Passit4Sure.4A Questions 4A Alcatel-Lucent Interior Routing Protocols and High Availability

Transcription

1 Passit4Sure.4A Questions Number: 4A0-101 Passing Score: 800 Time Limit: 120 min File Version: A0-101 Alcatel-Lucent Interior Routing Protocols and High Availability 1. I took the exam today and I have had approximately 85% of questions from this dump, Thanks 2. Some new questions thrown in. Some of the other?s are asked differently and have different answers. Just study all the explanations and you will be fine. 3. This VCE file is about 95% accurate. 4. There are 7 new questions that was not covered in this dumps. 5. Excellent VCE file.

2 Exam A QUESTION 1 Which of the following conditions will prevent an OSPF adjacency from reaching the full state? Choose three answers. A. MTU mismatch B. Incorrect subnet mask C. System interface not included in OSPF D. Area ID not the same E. Different metric set on each end of the link F. Router ID not defined Correct Answer: ABD /Reference: : QUESTION 2 Click the exhibit button.

3 The following command sequence is executed on router R2: On router R1, what router ID appears for router R2 directly after these commands are executed? A B C D Correct Answer: C /Reference:

4 : QUESTION 3 Which of the following statements regarding IS-IS Hello packets are true? Choose two answers. A. Different types of Hello packets are exchanged on point-to-point networks than on broadcast networks. B. L1/L2 Hello packets are exchanged on broadcast links. C. Different L1 and L2 Hello packets are exchanged on broadcast links. D. By default, Hello packets are sent every 5 seconds, and the timeout to declare a neighbor down is 15 seconds. Correct Answer: AC /Reference: appropriate. QUESTION 4 Which of the following types of network topologies are supported by IS-IS on the Alcatel-Lucent 7750 SR? Choose two answers. A. Non-broadcast B. Broadcast C. Point-to-multipoint D. Point-to-point Correct Answer: BD /Reference: right answer.

5 QUESTION 5 Click the exhibit button. What is the state of adjacency? A. Initializing B. Up C. Down

6 D. 2-Way Correct Answer: C /Reference: : QUESTION 6 When IS-IS elects a DIS, what is used as the tie breaker on an Alcatel-Lucent 7750 SR, if the priorities are the same? A. The system ID. B. The loopback address. C. The sequence number of the Hello packet. D. The device that first initiated communication becomes the DIS E. The highest interface MAC address. Correct Answer: E /Reference: : QUESTION 7 Two IS-IS L1/L2 routers are in the same area on the same Ethernet segment. How many adjacencies will be formed between them? A. None B. 1 C. 2 D. 3 E. 4 Correct Answer: C /Reference:

7 : QUESTION 8 In IS-IS, which of the following statements regarding an L1/L2 router is false? A. An L1/L2 router can have neighbors in different areas. B. An L1/L2 router calculates separate SPF trees for the Level 1 and Level 2 topology. C. An L1/L2 router advertises its L2 routes to its L1 neighbors. D. An L1/L2 router sets the ATT bit in L1 LSPs to identify itself as an L1 router. Correct Answer: D /Reference: true answer. QUESTION 9 How are IS-IS LSPs sent on point-to-point links? A. They are sent using multicast MAC addresses 0180:0200:0014. B. They are sent using multicast MAC addresses 0180:c200:0015. C. They are sent using a unicast address. D. None of the above. Correct Answer: C /Reference: : QUESTION 10 Given the NSAP address of , what area does the IS-IS router reside in? A B C D. 1234

8 E Correct Answer: B /Reference: valid. QUESTION 11 Which type of IS-IS router is summarization most likely to be configured on? A. L1 routers B. L2 routers C. L1/L2 routers D. L1 and L2 routers Correct Answer: C /Reference: rightful. QUESTION 12 A default route for a client is also known as the: A. Default path B. Default gateway C. Gateway path D. Proxy ARP Correct Answer: B /Reference: fine.

9 QUESTION 13 What is the default preference value for a static route in the Alcatel-Lucent 7750 SR router? A. 0 B. 5 C. 10 D. 15 Correct Answer: B /Reference: done. QUESTION 14 What command could be used to verify proper configuration of a static route in an Alcatel-Lucent 7750 SR router? A. Show route-table B. Show router routing-table C. Show router route-table D. Show static Correct Answer: C /Reference: ok. QUESTION 15 What address is used when RIPv2 uses multicast to send its updates? A B C D E. RIPv2 does not have support for multicast

10 Correct Answer: C /Reference: 100% fit answer. QUESTION 16 What is the metric and maximum routable value for RIP? A. Hop count and 16 B. Hop count and 15 C. Link cost and 15 D. Link cost and 16 Correct Answer: B /Reference: : QUESTION 17 What modes of authentication are supported for RIPv2 on the Alcatel-Lucent 7750 SR? A. RIPv2 supports basic and MD5 authentication only. B. RIPv2 supports password and MD5 authentication only. C. RIPv2 does not support authentication, password and MD5 authentication. D. RIPv2 does not support authentication. Correct Answer: C /Reference: : QUESTION 18

11 Which of the following is NOT a characteristic of RIPv1?: A. 30 second network updates B. Classless routing C. Broadcast advertisement D. Poison Reverse Correct Answer: B /Reference: : QUESTION 19 What is the default inbound metric for RIP on the Alcatel-Lucent 7750 SR? A. Whatever the advertised metric happens to be. B. A value of 1. C. This must be administratively set as there is no default value. D. A value of 15. Correct Answer: B /Reference: : QUESTION 20 Identify two attributes of Distance Vector Protocols: (Choose two) A. Use split horizon by default. B. Send information about directly connected links to neighbors at periodic intervals. C. Use holddown timers when topologies change to allow for convergence. D. Maintain multiple databases: neighbor, topology and routing. Correct Answer: AC

12 /Reference: : QUESTION 21 Choose the Distance Vector Protocols from the list below: A. OSPF B. RIPv1 C. RIPv2 D. IS-IS Correct Answer: BC /Reference: : QUESTION 22 What must be configured on the Alcatel-Lucent 7750 SR for RIP to advertise locally attached links? A. A policy statement within the router identifying what is to be advertised B. Access-lists denoting what is to be advertised C. Default metrics for each link D. A group and neighbor statement for each peer Correct Answer: A /Reference: : QUESTION 23 In an OSPF environment, what must a router receive after it sends out an update?

13 A. The router must receive an acknowledgment B. The router must receive a Hello C. The router must receive a new sequence number D. The router must receive a Link State Packet Correct Answer: A /Reference: : QUESTION 24 An OSPF router receives an update in which the sequence number, age, and checksum are the same as the entry already in the topological database. What action is taken by the router? A. The link state information is not populated in the database but is forwarded to all neighbors B. The link state information already in the database is overwritten and the age is reset C. The link state information is not populated in the database and an acknowledgement is sent D. The link state information is regarded as old and nothing is done. Correct Answer: C /Reference: : QUESTION 25 From the list below select the statements that describe the behavior of link state information aging. (Choose 2) A. The age for newly created link state information is set to 0 for OSPF and 1200 for IS-IS B. The age for newly created link state information is set to 1200 for OSPF and 0 for IS-IS C. The age is incremented or decremented as it is flooded from router to router and as it is held in the topological database. D. The age is incremented or decremented only as it is held in the topological database and not as it is flooded router to router. Correct Answer: AC

14 /Reference: : QUESTION 26 What are the three databases maintained by a Link State Protocol? A. Neighbor, adjacency, route table B. Neighbor, topology, forwarding C. Topology, routing, forwarding D. There are only two databases: adjacency and topology Correct Answer: B /Reference: : QUESTION 27 Which of the statements below best describes the pseudonode in an IS-IS network? A. The DIS creates a logical node to represent a group of routers on the same non-broadcast network; this node is the pseudonode B. The DIS creates a logical node to represent the topological database of the backbone network in an IS-IS network; this node is the pseudonode C. The DIS creates a logical node to represent a broadcast sub-network; this node is the pseudonode D. The DIS creates a logical node to represent the complete topology of an IS-IS area; this node is the pseudode Correct Answer: C /Reference: : QUESTION 28 What command will show the IS-IS neighbors, and their status on an Alcatel-Lucent 7750 SR?

15 A. Show isis neighbors B. Show router isis neighbors C. Show router isis adjacency D. Show isis adjacency Correct Answer: C /Reference: : QUESTION 29 What are the types of routers in an IS-IS topology? Choose all that apply. A. Level 0 B. Level 1 C. Level 2 D. Level 0/1 E. Level 1/2 Correct Answer: BCE /Reference: : QUESTION 30 What command allows analysis of the Dijkstra calculation on the Alcatel-Lucent 7750 SR?

16 A. There is no such calculation in IS-IS B. Show router isis database C. Show router isis dijykstra D. Show router isis spf Correct Answer: D /Reference: appropriate answer. QUESTION 31 What is the term used for the updates sent by IS-IS? A. Link State PDUs B. Link State Updates C. Link State Advertisements D. Intermediate System Update Packets Correct Answer: A /Reference: exact. QUESTION 32 What is the value of the protocol discriminator used to denote IS-IS protocol information? A. 89 B. 87 C. 85 D. 83 Correct Answer: D

17 /Reference: : QUESTION 33 What types of routers can an IS-IS L1 router form adjacencies with? Pick all that apply. A. L1 routers in the same area B. L1 routers in other areas C. L2 routers in the same area D. L2 routers in other areas E. L1/L2 router in the same area F. L1/L2 routers in other areas Correct Answer: AE /Reference: : QUESTION 34 What value should the AFI be set to for locally administered addressing? A. 1 B. 49 C. 83 D. 0 Correct Answer: B /Reference: : QUESTION 35 What are the similarities between OSPF and IS-IS? Choose two.

18 A. Metric is cost based B. Slow convergence C. Automatic summarization D. Support CIDR Correct Answer: AD /Reference: : QUESTION 36 Exhibit

19 The following IS-IS packets have been exchanged between 2 adjacent IS-IS routers. What type of adjacency will be formed? A. An L1 adjacency will be formed. B. An L1/L2 adjacency will formed C. L2 adjacency will be formed D. No adjacency will be formed Correct Answer: D /Reference:

20 : QUESTION 37 Which of the following best describes how IS-IS routers exchange updates on an Ethernet interface? A. IS-IS routers exchange updates by sending UDP packets to a multicast address. B. IS-IS routers exchange updates using IP multicast packets. C. IS-IS routers exchange updates using Ethernet multicast packets. D. IS-IS routers exchange updates by sending packets to the subnet broadcast address. Correct Answer: C /Reference: : QUESTION 38 What acts as the tie breaker on an Alcatel-Lucent 7750 SR if the priorities are the same when IS-IS is electing a DIS? A. The system ID B. The loopback address C. The sequence number of the hello packet D. The device that first initiated communication becomes the DIS Correct Answer: A /Reference: : QUESTION 39 How many bytes make up the system ID in an IS-IS NSAP address on the Alcatel-Lucent 7750 SR? A. 4 bytes B. 6 bytes C. 8 bytes D. Variably between 4 and 8 bytes

21 Correct Answer: B /Reference: : QUESTION 40 In an OSPF Hello packet what fields must match all neighbor routers on the segment? (Choose 3) A. Area ID B. Hello and Dead Intervals C. Stub flag D. DR and BDR addresses E. The list of neighbors Correct Answer: ABC /Reference: verified answer. QUESTION 41 What type of OSPF router generates a type 2 LSA? A. Area Border Router B. Autonomous System Boundary Router C. Designated Router D. All routers within an OSPF area. Correct Answer: C /Reference: appropriate.

22 QUESTION 42 What is the default priority value used for electing the DR on an Alcatel-Lucent 7750 SR running OSPF on an Ethernet? A. Priority of 0 B. Priority of 1 C. Priority of 64 D. Priority of 255 Correct Answer: B /Reference: : QUESTION 43 Which of the following statements regarding the election of the designated router (DR) by OSPF routers are true? (Choose two) A. The router with the lowest priority is the DR. B. The router with the highest priority is the DR. C. If priorities are the same, the DR is chosen based on the lowest RID. D. If priorities are the same, the DR is chosen based on the highest RID. Correct Answer: BD /Reference: : QUESTION 44 What are the types of networks supported on an Alcatel-Lucent 7750 SR for OSPF? (Choose 2) A. Broadcast B. Non-Broadcast Multi-Access C. Point-to-Point D. Point-to-Multipoint

23 Correct Answer: AC /Reference: : QUESTION 45 What are the ways the RID can be created on an Alcatel-Lucent 7750 SR router? (Choose three) A. From the last 32 bits of the chassis MAC address B. From the first 32 bits of the chassis MAC address C. The loopback IP address D. By using the command "config router ospf rid X.X.X.X" E. From the system IP address F. From the highest interface IP address Correct Answer: ADE /Reference: : QUESTION 46 Exhibit

24 Given the two configurations shown, identify the two incorrect statements below: (Choose two) A. Both routers will generate OSPF Hello packets. B. The system interface is missing in one configuration so OSPF will not operate correctly.

25 C. The interface type settings differ, but OSPF will still operate correctly. D. Metric values differ, but this does not prevent OSPF operation. Correct Answer: BC /Reference: : QUESTION 47 If a Router originates a type 1 router LSA with the E bit set what types of areas can it belong to? Select all that apply. A. Not So Stubby Area B. Stub Area C. Backbone Area D. Standard Area Correct Answer: ACD /Reference: : QUESTION 48 Which of the following statements regarding OSPF routing updates on a multi-access network segment is true? A. In multi-access networks, a DR and BDR are elected only if there are more than two routers connected to the network segment. B. In multi-access networks, a DR and BDR are elected only if the subnet masks on the router interfaces are less than /30 C. In multi-access networks, a DR and BDR are elected. To ensure resiliency, both the DR and BDR send link-state advertisements describing the network. D. In multi-access networks, a DR and BDR are elected. The DR sends link-state advertisements describing the network. Correct Answer: D /Reference: :

26 QUESTION 49 An OSPF ASBR must have at least one interface in the backbone area (area 0) A. True B. False Correct Answer: B /Reference: : QUESTION 50 The Alcatel-Lucent 7750 SR supports which two of the OSPF area types below? A. Not So Stubby Areas B. Level 1 Areas C. Stub Areas D. Partially Stubby Areas Correct Answer: AC /Reference: : QUESTION 51 What command will show the OSPF neighbors, and their status on the Alcatel-Lucent 7750 SR? A. Show ospf neighbors B. Show router ospf neighbors C. Show router ospf adjacency D. Show ospf adjacency Correct Answer: B

27 /Reference: : QUESTION 52 Which of the LSA types stay within an OSPF area and are not exported outside of the area? (Choose all that apply) A. Router LSA B. Network LSA C. Summary Network LSA D. Summary Router LSA Correct Answer: AB /Reference: : QUESTION 53 What is the source IP address in an OSPF update? A B C. The unicast IP address of the interface the update is being sent on. D. The system address of the router Correct Answer: C /Reference: suitable answer. QUESTION 54 NSSA LSA packets are what type within an NSSA area, and are converted to what other type at the ABR? A. They are type 7 within the area and are not modified at the ABR

28 B. They are type 5 within the area and converted to type 3 at the ABR C. They are type 5 within the area and are not modified at the ABR D. They are type 7 within the area and converted to type 5 at the ABR Correct Answer: D /Reference: great answer. QUESTION 55 What best describes the type of packets used by OSPF routers to exchange updates on a pointto-point link? A. IP packets sent to an IP multicast address. B. Ethernet frames sent to an Ethernet multicast address. C. IP packets sent to an IP unicast address. D. UDP packets sent to an IP multicast address. Correct Answer: A /Reference: elaborated. QUESTION 56 Graceful Restart is supported by what IGPs? A. RIPv1 and RIPv2 B. OSPF C. IS-IS D. BGP Correct Answer: BC /Reference:

29 : QUESTION 57 What are some of the characteristics of Alcatel-Lucent's implementation of non-stop routing? (Choose two) A. No protocol extensions required B. Only supported by OSPF and IS-IS C. Transparent to routing neighbors D. Uses Graceful Restart to inter-operate with other vendors Correct Answer: AC /Reference: : QUESTION 58 Click the exhibit button.

30 Two neighboring OSPF routers have exchanged the packets shown. What state is the adjacency in?

31 A. Full; both routers are exchanging Helios to maintain the adjacency. B. The adjacency is down. C. The adjacency is in exstart state. D. The adjacency is in the exchange state. Correct Answer: C /Reference: : QUESTION 59 When an OSPF adjacency is stuck in the "ExchStart" state, what is the most likely cause? A. The MTU does not match on both interfaces B. OSPF is not enabled on one of the routers C. The Router ID is the same on both routers D. A OSPF Hello has not been received from the neighbor Correct Answer: A /Reference: : QUESTION 60 Select the answer below that correctly lists the 5 different OSPF packet types. A. Hello, Link State Update, Link State Packet, Link State Acknowledgement, Database Descriptor B. Link State Update, Link State Refresh, Link State Acknowledgement, Database Descriptor, Notification C. Hello, Link State Refresh, Link State Update, Link State Acknowledgement, Link State Authentication D. Hello, Link State Update, Link State Request, Link State Acknowledgement, Database Descriptor Correct Answer: D

32 /Reference: : QUESTION 61 What causes an adjacency to change from "Init" to "Two Way"? A. When a Link State Update is received in response to a Link State Request B. When a router receives a Hello packet from a neighbor that contains its router id in the neighbor list C. When OSPF neighbors exchange Database Descriptor packets D. When a Link State Acknowledgement is received in response to a Link State Update Correct Answer: B /Reference: : QUESTION 62 When redistributing OSPF into RIP V2 what must be taken into consideration for the redistribution to take place? A. The metric must be set accordingly for RIP B. The subnet mask must be removed from the OSPF route C. You must divide the cost of the OSPF route by three D. The router must be configured as an ASBR Correct Answer: A /Reference: : QUESTION 63 What is wrong with the following filter configuration from an Alcatel-Lucent 7750 SR? RTR-B# configure filter RTR-B>config>filter# ip-filter 1 create RTR-B>config>filter>ip-filter$ entry 1 create

33 RTR-B>config>filter>ip-filter>entry$ match src-ip /16 RTR-B>config>filter>ip-filter>entry# action drop RTR-B# configure router interface tortr-a RTR-B>config>router>if# egress RTR-B>config>router>if>egress# filter ip 1 A. There is nothing wrong with this filter B. The filter should be applied to the ingress and not the egress. C. The mask cannot be a "/" value, it must be in dotted decimal. D. All traffic is being blocked Correct Answer: D /Reference: : QUESTION 64 When configuring a filter, where should the most explicit entries be placed? A. At the bottom B. In the middle C. At the top D. It does not matter where they are placed. Correct Answer: C /Reference: : QUESTION 65 From the list below identify two matching criteria supported for IP filters on the Alcatel-Lucent 7750 SR: (Choose two) A. DSCP marking B. Class of Service Marking C. DSAP marking

34 D. ICMP type Correct Answer: AD /Reference: : QUESTION 66 What command is used on the Alcatel-Lucent 7750 SR to define the default action to be taken if a packet does not match any entry in an IP filter? A. config>filter# default-action XXX B. config>filter>ip-filter# default-action XXX C. config>filter# default-mode XXX D. config>filter>ip-filter# default-mode XXX Correct Answer: B /Reference: : QUESTION 67 What is another term to describe the default route for a client? A. Black hole B. Default gateway C. Gateway path D. Proxy ARP Correct Answer: B /Reference: :

35 QUESTION 68 Which of the following is not one of the MT topologies defined for IS-IS? A. IPv4 In-Band Management B. IPv6 Routing C. IPv4 Multicast Routing D. IPv6 Multicast Routing E. All of the above are MT topologies defined for IS-IS. Correct Answer: E /Reference: : QUESTION 69 Click the exhibit button

36 The /24 network is learned on router R1 via IS-IS Given the OSPF configuration shown, and assuming that the OSPF adjacency between routers R1 and R3 is up, why is the /24 route not in router R3's route table? (Choose two)

37 A. The route policy should be applied as in import policy B. The no-redistribute-external command is used on router R1 C. The route policy is incorrect. It should say "from protocol ISIS" rather than "from protocol direct". D. It is not possible to be an ASBR and an NSSA. The ASBR configuration should be removed. E. The interface between routers R1 and R3 needs to be in OSPF area 0 rather than OSPF area 1 because a backbone area must always exist. Correct Answer: BC /Reference: : QUESTION 70 Which of the following best describes the actions after an IS-IS router receives on a broadcast interface, a newer LSP than the one in its database? A. The router sends a copy of the LSP from its database to its neighbor B. The router updates its database with the LSP and floods a copy to its other neighbors. C. The router updates its database with the LSP, acknowledges the LSP with a PSNP and floods a copy to its other neighbors. D. The router updates its database with the LSP and acknowledges it with a PSNP. Correct Answer: B /Reference: : QUESTION 71 Refer to the exhibit.

38 Assume that OSPFv3 is properly configured on all routers and that R4 advertises its system prefix into Area 0. Which of the following statements best describes how R5 learns R4's IPv6 system prefix? A. With a Router LSA originated by R1

39 B. With a Router LSA originated by R5 C. With a Router LSA originated by R4 D. With an Inter-Area Prefix LSA originated by R1 E. With an Inter-Area Prefix LSA originated by R5 F. With an Inter-Area Prefix LSA originated by R4 Correct Answer: D /Reference: : QUESTION 72 Click the exhibit button.

40 is a loopback interface on router R2 and is distributed to OSPF area 0, but the ping fails from router R3. Which of the following is a possible solution to the problem?

41 A. Add the "originate-default-route" option in the NSSA area configuration on router R3 B. Add the "summaries" option to the NSSA area configuration on router R1 C. Make a static route on router R1 to D. Make a default route on router R2 Correct Answer: B /Reference: : QUESTION 73 Which of the statements about the output in the exhibit is FALSE?

42 A. The system interface is configured with IPv6 address 2001DB8 1:100:1/128 B. All interfaces are configured for IPv4 and IPv6. C. Interface "tor2" is configured with a globally routed IPv6 address. D. Interface "tor3" is not configured for IPv6 with a global IPv6 address. Correct Answer: B

43 /Reference: : QUESTION 74 Click the exhibit button. Given the diagram in the exhibit, what would be the correct static route configuration on the router on the right, if it is an Alcatel-Lucent 7750 SR? A. config> static-route /0 next-hop B. config>router> static-route next-hop C. config>router> static-route /0 next-hop D. config>router> static-route /0 next-hop Correct Answer: D /Reference: :

44 QUESTION 75 Which of the following statements regarding link state protocols are true? (Choose two) A. When a router receives updates from its neighbors, it adds them to its link state database, performs an SPF computation, and sends the results to its neighbors. B. An SPF computation is done by each router to determine the best path to destination networks. All the best paths determined by the SPF calculation will be seen in the route table. C. Each router constructs its own link state database with updates received from neighbors. D. An SPF computation is done by each router to determine the best path to destination networks. All the best paths determined by the SPF calculation will be offered to the route table manager. Correct Answer: CD /Reference: : QUESTION 76 Which of the following OSPFv3 LSAs have an AS scope? A. Link Local LSA B. Router LSA C. Network LSA D. Inter-Area Router LSA E. Intra-Area Prefix LSA F. None of the above LSAs have an AS scope. Correct Answer: F /Reference: : QUESTION 77 An operator configures an Alcatel-Lucent 7750 SR with a loopback interface and IPv6 address. The operator then configures a routing policy to redistribute the loopback prefix into OSPFv3. What type of LSA is used to advertise the route to other OSPFv3 routers in the same area? A. Router LSA

45 B. AS External LSA C. Intra-Area Prefix LSA D. Inter-Area Prefix LSA E. Network LSA F. None of the statements are correct. Correct Answer: B /Reference: : QUESTION 78 Click the exhibit button. Which of the following statements best describes the format of data traffic sent from the PC to the server? A. The source IP address will be the address of the PC, and the destination IP address will be the system IP address of router R1; the source MAC address will be the MAC address of the PC, and the destination MAC address will be the MAC address of the router R1 port connected to the PC. B. The source IP address will be the address of the PC, and the destination IP address will be the IP address of the router R1 port connected to the PC, the source MAC address will be the MAC address of the PC, and the destination MAC address will be the MAC address of the router R1 port connected to the PC. C. The source IP address will be the address of the PC, and the destination IP address will be the IP address of the server, the source MAC address will be the MAC address of the PC, and the destination MAC address will be the MAC address of the server. D. The source IP address will be the address of the PC, and the destination IP address will be the IP address of the server; the source MAC address will be the MAC address of the PC, and the destination MAC address will be the MAC address of the router R1 port connected to the PC. Correct Answer: D /Reference: : QUESTION 79 If two routers running IS-IS protocols are exchanging Hello packets with different authentication types, which of the following statements regarding the adjacency state established between them is true? A. Different authentication types are not possible because IS-IS only supports password authentication.

46 B. An adjacency will not be formed C. The two routers negotiate the authentication type and then reach the up state. D. Only an L2 adjacency will form, as long as both routers are L2 capable. Correct Answer: B /Reference: : QUESTION 80 Which of the following is optional when configuring IS-IS on the Alcatel-Lucent 7750 SR? A. Configuring IS-IS interfaces B. Enabling IS-IS C. Configuring level capabilities D. Specifying an area address Correct Answer: C /Reference: : QUESTION 81 Which of the following TLV fields is included in an IS-IS Hello packet? A. Area addresses TLVIntermediate system neighbors TLV Authentication information TLV B. Intermediate system neighbors TLV Area addresses TLV LSP entries TLV C. The IP internal reachability information TLV Area Addresses TLV Authentication Information TLV D. The IP external reachability information TLV Area addresses TLV Intermediate system neighbors TLV Correct Answer: A /Reference:

47 sophisticated answer. QUESTION 82 What is the CIDR summary for the block of networks from /24 to /24? A /20 B /21 C /21 D /20 Correct Answer: A /Reference: : QUESTION 83 The exhibit shows a route to 2001:DB8:1:200::/56 in the IPv6 route table. How did the route get into the route table?

48 A. Configure router ipv6 static-route 2001:DB8:1:200::/56 next-hop FE80::225:BAFF:FE30:94E3 B. Configure router ipv6 static-route 2001:DB8:1:200::/56 next-hop FE80::225:BAFF:FE30:94E3- tor2 C. Configure router static-route 2001:DB8:1:200::/56 next-hop FE80::225:BAFF:FE30:94E3 D. Configure router static-route 2001:DB8:1:200::/56 next-hop FE80::225:BAFF:FE30:94E3-toR2 E. The route was learned through a dynamic routing protocol. Correct Answer: D /Reference: : QUESTION 84 Click the exhibit button.

49

50 A static route has been configured on router R1 to reach the PC at However, as shown in the exhibit, the ping fails. What is the most likely cause of the problem? A. Router R2 does not have a route to the system address of router R1 and therefore cannot respond to the ping. B. There is no default route configured on the PC. C. Router R2 does not have a route configured to the PC. D. Router R1 needs to be configured with a default route. Correct Answer: B /Reference: : QUESTION 85 Which of the statements below best describes the operation of the IPv6 anycast address? A. A packet with a destination anycast address is sent to all nodes on the local link. B. A packet with a destination anycast address is sent to all nodes on the local network. C. A packet with a destination anycast address is sent to all nodes that have joined the anycast group. D. A packet with a destination anycast address is sent to the nearest node that is assigned the anycast address E. A packet with a destination anycast address is sent to all nodes that are assigned the anycast address. Correct Answer: D /Reference: : QUESTION 86 Refer to the exhibit below.

51 R1 distributes its loopbacks into IS-IS and globally routed addresses are configured as shown. How many routes will R4 have in its IPv6 route table? A. 1 B. 2 C. 3 D. 4 E. 6 F. 7 Correct Answer: C /Reference: : QUESTION 87 Which three IS-IS PDU types are used for database synchronization? A. Hellos, CSNPs, PSNPs B. LSPs. Hellos, CSNPs C. LSPs, PSNPs, Hellos

52 D. LSPs, CSNPs, PSNPs Correct Answer: D /Reference: : QUESTION 88 Which of the following statements regarding IS-IS DIS is false? A. L1 and L2 routers elect separate DIS's. B. DIS uses multicast address 0180x200:0015 to communicate with other routers on the broadcast network. C. If a new router starts up in a LAN and has a higher interface priority, the new router preempts the original DIS and becomes the DIS. D. In broadcast multi-access networks, such as Ethernet, a single router is elected as the DIS. There is no backup DIS Correct Answer: B /Reference: : QUESTION 89 Which of the following describes the method used to resolve an IPv6 address to a MAC address? A. IPv6 uses the Address Resolution Protocol to resolve the address to a MAC address. B. A Neighbor Discovery message is sent to the broadcast MAC address. The host with the IPv6 address responds with a Neighbor Advertisement message. C. A Neighbor Discovery message is sent to the solicited-node multicast address. The host with the IPv6 address responds with a Neighbor Advertisement message. D. A Neighbor Discovery message is sent to the anycast address for the LAN. The host with the IPv6 address responds with a Neighbor Advertisement message. E. IPv6 addresses do not need to be resolved to a MAC address. Correct Answer: C /Reference:

53 : QUESTION 90 A router sets the E bit in the flags of its Type 1 LSA. What does this indicate? A. The router is an ABR. B. The router is an ASBR. C. The router is at the end of a virtual link. D. The router's interface is in a stub area. Correct Answer: B /Reference: : QUESTION 91 Click the exhibit button. Router 2 advertises the network /24 to router R1 via IS-IS. How can router R1 ensure that it discards the route? A. Use a prefix list on router R1 to discard all ingress IS-IS routes. B. Use an export policy and prefix list on router R1. C. Use an import policy and a prefix list on router R1. D. This is not possible because IS-IS cannot use import policies. Correct Answer: D

54 /Reference: : QUESTION 92 In IS-IS database synchronization, each router compares each LSP described in the received CSNPs with the LSPs in its own database. Which of the following actions is taken if the database contains a newer copy of the LSP? A. The router sends a copy of the LSP from its database to its neighbor B. The router sends a PSNP to its neighbor describing the LSP in its database. C. The router updates its database with the LSP and floods a copy to its other neighbors. D. The router sends a PSNP to its neighbor to request the LSP. Correct Answer: A /Reference: : QUESTION 93 What is the primary purpose of classless interdomain routing (CIDR)? A. To support classful routing protocols. B. To allow IP routes to be defined using any number of bits for the network portion of the address. C. To allow interdomain routing between an IGP and EGP such as OSPF and BGP. D. To simplify the allocation of IP address space by defining a fixed size for the network portion of the address for each of the address classes. Correct Answer: B /Reference: : QUESTION 94 What is the source IP address in an OSPF update? A

55 B C. The unicast IP address of the interface the update is sent on D. The system address of the router. Correct Answer: C /Reference: : QUESTION 95 How are LSPs acknowledged on IS-IS broadcast links? A. The LSP is acknowledged by sending a PSNP PDU. B. The LSP is acknowledged by sending an LSP PDU. C. The LSP is acknowledged by sending a Hello PDU. D. LSP are not acknowledged on broadcast links. The DIS sends periodic CSNPs to maintain database synchronization Correct Answer: D /Reference: : QUESTION 96 Which of the following are types of routers in an IS-IS topology? Choose three answers A. Level 0 B. Level 1

56 C. Level 2 D. Level 0/1 E. Level 1/2 Correct Answer: BCE /Reference: given answer is correct. QUESTION 97 Click the exhibit button.

57 In the topology shown, router R1 is an ASBR configured to export external routes to OSPF. Assuming that there are no stub networks, which of the following statements regarding Type 4 LSA generation is true? A. Router R1 generates a Type 4 LSA that is flooded to areas 0, 1, and 2. B. Router R3 generates a Type 4 LSA that is flooded to areas 0, 1, and 2. C. Router R3 generates a Type 4 LSA that is flooded to areas 0 and 2. D. Router R3 generates a Type 4 LSA that is flooded to area 0, and router R6 generates a Type 4 LSA that is flooded to area 2. Correct Answer: D

58 /Reference: : QUESTION 98 Which of the following LSA types stay within an OSPF area, and are not flooded outside of the area? Choose two answers. A. Router LSA B. Network LSAC Summary network LSA C. Summary router LSA D. Type 5 (AS external) LSAs Correct Answer: AB /Reference: : QUESTION 99 Which one of the following is a valid IPv6 multicast address? A. ff00::1:2 B. fe80::216:4dff:fe13:5cae C. ::ffff:0: D. 2001:db8::30a:216:4dff:fe13:5cae E. fd01:2234:5678::1 Correct Answer: A /Reference: : QUESTION 100 Click the exhibit button.

59 What is the command to configure a static route on the 7750 service router R1 to reach the network behind router R2? A. configure router static-route /24 next-hop B. configure router static-route /24 next-hop C. configure router static-route /24 next-hop D. configure router static-route /24 next-hop Correct Answer: A /Reference: : QUESTION 101 Click the exhibit button.

60 Router R2 advertises the network /24 to router R1 via RIP. How can router R1 ensure that it discards the route? A. Use an import policy and a prefix list on router R1 to reject this route. B. Use a prefix list on router R1 to discard all ingress IS-IS routes. C. Use an export policy and prefix list on router R1 to reject this route. D. This is not possible because RIP cannot use import policies. Correct Answer: A /Reference: : QUESTION 102 Click the exhibit button.

61 Given the topology and the route-tables shown, which of the following is most likely to be the configuration on router R1?

62

63

64

65 A. Option A B. Option B C. Option C D. Option D Correct Answer: D /Reference: : QUESTION 103 A router is configured with the command "configure router ecmp 4". There are two best paths to a given destination with an equal cost in the IGP. Which of the following best describes the handling of traffic to this destination? A. The router installs two routes for the destination with two different next hops. A hashing algorithm is used to distribute traffic over the two paths. B. The router installs two routes for the destination with two different next hops. Traffic is evenly distributed over the two paths. C. The router installs four routes for the destination with four different next hops. A hashing algorithm is used to distribute traffic over the four paths. D. The router installs four routes for the destination with four different next hops. Traffic is evenly distributed over the four paths. E. The router installs one route for the destination. Traffic is evenly distributed over the two paths. Correct Answer: A /Reference: : QUESTION 104 Refer to the exhibit below. IS-IS IPv6 routing is configured in the network with globally routed addresses as shown. How many routes will R4 have in its IPv6 route table?

66 A. 1 B. 2 C. 3 D. 4 E. 6 F. 7 Correct Answer: B /Reference: : QUESTION 105 Click the exhibit button. Assuming point-to-point links, which of the following statements is true?

67 A. Routers R1 and R2 are L2 routers. Routers R3 and R4 are L1/L2 routers B. Routers R1, R2, and R4 are L1/L2 routers. Router R3 is an L1 router, C. Routers R1, R2, and R3 are L2 routers. Router R4 is an L1 router, D. Routers R1 and R2 are L1/L2 routers. Routers R3 and R4 are L1 routers Correct Answer: D /Reference: :

68 QUESTION 106 Click the exhibit button. Assuming that the router ID of the router shown is , which of the following statements regarding the CLI output is true? A. The router with router ID is an ASBR. B. The router with router ID is an ASBR. C. The router with router ID originated the AS summary LSA in its own area. D. The router with router ID is in the same area as the router with router ID Correct Answer: A /Reference: :

69 QUESTION 107 Which of the following statements regarding OSPF routing updates on a point-to-point link is true? A. On a point-to-point link, there is no need for a DR and BDR election; all routing updates are sent to B. On a point-to-point link, a DR and BDR are elected. The DR sends link-state advertisements describing the network. C. On a point-to-point link, a DR and BDR are elected. To ensure resiliency, both the DR and BDR send link-state advertisements describing the network. D. On a point-to-point link, there is no need for a DR and BDR election. All routing updates are sent to the unicast address of the neighbor's interface. Correct Answer: A /Reference: : QUESTION 108 When IS-IS is electing a DIS, what is used as the tie breaker on an Alcatel-Lucent 7750 SR, if the priorities are the same? A. The system ID B. The loopback address C. The sequence number of the Hello packet D. The device that first initiated communication becomes the DIS E. The highest interface MAC address Correct Answer: E /Reference: : QUESTION 109 Which of the following statements are true? Choose two answers. A. Route redistribution is only needed if Internet access is a requirement. B. Route filtering is the process of attaching data path filters to router interfaces. C. Route filtering involves deciding whether to permit or deny certain routing updates from being accepted into, or distributed out of, the route-selection process.

70 D. Redistribution is needed for exchanging routes from one routing protocol to another. E. OSPF routers that are redistributing routes must be configured as ABRs. Correct Answer: CD /Reference: : QUESTION 110 Refer to the exhibit below. The routers have an established IS-IS L2 adjacency on which IPv4 system addresses are exchanged. An operator successfully configures multi-topology IS-IS routing so that the IPv6 system addresses are also exchanged between routers. Which of the following statements best describes the number of IS-IS adjacencies and the number of LSPs in the LSDB of R1 AFTER IPv6 has been configured? A. R1 has one IS-IS adjacency and one LSP. B. R1 has one IS-IS adjacency and two LSPs. C. R1 has one IS-IS adjacency and four LSPs. D. R1 has two IS-IS-adjacencies and two LSPs E. R1 has two IS-IS adjacencies and four LSPs

71 Correct Answer: B /Reference: : QUESTION 111 Click the exhibit button. If router R2 redistributes the IS-IS route to /24 into OSPF, router R3 will receive two routes to /24. What will be the preference of these two routes? Assume that all IS-IS routers are L1/L2 capable and are in the same area. Choose two answers. A. The OSPF internal preference B. The IS-IS Level 1 internal preference C. The IS-IS Level 2 internal preference D. The OSPF external preference E. The IS-IS Level 2 external preference F. The IS-IS Level 1 external preference Correct Answer: BD

72 /Reference: : QUESTION 112 Static routing is to be used in a network between a corporate head office with many connected networks, and a branch office with one connection to the head office. Which of the following best describes the likely configuration? A. The corporate head office router should have a default route and the branch site should have a more specific static route B. The corporate head office router and the branch office router should both have specific static routes. C. The corporate head office router and the branch router should both have default routes. D. The corporate head office router should have a specific static route and the branch office router should have a default route. Correct Answer: D /Reference: : QUESTION 113 If routers R1 and R2 have a Level 1 and Level 2 IS-IS adjacency, which of the following statements are true? Choose two answers. A. Routers R1 and R2 are in different areas, B. Routers R1 and R2 are in the same area. C. Routers R1 and R2 will send a Level 1 Hello PDU and Level 2 Hello PDU, if the interface type between them is point-to-point. D. Routers R1 and R2 will send a Level 1 Hello PDU and Level 2 Hello PDU, if the interface type between them is broadcast. E. Routers R1 and R2 will send a Level 1/2 Hello PDU, if the interface type between them is broadcast. Correct Answer: BD /Reference: : QUESTION 114

73 Which of the following TLV fields is included in an IS-IS Hello packet on broadcast interfaces but not on point-to-point interfaces? A. The area addresses TLV B. The intermediate system neighbors TLV C. The IP interface address TLV D. The authentication information TLV Correct Answer: B /Reference: : QUESTION 115 Click the exhibit button. What is the state of adjacency?

74 A. Exchange B. Up C. Down D. 2-Way Correct Answer: C

75 /Reference: : QUESTION 116 How can a router ID be created on an Alcatel-Lucent 7750 SR router? Choose three answers A. From the least significant 32 bits of the chassis MAC address. B. From the most significant 32 bits of the chassis MAC address. C. From the loopback IP address. D. By using the command "config router router-id X.X.X.X" E. From the system IP address. F. From the highest interface IP address. Correct Answer: ADE /Reference: : QUESTION 117 Two IS-IS L1/L2 routers are in the same area on the same Ethernet segment. One of the routers is the DIS. How many adjacencies will be formed between them? A. None B. 1 C. 2 D. 3 E. 4 Correct Answer: C /Reference: : QUESTION 118 An interface is configured on a router for OSPF but the command "show router ospf neighbor" does not show any neighbors. Which of the following is NOT a possible cause?

76 A. An OSPF database description packet has not been received from the neighbor. B. The interface facing the neighbor is down. C. The interface is included in a different area than the neighbor router. D. The router has not received a valid OSPF Hello packet from its neighbor. Correct Answer: A /Reference: : QUESTION 119 An interface has a MAC address of d-16-b5-3d. What link-local address will be assigned to this interface? A. fe80::2416:4dff:fe16:b53d B. fe80::2616:4dff:fe16:b53d C. ff80::2416:4dff:fe 16:b53d D. ff80::2616:4dff:fe 16:b53d E. fd80::2416:4dff:fe16:b53d Correct Answer: B /Reference: : QUESTION 120 Click the exhibit button.

77 A static route is created on router R1 using the command "static-route /0 next-hop ". What command can be used to test the static route on an Alcatel-Lucent 7750 SR? A. ping static B. ping static /0 C. ping D. ping Correct Answer: C /Reference: : QUESTION 121 Which of the following statements best describes the function of an OSPF Type 4 LSA?

78 A. A Type 4 LSA is originated by an ABR to describe a route to an ASBR to routers outside the area. B. A Type 4 LSA is originated by an ASBR to describe a route to itself to routers outside the area. C. A Type 4 LSA is originated by an ABR that is connected to a stub area. The LSA is injected into the backbone area to provide routing information. D. A Type 4 LSA is originated by an ABR that is connected to a stub area. The LSA is injected into the stub area to provide routing information. Correct Answer: A /Reference: : QUESTION 122 Which of the following statements concerning OSPFv3 is false? A. MD5 Authentication is not supported. B. Router LSAs do not carry IPv6 prefix information C. NSSA is not supported in OSPFv3. D. OSPFv3 uses a 32-bit router ID. Correct Answer: C /Reference: : QUESTION 123 A router receives an OSPF database description packet from a neighbor that references an LSA, which is already in the router's LSDB. The sequence number in the DBD packet is lower than the sequence number of the LSA in the LSDB. What action does the router take? A. The router sends a link-state update to its neighbor. B. The router sends a link-state acknowledgement to its neighbor. C. The router updates the information in its LSDB with the information received from its neighbor. D. The router sends a link-state request to its neighbor. E. The router takes no action.

79 Correct Answer: A /Reference: true. QUESTION 124 On which type of IS-IS router is summarization most likely to be configured? A. L1 routers B. L2 routers C. L1/L2 routers D. L1 and L2 routers Correct Answer: C /Reference: : QUESTION 125 Which part of the NSAP address is used to indicate to the end system that a packet is to be processed by the router itself? A. AFI B. IDI C. HO-DSP D. NSEL Correct Answer: D /Reference: : QUESTION 126

80 When multiple routing protocols offer a route for the same prefix, what part of the router is in charge of deciding which route to make active? A. The routing information base (RIB). B. The routing table manager (RTM). C. The equal cost multipath configuration (ECMP). D. The forwarding information base (FIB). E. The link state database (LSDB). Correct Answer: B /Reference: : QUESTION 127 Which of the following is FALSE regarding link-state protocols? A. Each router constructs its own link-state database with updates received from neighbors. B. When a router performs an SPF computation, it sends the results to its neighbors. C. An SPF computation is done by each router to determine the best path to destination prefixes D. The link-state database is identical for all routers in a single area routing domain. Correct Answer: B /Reference: : QUESTION 128 Click on the exhibit.

81 A static route has been configured on router R1 to reach the PC at What might be causing the ping to fail? A. Router R2 needs a static route to the PC. B. Router R2 needs a default to router R1. C. Router R1 needs a default route to router R2. D. The static route should use a next-hop of Correct Answer: D /Reference:

82 : QUESTION 129 A static route needs to be configured with a next-hop that is NOT directly connected to the router. Which of the following must be TRUE? A. The router must also have an active static route to the next-hop specified in the static route command. B. The system address of the next-hop router must be included in the static route command. C. The command option "indirect" must be used in the static-route command. D. The system address of the router connected to the destination must be included in the static route command Correct Answer: C /Reference: : QUESTION 130 Click on the exhibit.

83 Router R1 distributes its globally routed address and its loopbacks into IS-IS. Routers R2 and R4 have their globally routed addresses in IS-IS. How many routes will router R4 have in its IPv6 route table? A. 2 B. 3 C. 4 D. 5 E. 6 F. 7 Correct Answer: E /Reference:

84 : QUESTION 131 Click on the exhibit.

85

86 All ports in the network are operationally up and have a speed of 1Gbps. Which of the following is TRUE? A. Data traffic from network /24 to /24 will be forwarded through router R2. B. Data traffic from network /24 to /24 will be forwarded through router R2. C. The system interface of routers R1 and R3 must be included into OSPF for traffic to flow between the /24 and /24 networks. D. The OSPF adjacency between router R1 and router R3 is operationally down. Correct Answer: B /Reference: : QUESTION 132 Which of the following about the OSPF BDR is TRUE? A. A BDR is always required on point-to-point links. B. The second highest RID is always the BDR. C. The BDR only listens for link-state updates sent to D. The BDR always acknowledges link-state updates from the DR Correct Answer: D /Reference: : QUESTION 133 What is the replacement for ARP in IPv6? A. The use of Broadcast messages in combination with Neighbor Advertisement messages. B. The use of Anycast addresses in combination with Neighbor Advertisement messages. C. The use of Solicited-node multicast addresses in combination with Neighbor Advertisement messages. D. The use of Anycast addresses in combination with Link-Local Advertisement messages.

87 Correct Answer: C /Reference: : QUESTION 134 Click on the exhibit.

88 Examine the physical topology of the IS-IS network, the metrics of the links and the levels of the routers. All routers have a system address included in IS-IS. Which of the following describes the route that router R4 will use to reach the system address of router R6? A. Router R4 will have a route to router R6's system address with router R2 as the next-hop. B. Router R4 will have a default route with router R2 as the next-hop. C. Router R4 will have a default route with router R3 as the next-hop. D. Router R4 will not have a route that can be used to reach the system address of router R6. Correct Answer: D /Reference: : QUESTION 135 Click on the exhibit.

89 The numbers beside the links are the metrics for that link. Given the diagram, what path will traffic follow from router R1 to router R7, and from router R7 to router R1, if IS-IS is the routing protocol? A. Router R1 to router R7 will follow (R1-R2-R4-R6-R7). Router R7 to R1 will follow (R7-R6-R4-R2- R1) B. Router R1 to router R7 will follow (R1-R2-R4-R6-R7). Router R7 to R1 will follow (R7-R6-R5-R3- R1) C. Router R1 to router R7 will follow (R1-R3-R5-R6-R7). Router R7 to R1 will follow (R7-R6-R4-R2- R1) D. Router R1 to router R7 will follow (R1-R3-R5-R6-R7). Router R7 to R1 will follow (R7-R6-R5-R3- R1) Correct Answer: C

90 /Reference: : QUESTION 136 Click on the exhibit.

91 Based on the topology shown and the route tables of routers R3 and R4, which of the following is correct?

92 A. There is no route leaking configured on router R1 or router R2. B. Route leaking is configured on router R1 but not on router R2. C. Route leaking is configured on router R2 but not on router R1. D. Route leaking is configured on both router R1 and router R2. Correct Answer: D /Reference: : QUESTION 137 Click on the exhibit. The route table on router R2 shows the system address of router R5 but it does not show any of the interfaces from the non-ospf area. What may be causing this? A. 'asbr' is missing from router R1's configuration. B. Router R1 needs to have an export policy added to it. C. Router R5 does not have an export policy for these prefixes. D. Router R1 needs to have an import policy added to it.

93 Correct Answer: C /Reference: : QUESTION 138 Which LSA type is not found in point-to-point only OSPF networks? A. Type 1 Router LSA B. Type 2 Network LS A C. Type 3 Summary LSA D. Type 5 External LSA Correct Answer: B /Reference: : QUESTION 139 Click on the exhibit.

94 In the topology shown, router R1 is an ASBR configured to export external routes to OSPF. There are no stub or NSSA areas. Which of the following regarding LSAs is TRUE? A. Router R3 will advertise Type 7 LSAs to Area 0 and Area 2. B. Only routers R2 and R3 receive Type 5 LSAs advertised by router R1. C. Router R2 will receive Type 5 and Type 7 LSAs. D. Router R7 will receive Type 5 LSAs advertised by router R1. Correct Answer: D

95 /Reference: : QUESTION 140 Click on the exhibit. What value would be expected in the state field? A. Exchange B. Up

96 C. Down D. 2-Way Correct Answer: C /Reference: : QUESTION 141 Which OSPFv3 LSA advertises an ASBR? A. AS Summary B. Inter-Area Network C. Inter-Area Router D. Intra-Area Prefix Correct Answer: C /Reference: : QUESTION 142 Which of the following best describes the actions taken by an IS-IS router after it receives an LSP on a broadcast interface that is newer than the one in its database? A. The router sends a copy of the LSP from its database to its neighbor. B. The router updates its database with the LSP and floods a copy to its other neighbors. C. The router updates its database with the LSP, acknowledges the LSP with a PSNP and floods a copy to its other neighbors. D. The router updates its database with the LSP and acknowledges it with a PSNP. Correct Answer: B /Reference:

97 : QUESTION 143 Click on the exhibit. Given the contents of the Router LSA, which of the following best describes the local topology of the router?

98 A. The router has a system interface, two point-to-point interfaces and one broadcast interface. B. The router has a system interface, two passive interfaces, two point-to-point interfaces and one broadcast interface. C. The router has a system interface, two point-to-point interfaces and one virtual link. D. The router has a system interface, two passive interfaces, two point-to-point interfaces and one virtual link. Correct Answer: A /Reference: : QUESTION 144 Click on the exhibit.

99

100 Router R2 learns the networks shown from IS-IS. Router R2 is configured to redistribute routes from IS-IS to OSPF as shown. Assume the OSPF and IS-IS adjacencies are operational. How many OSPF Type 5 LSAs will router R1 receive from router R2? A. 0 B. 1 C. 2 D. 3 E. 4 Correct Answer: D /Reference: : QUESTION 145 A new router is added to a broadcast network. What is used by IS-IS as the tie breaker for selecting the DIS if the priorities are the same? A. The router with the highest system ID. B. The router with the highest loopback address. C. The Hello packet with the highest sequence number. D. The existing DIS remains the DIS. E. The router with the highest interface MAC address. Correct Answer: E /Reference: : QUESTION 146 What type of LSA is used to flood information about prefixes from one OSPF area to other attached areas? A. Type 1

101 B. Type 3 C. Type 4 D. Type 7 Correct Answer: B /Reference: : QUESTION 147 Click on the exhibit.

102 Router R5 is advertising the three loopbacks prefixes shown in OSPFv3. The following command is executed on router R1: R1# configure router ospf3 area 0 arearange FD00:11:11:5000:764. Which of the following is TRUE regarding the OSPFv3 LSDB on R6? A. Router R6 will have a single Router LSA that describes the summary prefix.

103 B. Router R6 will have three Router LSAs - one to describe each loopback prefix. C. Router R6 will have a single Inter-Area Prefix LSA to describe the summary prefix. D. Router R6 will have three Inter-Area Prefix LSAs - one to describe each loopback prefix. E. Router R6 will not have any LSAs to describe the loopback prefix or the summarized prefix. Correct Answer: C /Reference: : QUESTION 148 Click on the exhibit.

104 Given the contents of the LSPs from routers R1 and R2, which of the following is TRUE? A. Router R1 summarizes the prefixes from router R3 as /16 and router R2 does not summarize the prefixes. B. Router R1 does not summarize the prefixes from routers R3 and R2 summarizes them as /16. C. Router R1 summarizes the prefixes from router R3 as /20 and router R2 does not summarize the prefixes. D. Router R1 does not summarize the prefixes from routers R3 and R2 summarizes them as /20.

105 E. Both routers R1 and R2 summarize the prefixes from R3 as /20. F. Neither router R1 nor router R2 summarizes the prefixes from router R3. Correct Answer: E /Reference: : QUESTION 149 Click on the exhibit. What type of OSPFv3 LSA is shown? A. Router LSA B. Network LSA C. Intra-Area Prefix LSA D. Link LSA Correct Answer: A

106 /Reference: : QUESTION 150 Static routing is to be used in a network between a corporate head office with many connected networks and a branch office with one connection to the head office. Which of the following is the most likely configuration on the head office and branch office routers? A. The head office has a default route and the branch office has a specific static route. B. The head office and the branch offices both have specific static routes. C. The head office and the branch office both have default routes. D. The head office has a specific static route and the branch office has a default route Correct Answer: D /Reference: : QUESTION 151 Which of the following about IS-IS level hierarchies is FALSE? A. Level 2 routers interconnect the Level 1 areas. B. There must be a contiguous Level 2 backbone to enable routing throughout the entire network. C. Level 1 routers send packets to the nearest L1/L2 router if the destination is in a different area D. Level 2 routers store the Level 1 and Level 2 topology information in a single database. Correct Answer: D /Reference: : QUESTION 152 To configure 6over4 tunneling, where must indirect static routes be configured?

107 A. On the CEs only. B. On the PEs only. C. On only the branch office CE. D. On both the CEs and PEs. Correct Answer: B /Reference: : QUESTION 153 Which function or component of the Alcatel-Lucent 7750 SR is in charge of supporting dynamic routing protocols and constructing the routing table? A. IOM B. CPM C. FIB D. SPF Correct Answer: B /Reference: : QUESTION 154 Click on the exhibit.

108 Router R4 is being added to the network and it is connected to a non-ospf domain. Which area type should be used for Area 1 to allow the external routes to be advertised into Area 0? A. Backbone B. NSSA C. Stub D. Totally stubby Correct Answer: B /Reference: : QUESTION 155 Which OSPFv3 LSA type is similar in function to the OSPFv2 Type 4 LSA? A. Link B. Intra-Area Prefix C. Inter-Area Prefix D. Inter-Area Router

109 Correct Answer: D /Reference: : QUESTION 156 An OSPF adjacency is stuck in the exstart state. What is the most likely cause? A. The MTU does not match on both interfaces. B. OSPF is not enabled on one of the routers. C. The router ID is the same on both routers. D. An OSPF Hello has not been received from the neighbor. E. The interfaces are configured as point-to-point on one side and broadcast on the other. Correct Answer: A /Reference: : QUESTION 157 Which type of OSPF LSA has the following characteristics: It is flooded only within the area it originates from and can be originated by any OSPF router within the area (including non-dr routers). A. Type 1 Router LSA B. Type 2 Network LSA C. Type 3 Summary LSA D. Type 4 ASBR LSA Correct Answer: A /Reference: :

110 QUESTION 158 Click on the exhibit. Which router is the designated router for the broadcast network? A B C D. There is not enough information given to determine the designated router. Correct Answer: B /Reference: : QUESTION 159 Click on the exhibit.

111 A service provider is deploying a 6 over 4 tunnel to connect a customer's corporate IPv6 network to all devices at the branch office as shown in the exhibit. Which command is used to create the route to the branch office network on PE1? A. Configure router static-route 2001:DB8:1:201::/64 indirect B. Configure router static-route 2001:DB8:1:201:764 indirect 2001:DB8:1:200::2 C. Configure router static-route 2001:DB8:1:200::/56 indirect D. Configure router static-route 2001:DB8:1:200:756 indirect 2001:DB8:1:200::2 Correct Answer: C /Reference: : QUESTION 160 When a router performs the SPF calculation, which router is used as the root of the shortest path tree? A. The router with the least number of links. B. The router with the lowest router ID. C. The router's closest neighbor. D. The router doing the calculation. Correct Answer: D

112 /Reference: : QUESTION 161 A router running a link-state protocol sends an update to a neighbor. The neighbor sends an update back. Why would the neighbor do this? A. The neighbor's link-state database has newer information than what it received in the update. B. The neighbor sends the update as an acknowledgement. C. The neighbor's update indicates that it has run out of space in its LSDB. D. The neighbor's update indicates that the sequence number received is the same as the one already in its link-state database. Correct Answer: A /Reference: : QUESTION 162 Click on the exhibit.

113 Router R1 learns the network /24 from IS-IS. Given the OSPF configuration shown, why isn't the /24 route in router R3's route table? A. The route policy should be applied as an import policy. B. The route policy should say "from protocol isis" instead of "from protocol direct". C. The ASBR configuration should be removed. D. The interface between routers R1 and R3 must be in OSPF area 0. Correct Answer: B /Reference:

114 : QUESTION 163 Click on the exhibit. The operator of an IS-IS network wishes to have link metrics dynamically calculated in the same manner as OSPF. The router with system address is one hop away on a 1 Gbps link Which of the following is correct? A. The router is correctly configured. B. A reference-bandwidth is not configured on the router. C. A reference-bandwidth is configured on the router but wide-metrics is not.

115 D. The interface metric must be manually configured to 100. Correct Answer: B /Reference: : QUESTION 164 Which of the following concerning OSPFv3 is TRUE? A. OSPFv3 uses MD5 Authentication. B. Router LSAs carry IPv6 prefix information. C. NSSA is supported in OSPFv3. D. OSPFv3 uses a 64-bit router ID. Correct Answer: C /Reference: : QUESTION 165 Which field of an IPv6 header indicates an upper layer protocol carried in the packet? A. Next Header B. Traffic Class C. Flow Label D. Payload Length E. Options Correct Answer: A /Reference: :

116 QUESTION 166 Which of the following best describes the function of an OSPF Type 4 LSA? A. A Type 4 LSA is originated by an ABR to describe a route to an ASBR to routers outside the area. B. A Type 4 LSA is originated by an ASBR to describe a route to itself to routers outside the area. C. A Type 4 LSA is originated by an ABR that is connected to a stub area. The LSA is injected into the backbone area to provide routing information. D. A Type 4 LSA is originated by an ABR that is connected to a stub area. The LSA is injected into the stub area to provide routing information. Correct Answer: A /Reference: : QUESTION 167 What is the primary purpose of variable length subnet masks (VLSM)? A. To reduce the size of each routing update. B. To allow interoperability between routing protocols. C. To allow different subnet masks for different subnets. D. To reduce the size of the routing table. Correct Answer: C /Reference: : QUESTION 168 Which of the following correctly describes an IPV6 header compared to an IPv4 header? A. The IPv6 header has a header checksum field, header length field and no fragmentation offset field. B. The IPv6 header has no header checksum field, no header length field and does have a fragmentation offset field. C. The IPv6 header has a header checksum field, no header length field and no fragmentation offset field. D. The IPv6 header has no header checksum field, no header length field and no fragmentation offset field.

117 Correct Answer: D /Reference: : QUESTION 169 Click on the exhibit.

118 The OSPF adjacency between routers R1 and R3 does not come up. Which of the following is a possible solution to the problem? A. Stub must be configured on Area 1 of router R1, and removed from Area 1 on router R3. B. Stub must be configured on Area 1 of router R1 and Area 1 of router R3. C. Stub must be configured on Area 0 of router R1 and Area 1 of router R3. D. Area 1 of router R3 should be Area 0, in order to connect via stub to router R1.

119 Correct Answer: B /Reference: : QUESTION 170 Click on the exhibit. If router R2 re-distributes the IS-IS route /24 into OSPF, router R3 will receive two routes to /24. Assume that all IS-IS routers are L1/L2 capable and are in the same area. Which of the following is TRUE? A. Router R3 will install the OSPF route in its routing table. B. Router R3 will install the IS-IS route in its routing table C. Router R3 will install an OSPF route and an IS-IS route in its routing table. D. There is not enough information to answer the question. Correct Answer: B

120 /Reference: : QUESTION 171 Click on the exhibit. The routers have an established IS-IS L2 adjacency on which IPv4 system addresses are exchanged. An operator successfully configures multi-topology IS-IS routing so that the IPv6 system addresses are also exchanged between routers. After IPv6 has been configured, which of the following is TRUE? A. Router R2 has two IS-IS adjacencies and two LSPs B. Router R2 has two IS-IS adjacencies and three LSPs C. Router R2 has two IS-IS adjacencies and four LSPs D. Router R2 has three IS-IS adjacencies and three LSPs E. Router R2 has three IS-IS adjacencies and four LSPs

121 F. Router R2 has three IS-IS adjacencies and six LSPs Correct Answer: C /Reference: : QUESTION 172 Click on the exhibit.

122 Which of the following would you expect to see in router R4's OSPF database? A. Option A B. Option B C. Option C D. Option D Correct Answer: C

123 /Reference: : QUESTION 173 Which of the following is NOT a characteristic of a floating static route? A. The primary and backup routes are to the same destination. B. The primary and backup routes appear in the routing table. C. The backup route is configured with a higher preference value. D. The next-hop of the primary and backup routes are different. Correct Answer: B /Reference: : QUESTION 174 Click on the exhibit.

124 OSPF is operational on all links in the network diagram, all routers are the same cost, and all routers are configured with an ECMP value of 4. Router R5 advertises the prefix /24 into OSPF. How many entries for prefix /24 will be in router R3's routing table? A. 0 B. 1 C. 2 D. 3 E. 4 Correct Answer: C

125 /Reference: : QUESTION 175 Click on the exhibit. Given the output shown, which router is the ASBR in this network? A B C D E. There is no ASBR configured in the network. Correct Answer: E /Reference: :

126 QUESTION 176 The following are statements about fields in the Hello packet that must match in order to form an OSPF adjacency. Which statement is correct? A. The area ID does not have to match. B. The value of the E bit in the options field does not have to match. C. The value of the Hello interval does not have to match. D. The value of the network mask does not have to match. E. The area ID, the E bit value, the Hello interval and network mask must all match. Correct Answer: E /Reference: : QUESTION 177 Which of the following is a difference between IS-IS and OSPF? A. IS-IS supports VLSM and CIDR. B. IS-IS uses OSI addressing. C. IS-IS supports manual summarization D. IS-IS uses periodic Hello messages. Correct Answer: C /Reference: : QUESTION 178 Click on the exhibit.

127 The routers have an established IS-IS L2 adjacency on which IPv4 system addresses are exchanged. An operator successfully configures multi-topology IS-IS routing so that the IPv6 system addresses are also exchanged between routers. After IPv6 has been configured, which of the following is TRUE? A. Router R2 has two IS-IS-adjacencies and two LSPs. B. Router R2 has two IS-IS-adjacencies and four LSPs. C. Router R2 has two IS-IS-adjacencies and three LSPs. D. Router R2 has four IS-IS-adjacencies and six LSPs. Correct Answer: C

128 /Reference: : QUESTION 179 Click on the exhibit. The numbers beside the links are the metrics for that link. Given the diagram, what path will traffic follow from router R2 to router R8, and from router R8 to router R2, if IS-IS is the routing protocol?

129 A. Router R2 to router R8 will follow (R2-R3-R5-R7-R8). Router R8 to R2 will follow (R8-R7-R5-R3- R2) B. Router R2 to router R8 will follow (R2-R3-R4-R6-R7-R8). Router R8 to R2 will follow (R8-R7-R6- R4-R3-R2) C. Router R2 to router R8 will follow (R2-R3-R5-R7-R8). Router R8 to R2 will follow (R8-R7-R6-R4- R3-R2) D. Router R2 to router R8 will follow (R2-R3-R4-R6-R7-R8) Router R8 to R2 will follow (R8-R7-R5- R3-R2) Correct Answer: A /Reference: : QUESTION 180 Which of the following is not included in a Router LSA? A. Operationally down interfaces in OSPF B. Fully adjacent virtual links C. Waiting state broadcast links D. Fully adjacent point-to-point links E. Loopback Interfaces in OSPF Correct Answer: A /Reference: : QUESTION 181 Click on the exhibit.

130 What triggers convergence of the routing protocol when the link between switch 1 and switch 2 goes down? A. Convergence is triggered when the adjacency between routers R1 and R2 drops as a result of hello timeouts. B. Convergence is triggered when the physical interfaces between routers R1 and R2 go down. C. Convergence will not be triggered because switches cannot run routing protocols between them. D. Convergence is triggered when the switches notify the routers about the link-state info. E. Convergence is triggered when an LSA is sent from router R1 to router R2 to indicate that the link is down. Correct Answer: A /Reference: : QUESTION 182 An Alcatel - Lucent 7750 SR receives a route from an IS-IS LSP with internal reachability, and receives the same route from an OSPF Type 5 LSA. If all protocol preferences are default, which route will be installed in the route table? A. The route learned from IS-IS will be installed. B. The route learned from OSPF will be installed. C. Both routes will be installed. D. There is not enough information to answer the question Correct Answer: A

131 /Reference: : QUESTION 183 Which of the following is a type of authentication that is supported by OSPF on the Alcatel-Lucent 7750 SR? A. Challenge handshake authentication protocol (CHAP) B. Two factor authentication C. MD5 authentication D. Extensible authentication protocol (EAP) Correct Answer: C /Reference: : QUESTION 184 Which of the following about 6over4 is FALSE? A. The CE routers run only IPv6. B. The PE routers must run IPv4 and IPv6. C. The P routers must run IPv4 and IPv6. D. IPv6 routes on the PE routers may have an IPv4 address as the next hop. Correct Answer: C /Reference: : QUESTION 185 Which OSPFv3 LSA is similar to the OSPFv2 Type 5 LSA? A. AS External

132 B. Inter-Area Prefix C. Inter-Area Router D. Intra-Area Prefix Correct Answer: A /Reference: : QUESTION 186 Which of the following best describes a unicast IPv6 address? A. Fixed total of 128 bits, where 64 bits are used for routing and 64 bits are used as an interface identifier. B. Fixed total of 128 bits, where 32 bits are used for the global prefix, 32 bits are used for the subnet and 64 bits are used as an interface identifier. C. Variable total length, where at least 48 bits are used for the global prefix, 48 bits are used for the subnet and 64 bits are used as an interface identifier. D. Variable total length, where at least 64 bits are used for routing and 64 bits are used as an interface identifier Correct Answer: A /Reference: : Topic 5, Volume E QUESTION 187 Which type of OSPF LSA lists the routers attached to a broadcast network? A. Type 1 B. Type 2 C. Type 3 D. Type 4 E. Type 5 Correct Answer: B

133 /Reference: : QUESTION 188 Which of the following about Type 4 LSAs is FALSE? A. A Type 4 LSA is not generated in a single area AS. B. A Type 4 LSA is generated by the ABRs of the area that contains the ASBR. C. A Type 4 LSA advertises the external networks connected to the ASBR. D. A Type 4 LSA is not flooded in the area that contains the ASBR. Correct Answer: C /Reference: : QUESTION 189 Click on the exhibit.

134 Given the output, which of the following is the most accurate statement about the network? A. There are five broadcast links and there are no point-to-point links. B. There are five broadcast links and there are five point-to-point links. C. There are five broadcast links. It's not possible to say how many point-to-point links there are. D. It's not possible to say how many broadcast or point-to-point links there are. Correct Answer: C /Reference: : QUESTION 190 Click on the exhibit.

135 Router R2 uses IS-IS to advertise the network /24 to R1. How can router R1 discard the route? A. Use an import policy and a prefix list on router R2. B. Use an export policy and a prefix list on router R1. C. Use an import policy and a prefix list on router R1. D. Router R1 cannot discard the route because IS-IS does not support import policies. Correct Answer: D /Reference: : QUESTION 191 Which type of LSA packets describe external routes originated within an NSSA area, and to what type are they converted to at the ABR? A. They are Type 7 within the area and are not modified at the ABR. B. They are Type 5 within the area and converted to Type 3 at the ABR. C. They are Type 5 within the area and are not modified at the ABR. D. They are Type 7 within the area and converted to Type 5 at the ABR.

136 Correct Answer: D /Reference: : QUESTION 192 Click on the exhibit. What is the correct command to configure a default route on the Alcatel-Lucent 7750SR R2? A. config> static-route /0 next-hop B. config>router> static-route next-hop C. config>router> static-route /0 next-hop D. config>router> static-route /0 next-hop Correct Answer: D

137 /Reference: : QUESTION 193 Which of the following regarding the IS-IS CSNP is FALSE? A. CSNPs are used to maintain consistency in the Link-State database. B. CSNPs are advertised before an adjacency is formed with another router. C. There are two types of CSNPs: Level 1 and Level 2. D. The CSNP lists the LSPs in the router's database Correct Answer: B /Reference: : QUESTION 194 Which is the OSPFv3 equivalent to the OSPFv2 Type 7 LSA? A. Intra-Area Prefix LSA B. Router LSA C. AS External LSA D. NSSA LSA Correct Answer: D /Reference: : QUESTION 195 Click on the exhibit.

138 Given the contents of the Router LSA, which of the following best describes the local topology of the router? A. The router has a system interface, one point-to-point interface and one virtual link. B. The router has a system interface, one passive interface, one point-to-point interface and one virtual link. C. The router has a system interface, one point-to-point interface and one broadcast interface. D. The router has a system interface, one passive interface, one point-to-point interface and one broadcast interface.

139 Correct Answer: C /Reference: : QUESTION 196 Click on the exhibit. A static route has been configured on router R1 to reach the PC at What might be causing the ping to fail?

140 A. Router R2 needs a static route to the PC. B. Router R2 needs a default to router R1. C. Router R1 needs a default route to router R2. D. The static route should use a next-hop of Correct Answer: D /Reference: : QUESTION 197 Which of the following is a valid IPv6 address equivalent to 2001:0da8:0000:0000:0024:0000:4ab9:0300? A. 2001:0da8:::0024:0000:4ab9:03 B. 2001:0da8::0024::4ab9:0300 C. 2001:da8::24::4ab9:300 D. 2001:da8::24:0:4ab9:300 Correct Answer: D /Reference: : QUESTION 198 Click on the exhibit.

141 OSPF is operational on all links in the network diagram, all links have the same cost and all routers are configured with an ECMP value of 4. Router R4 advertises the prefix /24 into OSPF. How many entries for prefix /24 will be l n router R1's routing table? A. 0 B. 1 C. 2 D. 3 E. 4 Correct Answer: B /Reference: : QUESTION 199

142 In IS-IS, which of the following regarding an L1/L2 router is FALSE? A. An L1/L2 router can have adjacencies with routers in different areas. B. An L1/L2 router calculates separate SPF trees for the Level 1 and Level 2 topology. C. An L1/L2 router advertises its L2 routes to other L1 routers in the same area. D. An L1/L2 router sets the ATT bit in L1 LSPs to indicate that it has routes to other areas. Correct Answer: C /Reference: : QUESTION 200 Click on the exhibit.

143 is a loopback interface on router R2 and is distributed to OSPF area 0, but the ping fails from router R3. Which of the following is a possible solution to the problem? A. Add the "originate-default-route" option in the NSSA area configuration on router R3. B. Add the "summaries" option to the NSSA area configuration on router R1. C. Configure a static route on router R1 to D. Configure a default route on router R2.

144 Correct Answer: B /Reference: : QUESTION 201 How does an IS-IS router acknowledge the receipt of an IS-IS LSP on a point-to-point link? A. They are explicitly acknowledged by sending a CSNP to the sender identifying the LSP. B. They are implicitly acknowledged as a part of the link-state database synchronization and maintenance procedures. C. They are explicitly acknowledged by sending a PSNP to the sender identifying the LSP. D. They are implicitly acknowledged by the DIS multicast of CSNPs. Correct Answer: C /Reference: : QUESTION 202 Which of the following is FALSE about the databases used by a link-state routing protocol in a single area routing domain? A. The link-state database has local topology information from all the routers. B. The adjacency database contains all the links between all the routers. C. The forwarding database contains the next hop for all known prefixes. D. The link-state database is the same for all routers. Correct Answer: B /Reference: : QUESTION 203 What is the primary purpose of variable length subnet masks (VLSM)?

145 A. To reduce the size of each routing update. B. To allow interoperability between routing protocols. C. To allow different subnet masks for different subnets. D. To reduce the size of the routing table. Correct Answer: C /Reference: : QUESTION 204 Click on the exhibit. Router R1 distributes its loopbacks into IS-IS and globally routed addresses are configured as shown.

146 How many routes will router R4 have in its IPv6 route table? A. 1 B. 2 C. 3 D. 4 E. 6 F. 7 Correct Answer: C /Reference: : QUESTION 205 Click on the exhibit.

147 The operator of an IS-IS network wishes to have link metrics dynamically calculated in the same manner as OSPF. The router with system address is one hop away on a 1Gbps link Which of the following is correct? A. The router is correctly configured. B. Neither a reference-bandwidth nor wide-metrics is configured on the router. C. A reference-bandwidth is configured on the router but wide-metrics is not. D. Wide-metrics is configured on the router but a reference-bandwidth is not. Correct Answer: C /Reference: : QUESTION 206 An OSPF router receives an update in which the sequence number, age, and checksum are the same as the entry already in the topological database. What action does the router take? A. The link-state information is not populated in the database, but is forwarded to all neighbors. B. The link-state information already in the database is overwritten and the age is reset. C. The link-state information is not populated in the database and an acknowledgement is sent. D. The link-state information is regarded as old and nothing is done. E. A link-state request is performed to increase the sequence number. Correct Answer: C /Reference: : QUESTION 207 An OSPF backbone area contains Type 5 LSAs. If an attached area receives only Summary LSAs from the backbone area, what type of area is the attached area? A. Normal

148 B. Stub C. Totally stubby D. Totally NSSA Correct Answer: B /Reference: : QUESTION 208 Click on the exhibit. Two neighboring OSPF routers have exchanged the packets shown. What state is the adjacency in? A. Down B. Initializing

149 C. 2-way D. Full Correct Answer: D /Reference: : QUESTION 209 If the OSPF reference bandwidth is set to 1000 Gbps. what is the cost of a 1 Gbps interface? A. 1 B. 10 C. 100 D Correct Answer: D /Reference: : QUESTION 210 Which component of the Alcatel-Lucent 7750 SR is in charge of performing the longest prefix match lookup on packets that arrive on the physical interfaces? A. CPM B. MDA C. Switch Fabric D. IOM Correct Answer: D /Reference: :

150 QUESTION 211 Link-state PDUs include an age field. Which of the following is FALSE? A. When link-state information reaches the maximum age on a router, the router will flood that information to its neighbors. B. When a router detects that any of its link-state information has reached the maximum age, it will request a new update from the source router. C. Aging helps ensure that links, which are no longer part of the topology, will eventually get removed from the LSDB. D. The age value is updated as the information is flooded throughout the network and when it is in the LSDB. Correct Answer: B /Reference: : QUESTION 212 In an OSPF network, which of the following is NOT a result of manual summarization on an ABR? A. It can reduce the topological database size. B. It can reduce the size of the route table. C. It can reduce the number of Summary LSAs. D. It can reduce the number of Router LSAs. Correct Answer: D /Reference: : QUESTION 213 Click on the exhibit.

151 A static route has been configured on router R1 to reach the PC at What else is required to make the ping succeed? A. A default route on router R2 to router R1. B. A default route on the PC to router R2. C. A static route on the PC to router R2 and a static route on router R2 to the PC. D. A default route on router R1 to router R2. Correct Answer: B

152 /Reference: : QUESTION 214 Click on the exhibit.

153 All ports in the network are operationally up and have a speed of 1Gbps. Which of the following is TRUE?

154 A. Data traffic from network /24 to /24 will be forwarded through router R2. B. Data traffic from network /24 to /24 will be forwarded from router R3 directly to router R1. C. The system interface of routers R1 and R3 must be included into OSPF for traffic to flow between the /24 and /24 networks. D. The OSPF adjacency between router R1 and router R3 is operationally up. Correct Answer: D /Reference: : QUESTION 215 Click on the exhibit. What type of OSPFv3 LSA is shown? A. Router LSA B. Network LSA C. Inter-Area Prefix LSA D. Link LSA Correct Answer: B

155 /Reference: : QUESTION 216 Click on the exhibit. OSPF is operational on all links in the network diagram, all links are the same cost, and all routers are configured with an ECMP value of 4. Router R4 advertises the prefix /24 into OSPF. How many entries for prefix /24 will be in router R5's routing table? A. 0 B. 1

156 C. 2 D. 3 E. 4 Correct Answer: C /Reference: : QUESTION 217 Which of the following regarding the IS-IS PSNP is FALSE? A. PSNPs are used on point-to-point links to acknowledge the receipt of an LSP. B. There are three types of PSNPs: Level 1, Level 2, and Level 1/2. C. A PSNP lists some of the LSPs in the router's database. D. PSNPs are used by an IS-IS router to request LSP information from a neighboring router. Correct Answer: B /Reference: : QUESTION 218 Which of the following is NOT a field in the IPv6 header? A. Next Header B. Traffic Class

157 C. Hop Limit D. Fragment Offset E. Flow Label Correct Answer: D /Reference: : QUESTION 219 Click on the exhibit.

158 In the topology shown, router R1 is an ASBR configured to export external routes to OSPF. Assuming that there are no stub or NSSA networks, which of the following regarding LSAs is TRUE? A. Only router R1 will generate Type 4 LSAs. B. Only router R3 will generate Type 4 LSAs. C. Routers R3 and R6 will generate Type 4 LSAs. D. Routers R1.R3 and R6 will generate Type 4 LSAs. Correct Answer: C /Reference: : QUESTION 220 Click on the exhibit. What type of OSPFv3 LSA is shown? A. Router LSA B. Network LSA C. Intra-Area Prefix LSA D. Link LSA

159 Correct Answer: C /Reference: : QUESTION 221 Which of the following about IS-IS is FALSE? A. IS-IS uses the concept of Level 1 and Level 2 routers to implement hierarchy. B. An IS-IS router belongs to one or more areas. C. All Level 2 routers belong to the same area. D. A Level 1 router forwards traffic to other areas through the nearest Level 1/2 router. Correct Answer: C /Reference: : QUESTION 222 Click on the exhibit. Examine the physical topology of the IS-IS network, the metrics of the links and the levels of the routers. All routers have a system address included in IS-IS. Which of the following describes the route that router R4 will use to reach the system address of router R6? A. Router R4 will have a route to router R6's system address with router R2 as the next-hop. B. Router R4 will have a default route with router R2 as the next-hop. C. Router R4 will have a default route with router R3 as the next-hop. D. Router R4 will not have a route to router R6's system address, nor will it have a default route. Correct Answer: C /Reference:

160 : QUESTION 223 Click on the exhibit. If router R2 re-distributes the IS-IS route /24 into OSPF, router R3 will receive two routes to /24 Assume that all IS-IS routers are L1/L2 capable and are in the same area. What will be the preference of the two routes? A. OSPF internal preference and IS-IS Level 1 internal preference. B. OSPF internal preference and IS-IS Level 1 external preference. C. OSPF external preference and IS-IS Level 1 internal preference. D. OSPF external preference and IS-IS Level 2 internal preference. E. OSPF external preference and IS-IS Level 1 external preference. Correct Answer: C /Reference: :

161 QUESTION 224 What type of packet will cause an OSPF router to respond with a link-state request packet? A. Hello B. Link-state request C. Link-state acknowledgment D. Link-state update E. Database description Correct Answer: E /Reference: : QUESTION 225 Click on the exhibit. Assuming point-to-point links, which of the following is TRUE? A. Routers R1 and R2 are L2 routers. Routers R3 and R4 are L1/L2 routers. B. Routers R1, R2, and R4 are L1/L2 routers Router R3 is an L1 router. C. Routers R1, R2, and R3 are L2 routers. Router R4 is an L1 router.

162 D. Routers R1 and R2 are L1/L2 routers. Routers R3 and R4 are L1 routers. Correct Answer: D /Reference: : QUESTION 226 Which OSPFv3 LSA advertises the location of an ASBR? A. Intra-Area Prefix LSA B. Inter-Area Prefix LSA C. Inter-Area Router LSA D. AS External LSA Correct Answer: C /Reference: : QUESTION 227 In an IS-IS network, why does the DIS create a pseudo-node? A. It represents a group of routers on the same non-broadcast network. B. It represents the topological database of the backbone network in an IS-IS network. C. It represents a broadcast sub-network. D. It represents the complete topology of an IS-IS area. Correct Answer: C /Reference: :

163 QUESTION 228 Which OSPFv3 LSA type is similar in function to the OSPFv2 Type 3 LSA? A. Link B. Intra-Area Prefix C. Inter-Area Prefix D. Inter-Area Router Correct Answer: C /Reference: : QUESTION 229 Which of the following is a feature of a black-hole static route? A. It discards packets based on the source address. B. It discards packets that match the destination prefix. C. It returns ICMP unreachable messages. D. It discards packets based on the egress port. Correct Answer: B /Reference: : QUESTION 230 Click on the exhibit.

164 Given the output shown, which router is the ASBR in this network? A B C D E. There is no ASBR configured in the network. Correct Answer: C /Reference: : QUESTION 231 Click on the exhibit.

165 Which of the following best describes the format of data traffic sent to the server as it exits from the PC? A. The destination IP address will be the system IP address of router R1 and the destination MAC address will be the MAC address of the router R1 port connected to the PC. B. The destination IP address will be the IP address of the router R1 port connected to the PC and the destination MAC address will be the MAC address of the router R1 port connected to the PC. C. The destination IP address will be the IP address of the server and the destination MAC address will be the MAC address of the server. D. The destination IP address will be the IP address of the server and the destination MAC address will be the MAC address of the router R1 port connected to the PC. Correct Answer: D /Reference: : QUESTION 232

166 Click on the exhibit.

167 An OSPFv3 router is attached to a non-ospf domain that includes networks 2001:DB8:8::/ DB8:9::/64 and 2001 :DB8:A::/64. Other routers in the OSPF domain see the prefix 2001, DB8:8::/64, but not the other two prefixes. What could cause this? A. The router is not configured as an asbr. B. The router is not configured as an NSSA. C. The export policy is not applied to OSPFv3. D. The prefix list should be 2001:DB8:8::/46 Correct Answer: D /Reference: : QUESTION 233 An IS-IS router receives a CSNP that references an older LSP than the one in its database. What action is taken? A. The router sends a copy of the LSP from its database to its neighbor. B. The router sends a PSNP to its neighbor describing the LSP in its database. C. The router updates its database with the LSP and floods a copy to its other neighbors. D. The router sends a PSNP to its neighbor to request the LSP. Correct Answer: A /Reference: : QUESTION 234 Two IS-IS routers are exchanging Hello packets with different authentication types. Which of the following is TRUE? A. Different authentication types are not possible because IS-IS only supports password authentication. B. An adjacency will not be formed. C. The two routers negotiate the authentication type and then reach the up state. D. Only an L2 adjacency will form, as long as both routers are L2 capable.

168 Correct Answer: B /Reference: : QUESTION 235 Which of the following route types must be manually configured and will not re-route traffic when a link failure occurs in its path? A. A route from IS-IS. B. A route from OSPF. C. A floating static route. D. A static route. Correct Answer: D /Reference: : QUESTION 236 Why does IPv6 not use ARP? A. The ARP functionality has been replaced by the Neighbor Discovery protocol. B. The ARP functionality is not needed due to the increased IPv6 address space. C. ICMPv6 reduced its role to connectivity checking and auto-configuration only. D. ICMFV6 replaced the ARP functionality with Multicast Listener Discovery (MLD). Correct Answer: A /Reference: : QUESTION 237

169 Click on the exhibit. Router R2 uses OSPF to advertise the network /24 to router R1. A route policy has been configured to reject the route on router R1. Why doesn't the route policy work? A. The prefix list "reject" should be " /16 exact". B. Router R1 should be configured as an OSPF "asbr". C. The policy was not "committed" after creation. D. Router R1 cannot reject the route because OSPF does not support import policies Correct Answer: D

170 /Reference: : QUESTION 238 Click on the exhibit. Router R2 has a directly connected interface to network /24 that is included in IS-IS. If router R4 redistributes the IS-IS route to /24 into OSPF, router R3 will receive two routes to /24. Assume that all IS-IS routers are L1/L2 capable and are in the same area.

171 Which of the following is TRUE? A. Router R3 will install the IS-IS route in it's routing table. B. Router R3 will install the OSPF route in it's routing table. C. Router R3 will install an OSPF route and an IS-IS route in it's route table. D. There is not enough information to answer the question. Correct Answer: A /Reference: : QUESTION 239 Which of the following describes the purpose of 6over4 tunneling? A. To give IPv6 traffic preferential routing over IPv4 routes. B. To allow core routers running only IPv6 protocols to carry IPv4 traffic. C. To give IPv4 only routers the ability to route based on IPv6 addresses. D. To allow IPv6 traffic to pass through an IPv4 network. Correct Answer: D /Reference: : QUESTION 240 In OSPFv3, which of the following LSA types carries prefixes and is only flooded in the area where it is generated? A. Link B. AS External C. Router D. Intra-Area Prefix Correct Answer: D

172 /Reference: : QUESTION 241 Click on the exhibit.

173 is a loopback interface on router R2 and is distributed to OSPF area 0, but the ping fails from router R3. Which of the following is a possible solution to the problem? A. Add "stub no summaries" to the area 1 configuration on router R1. B. Add the "originate-default-route" option in the area 1 configuration on router R1. C. Add a default static route on router R3.

174 D. Include the system interface in the area 1 configuration on router R3. E. Add a static route on router R3 to Correct Answer: D /Reference: : QUESTION 242 What event causes an OSPF adjacency to change from 'down' to 'two way'? A. The router receives a link-state update in response to a link-state request. B. The router receives a Hello packet from its neighbor that contains its own router ID in the neighbor list. C. The router receives a database description packet from its neighbor. D. The router receives a link-state acknowledgement in response to a link-state update Correct Answer: B /Reference: : QUESTION 243 Click on the exhibit.

175 In the topology shown, router R1 is an ASBR configured to export external routes to OSPF. Assuming that there are no stub networks, which of the following statements regarding Type 5 LSA generation is TRUE? A. Router R1 generates a Type 5 LSA that is flooded to area 1 only. B. Router R1 generates a Type 5 LSA that is flooded to areas 1 and 0. Router R6 generates a Type 5 LSA that is flooded to area 2. C. Router R1 generates a Type 5 LSA that is flooded to areas 0.1, and 2. D. Router R3 generates a Type 5 LSA that is flooded to areas 0 and 2 E. Type 5 LSAs are not generated in this network topology. Correct Answer: C

176 /Reference: : QUESTION 244 Which of the following are major features of OSPF? (Choose 2.) A. Fast reroute capability. B. Control traffic prioritization. C. Route redistribution. D. Traffic engineering extensions. E. Cut through forwarding. Correct Answer: CD /Reference: : QUESTION 245 An Alcatel-Lucent 7750 SR has a port with the MAC address of 00;03:FA:AC:77: AF. The port is bound to an interface. If IPv6 is then enabled on that interface.what will the link-local address be? A. FE80::203:FAFF:FEAC:77AF/64 B. 2000::203:FAFFFEAC:77AF/64 C. FE80::3FAFF:FEAC:77AF/64 D. FC00::203:FAFF:FEAC:77AF/64 E. FC00::3:FAFF:FEAC:77AF/64 Correct Answer: A /Reference: : QUESTION 246 Click on the exhibit.

177 Assume that OSPFv3 is properly configured on all routers and that router R4 advertises its system prefix into Area 0. Which of the following best describes how router R5 learns router R4's IPv6 system prefix?

178 A. With a Router LSA originated by router R1. B. With a Router LSA originated by router R5. C. With a Router LSA originated by router R4. D. With an Inter-Area Prefix LSA originated by router R1. E. With an Inter-Area Prefix LSA originated by router R5. F. With an Inter-Area Prefix LSA originated by router R4. Correct Answer: D /Reference: : QUESTION 247 Which of the following best describes the forwarding of a IPv6 packet that has a destination anycast address? A. It is sent to all nodes on the local link. B. It is sent to all nodes on the local network. C. It is sent to all nodes that have joined the anycast group. D. It is sent to the nearest node that is assigned the anycast address E. It is sent to all nodes that are assigned the anycast address. Correct Answer: D /Reference: : QUESTION 248 Which OSPFv3 LSA type is generated by an ABR to advertise prefixes from one area to another? A. AS External B. Intra-Area Prefix C. Inter-Area Router D. Inter-Area Prefix

179 Correct Answer: A /Reference: : QUESTION 249 Which of the following best describes an OSPF Type 3 LSA? A. A Type 3 LSA is generated by an ASBR only when route summarization is configured. B. A Type 3 LSA is generated by an ABR only when route summarization is configured. C. A Type 3 LSA is generated by an ASBR to describe routes to routers outside the area. D. A Type 3 LSA is generated by an ABR to describe routes to routers outside the area. Correct Answer: D /Reference: : QUESTION 250 Which of the following is a characteristic of OSPFv2 that was NOT preserved in OSPFv3? A. LSA flooding mechanism. B. Totally stubby areas. C. MD5 authentication. D. DR and BDR election. Correct Answer: C /Reference: QUESTION 251 How is the DR selected when an OSPF router is added to a broadcast network?

180 A. The current DR is selected, if there is one. Otherwise, the router with the lowest priority is the DR. If priorities are the same, the DR is chosen based on the lowest RID. B. The current DR is selected, if there is one. Otherwise, the router with the highest priority is the DR. If priorities are the same, the DR is chosen based on the highest RID. C. The router with the lowest priority is the DR. If priorities are the same, the current DR is selected. Otherwise the DR is chosen based on the lowest RID. D. The router with the highest priority is the DR. If priorities are the same, the current DR is selected. Otherwise the DR is chosen based on the highest RID. Correct Answer: B /Reference: : QUESTION 252 Which of the following best describes the features of Classless Inter-Domain Routing (CIDR)? A. Automatic summarization and the use of IP addresses that use any number of bits for the network portion of the address. B. Manual summarization and the use of IP addresses that use any number of bits for the network portion of the address. C. Automatic summarization and the use of IP addresses that use a fixed number of bits for the network portion of the address. D. Manual summarization and the use of IP addresses that use a fixed number of bits for the network portion of the address. Correct Answer: B /Reference: : QUESTION 253 Click on the exhibit.

181 Before the link failure, all routers have operational OSPF adjacencies between them and there is a BFD session between routers R1 and R3. After the link failure, which of the following affects the IGP convergence time? A. The convergence time depends on the value of the OSPF hello timers on routers R1 andr3. B. The convergence time depends on the value of the OSPF hello timers and Dead interval on routers R1 and R3. C. The convergence time depends on the value of the BFD interval and multiplier settings on routers R1 andr3. D. The convergence time depends on the time taken by the switches to detect the link failure. Correct Answer: C

182 /Reference: : QUESTION 254 When a router receives an IP packet, but does not find a match in the routing table for the destination IP address, what actions are performed by the router? A. The packet is flooded out all router interfaces. B. The packet is dropped and an ICMP unreachable message is sent back to the source. C. The packet is silently discarded. D. The packet is flooded out all interfaces and an ICMP unreachable message is sent. Correct Answer: B /Reference: : QUESTION 255 Which of the following statements regarding distance vectors protocols are true? (Choose two answers). A. RIPv1, RIPv2, and BGP are distance vector protocols. B. OSPF and IS-IS are distance vector protocols. C. Routing tables are exchanged between neighbors; however, no routing table is transmitted beyond the immediate neighbor. D. Distance vector protocols use the Dijkstra SPF algorithm. E. Routers that participate in distance vector routing protocols maintain full knowledge of distant routers and how they interconnect Correct Answer: AC /Reference: : QUESTION 256 Click the exhibit button.

183 Routers R1,, R2, and R3 are running a classful routing protocol between them. Assuming that router R1 advertises all directly connected networks, how will these networks be represented in router R3's routing table? A. Router R3's routing table can only contain one of the routes, which will result in route flapping. B. Router R3's routing table will have one entry for /24 and one entry for /24. C. The networks will be represented with one entry of /8 in router R3's routing table. D. The networks will be represented with one entry of /24 in router R3's route table.

184 Correct Answer: C /Reference: : QUESTION 257 In an IP datagram, which of the following fields identifies the receiving application? A. The protocol field of the transport layer header. B. The port field of the transport layer header. C. The protocol field of the network layer header. D. The port field of the network layer address. Correct Answer: B /Reference: : QUESTION 258 Static routing will be used in a network between a corporate head office, with many connected networks, and a branch office, with one connection to the head office. Which of the following best describes the likely configuration? A. The corporate head office router will have a default route and the branch site will have a more specific static route. B. The corporate head office router and the branch office router will both have specific static routes. C. The corporate head office router and the branch router will both have default routes. D. The corporate head office router will have a more specific static route and the branch office router will have a default route. Correct Answer: D /Reference: : QUESTION 259

185 Click the exhibit button. What is the command to configure a static route on the Alcatel-Lucent 7750 SR router R1 to reach the network behind router R2? A. configure router static-route /24 next-hop B. configure router static-route /24 next-hop C. configure router static-route /24 next-hop D. configure router static-route /24 next-hop Correct Answer: A /Reference: : QUESTION 260 There is an IP host with IP address A static route is created, using the "configure router static- route /24 next-hop " command. What is the correct traceroute command to test this static route on an Alcatel-Lucent 7750 SR? A. traceroute B. traceroute next-hop C. traceroute next-hop D. traceroute does not work on the Alcatel-Lucent 7750 SR.

186 E. traceroute Correct Answer: A /Reference: : QUESTION 261 Click the exhibit button. A static route is created on router R1 "using the "static-route /0 next-hop " command. What command can be used to test the static route on an

187 Alcatel-Lucent 7750 SR? A. ping static B. ping static /0 C. ping D. ping Correct Answer: C /Reference: : QUESTION 262 What is the default preference value for a static route in the Alcatel-Lucent 7750 SR? A. 0 B. 5 C. 10 D. 15 Correct Answer: B /Reference: : QUESTION 263 Which of the following statements apply to link state protocol behavior? Choose three answers. A. Routers broadcast the entire route table to all neighbors. B. Information about directly connected links is sent to all neighbors. C. An adjacency database is maintained by each router. D. The sequence number for an update is incremented as it is flooded from router to router. E. The topological database is the same for all routers in a single area.

188 Correct Answer: BCE /Reference: : QUESTION 264 Click the exhibit button. What triggers convergence of the routing protocol when the link between switch 1 and switch 2 goes down? A. Convergence is triggered when the adjacency between routers R1 and R2 drops as a result of Hello timeouts. At this point, both routers R1 and R2 re-compute

189 their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged. B. Convergence is triggered when the physical interfaces between routers R1 and R2 go down. At this point, both routers R1 and R2 re-compute their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged. C. Convergence will not be triggered because switches cannot run routing protocols between them. D. Convergence is triggered when the switches notify the routers about the link state information. At this point, both routers R1 and R2 re-compute their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged E. Convergence is triggered when an LSA is sent from router R1 to router R2 to indicate that the link is down. At this point, both routers R1 and R2 re-compute their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged. Correct Answer: A /Reference: : QUESTION 265 A service provider is deploying a 6over4 tunnel to connect a customer's branch office IPv6 network to the corporate headquarters as shown in the exhibit. Which command is used to create a default route on PE2 for the branch office network? A. configure router static-route /0 indirect B. configure router static-route /0 indirect 2001:DB8:1:100::1 C. configure router static-route ::/0 indirect D. configure router static-route::/0indirect2001:db8:1:100::1 E. configure outer static-route::/0indirect2001:db8:1:101::1 Correct Answer: C

190 /Reference: : QUESTION 266 Which of the following regarding IS-IS DIS is FALSE? A. L1 and L2 routers elect separate DIS's. B. DIS uses a specific Ethernet multicast address to communicate with other routers on the broadcast network. C. If a new router starts up in a LAN and has a higher interface priority, the new router preempts the original DIS and becomes the DIS. D. In broadcast multi-access networks, such as Ethernet, one router is elected as the DIS and a second router as the backup DIS. Correct Answer: D /Reference: : QUESTION 267 What are the three databases that are maintained by a link-state protocol? A. Neighbor, adjacency, routing. B. Neighbor, topology, forwarding. C. Topology, routing, forwarding. D. Topology, forwarding, traffic classification. E. Neighbor, adjacency, forwarding. Correct Answer: B /Reference: : QUESTION 268 Click on the exhibit.

191 OSPF router R2 has both point-to-point and broadcast interfaces and it is not a DR for any interfaces. Router R2 detects the link failure between itself and router R1. Which of the following is correct? A. Router R2 sends an update to on its broadcast and point-to-point interfaces. The DR does not send any updates. B. Router R2 sends an update to on its point-to-point interfaces. The DR sends an update to on the broadcast network. C. Router R2 sends an update to out its point-to-point interfaces and an update to out its broadcast interface. The DR sends updates to on the broadcast network. D. Router R2 sends an update to out its point-to-point interfaces and an update to out its broadcast interface. The DR sends an update to on the broadcast networks. Correct Answer: C /Reference: : QUESTION 269 Which of the following best describes distance vector protocols? A. They periodically exchange copies of routing tables between adjacent routers and do not maintain any knowledge of links on non adjacent routers.

192 B. They use shortest path first algorithms, do not exchange copies of routing tables between routers and do maintain knowledge of links on non adjacent routers. C. They periodically exchange copies of routing tables between adjacent routers and maintain knowledge of links on non adjacent routers. D. They use shortest path first algorithms, exchange copies of routing tables between routers and maintain knowledge of links on non adjacent routers. Correct Answer: A /Reference: : QUESTION 270 The solicited node address for the destination node address of 2001:DB8::30A:216 4DFF:FE14:6CAE is: A. 2001::FF:FE:14:6CAE B. 2001::1:FF:14:6CAE C. FF02.DB8::30A:216:4DFF:FE14.6CAE D. FF02::1:FF14:6CAE Correct Answer: D /Reference: : QUESTION 271 Click on the exhibit.

193 What does the field "2001:DB8:111::/64" represent? A. The router's system address. B. The next-hop prefix. C. The interface's global prefix. D. The next-hop system address. Correct Answer: C /Reference: : QUESTION 272 An Alcatel-Lucent 7750 SR is configured with an export policy to redistribute a loopback prefix into OSPFv3. What type of LSA advertises the prefix to the other OSPFv3 routers in the same area? A. Router LSA

194 B. AS External LSA C. Intra-Area Prefix LSA D. Inter-Area Prefix LSA E. Network LSA Correct Answer: B /Reference: authentic answer. QUESTION 273 In an IP datagram, which field identifies the receiving application A. The protocol field of the transport layer header B. The port field of the transport layer header C. The protocol field of the network layer header D. The port field of the network layer address Correct Answer: B /Reference: accurate answer. QUESTION 274 A static route is created using the command "static-route /0 next-hop ". What command could be used to test the static route on an Alcatel-Lucent 7750 SR? A. Ping static B. Ping static /0 C. Ping D. Ping Correct Answer: C

195 /Reference: correct. QUESTION 275 A static route is created using the command "static-route /24 next-hop ". What is the correct traceroute command to test this static route on an Alcatel- Lucent 7750 SR? A. traceroute B. traceroute /24 next-hop C. traceroute next-hop D. traceroute does not work on the Alcatel-Lucent 7750 SR Correct Answer: A /Reference: : QUESTION 276 Which one of the commands below will create a static route to network /24 on the AlcatelLucent 7750 SR router? A. Static route next hop B. Static-route next-hop /24 C. Static route /24 next hop D. Static-route /24 next-hop Correct Answer: D /Reference: approved answer. QUESTION 277 Click the exhibit button.

196 Given the topology and the show commands, and assuming that router R2 advertises all of its loopbacks into OSPF, what is the correct router R1 configuration?

197 A. Option A

198 B. Option B C. Option C D. Option D Correct Answer: A /Reference: : QUESTION 278 In which of the following types of areas does an OSPF router not set the E bit in its Type 1 LSA? A. Not so stubby area B. Stub area C. Backbone area D. Normal area Correct Answer: B /Reference: : QUESTION 279 Click the exhibit button.

199 In the topology shown, router R1 is an ASBR configured to export external routes to OSPF. Which of the following statements regarding the OSPF LSAs in the network is true? A. Router R1 generates a type 5 LSA that is flooded through all OSPF areas. B. Router R1 generates a type 7 LSA that is flooded through all OSPF areas. C. Router R1 generates a type 5 LSA that is flooded through area 1. Router R2 generates a type 7 LSA that is flooded through areas 0 and 2. D. Router R1 generates a type 7 LSA that is flooded through area 1. Router R3 generates a type 5 LSA that is flooded through areas 0 and 2. Correct Answer: D

200 /Reference: : QUESTION 280 What is the protocol number for OSPF in the IP header? A. OSPF uses TCP, so the protocol number is 6. B. OSPF uses UDP, so the protocol number is 17. C. OSPF does not use IP. D. OSPF has its own protocol number of 89. Correct Answer: D /Reference: : QUESTION 281 Click the exhibit button.

201 Which of the following would correctly configure routers R2, R3, and R4?

202

203 A. Option A B. Option B C. Option C D. Option D Correct Answer: C /Reference: : QUESTION 282 When are virtual links used in OSPF? A. When two areas need to communicate and there is no area 0. B. When an area needs to traverse another area to reach area 0. C. When two areas are connected to area 0, but there is no direct path between them. D. When an area needs to connect directly to another area without using area 0. Correct Answer: B

204 /Reference: : QUESTION 283 Which of the following statements regarding area border routers in an OSPF network is true? A. The term backbone router has the same definition as the term area border router. B. An OSPF network needs at least one area border router to function. C. Area border routers connect the backbone area to other areas in an OSPF network. D. By definition, an area border router must perform route summarization between areas. Correct Answer: C /Reference: : QUESTION 284 Which of the following correctly lists the 5 OSPF packet types? A. Hello, link state update, link state packet, link State acknowledgement, database description. B. Link state update, link state refresh, link state acknowledgement, database description, notification. C. Hello, link state refresh, link state update, link state acknowledgement, link state authentication. D. Hello, link state update, link state request, link state acknowledgement, database description. Correct Answer: D /Reference: right answer. QUESTION 285 Click the exhibit button.

205

206 The OSPF adjacency between routers R3 and R1 is down. What is the problem? A. Area 1 of router R1 should not be configured as a stub. B. Router R3 has the incorrect authentication key type. C. Router R1 has the incorrect authentication key type. D. There is not enough information to tell. Correct Answer: C /Reference: : QUESTION 286 Which of the following is an optional parameter when configuring IS-IS protocol on a router?

207 A. Configure IS-IS interfaces B. Enable IS-IS C. Configure level capabilities D. Specify an area address Correct Answer: C /Reference: : QUESTION 287 Which of the following features are supported by IS-IS? Choose three answers. A. PDU authentication. B. The ability to customize the link cost metric. C. Use of Bellman-Ford routing algorithm. D. Classless routing. E. Updates sent as layer 3 multicast. Correct Answer: ABD /Reference: exact answer. QUESTION 288 Which of the following statements regarding the IS-IS CSNP is false? A. CSNPs are used to maintain consistency in the link state database. B. CSNPs are advertised before an adjacency is formed with another router. C. There are two types of CSNPs: Level 1 and Level 2. D. CSNPs are advertised after an adjacency is formed with another router. Correct Answer: B

208 /Reference: perfect. QUESTION 289 Click the exhibit button. In the IS-IS network shown, router R1 has been configured to summarize network /24 and /24 as /16. Which router's routing table will be reduced compared to the routing table before the summarization? A. Router R1 B. Router R2 C. Routers R1 and R2

209 D. Router R4 Correct Answer: B /Reference: : QUESTION 290 What value should the AFI be set to for locally administered addressing? A. 1 B. 49 C. 47 D. 45 E. 39 Correct Answer: B /Reference: : QUESTION 291 Click the exhibit button.

210 For the IS-IS network shown, and assuming point-to-point links, what adjacencies will router R1 establish? A. L1/L2 adjacency with router R2.L1 adjacency with router R3 B. L2 adjacency with router R2L1 adjacency with router R3 C. L1/L2 adjacency with router R2L1/L2 adjacency with router R3 D. L1/L2 adjacency with router R2.L1 adjacency with router R4L1 adjacency with router R3 Correct Answer: B /Reference: