Cisco Realtests Exam Bundle

Transcription

1 Cisco Realtests Exam Bundle Number: Passing Score: 800 Time Limit: 300 min File Version: Cisco Exam Bundle Exam Name: Cisco Cisco Certified Network Associate For Full Set of Questions please visit:

2 Question Set 1 QUESTION 1 What interfaces on Router1 have not had any configurations applied? (Choose two) A. A - Ethernet 0 B. B - FastEthenet 0/0 C. C - FastEthernet 0/1 D. D - Serial 0 E. E - Serial 0/0 F. F - Serial 0/1 Correct Answer: CF Use the show ip interface brief to identify what interfaces Router 1 have. Notice that Router1 does not have Ethernet 0 and Serial 0 interfaces. FastEthernet 0/0 and Serial 0/0 were configured with their IP addresses therefore only FastEthernet 0/1 and Serial0/1 have not had any configurations applied. QUESTION 2 Including the address on the Router1 FastEthernet interface, how many hosts can have IP addresses on the LAN to which Router1 is connected? A. A - 6 B. B - 14 C. C - 62 D. D Correct Answer: B The mask address of interface Fa0/0 of Router1 is /28 (as shown in question 1), which has four 0 bits ( ). Therefore there are 24-2 = 14 assignable IP addresses for hosts on the LAN. QUESTION 3 You have been hired by PC Consultants Incorporated to document the layout of the network. Complete the following tasks: Complete the network topology shown in the graphic by dragging the labels below with the appropriate router types, interface types and IP addresses to the graphic. Find the information you need by using the router console attached to the Home router.

3 A. Correct Answer: A First we have to find out the types of these routers to place them in correct positions by using show cdp neighbors command on HOME router: There are 3 columns we should pay more attention to: + Local Intrfce (Local Interface): the interface on the device you are using "show cdp neighbors" command. In this case it is the interface of HOME router + Platform: the platform of neighbor device + Port ID: the neighbor device's port or interface which links to the HOME router From the exhibit, the "Local Interface", "Platform" and "Port ID" columns, we can identify where these four routers should be placed and their corresponding associated ports

4 Finally, we need to identify the IP addresses of four interfaces on neighboring routers using show runningconfig command: And we can easily assign corresponding ip addresses to four neighbor routers, which are on the same network with HOME router's interfaces

5 Please remember in the real CCNA Exam the routers' types, ip addresses and interfaces may be different! So make sure you understand how it works! QUESTION 4 The frame has been received by the ILM router and is to be delivered on the local LAN. Which two statements describe the addressing of the Ethernet frame that has been created by the ILM router? (Choose two) A. A - The destination address will the be the MAC address of the switch A port attached to the Fa0/0 interface of the ILM router. B. B - The destination address will be the MAC address of the WWW server. C. C - The destination address will be the MAC address of the A switch port attached to the WWW server. D. D - The source address will be the MAC address of host F. E. E - The source address will be the MAC address of interface Fa0/0 of the ILM router. Correct Answer: BE

6 Question Set 1 QUESTION 1 When a packet is sent from Host 1 to Server 1, in how many different frames will the packet be encapsulated as it is sent across the internetwork? A. A - 0 B. B - 1 C. C - 2 D. D - 3 E. E - 4 Correct Answer: D Answer: C or D(depending on your understand, please read the comments to understand why) from my understanding, the answer would be 2 because we are talking about PACKETS not frames "When a packet is sent from Host 1 to Server 1, in how many different frames will the PACKET be encapsulated as it is sent across the internetwork?" Dear 9 tutor and others pls check my description is correct or not --> as we all know that MAC address is always Local to the Lan right?? it will not go beyond the LAN... so how many so here the frame encapsulation take place in this way pls note this 1))))))) host1 to R1 use source Mac =Host 1 Destination Mac = e0 Mac of R2 2))))))) R1 serial to R2 serial---> re encapsulation take place and the source serial Mac of R1 and Destination Mac of R2 3))))) R2 e0 Mac as source, sever 1 NIC Mac address destination so the answer is very much clear that it is 3 don't think about HDLC and Frame -relay encapsulation is here.. why we want to think that??

7 its not related to this question i think, and hdlc, frame-relay, PPP are serial encapsulation protocols and never they run in Ethernet port. so how anyone say the answer is 2 QUESTION 2 What must be configured on the network in order for users on the Internet to view web pages located on Web Server 2? A. A - On router R2,configure a default static route to the network B. B - On router r2, configure DNS to resolve the URL assigned to Web Server 2 to the address C. C - On router R1, configure NAT to translate an address on the /24 network to D. D - On router R1, configure DHCP to assign a registered IP address on the /24 network to Web Server 2 Correct Answer: C QUESTION 3

8 On which router should a default route be configured? A. A - on the ISP router B. B - on R1 C. C - on R2 D. D - on R3 E. E - on R4 Correct Answer: B QUESTION 4 With all links operational and all routers converged, which of the following describes the messaging between routers? A. A - Hellos are sent every five seconds. B. B - Multicasts are sent every 60 seconds. C. C - Broadcasts are sent every 30 seconds. D. D - No messaging unless the topology changes. Correct Answer: C QUESTION 5 Why would RIP be used rather than static routes on R1, R2, R3, and R4?

9 A. A - RIP creates more accurate than static routes. B. B - RIP uses less network resources than do static routes. C. C - RIP is supported by more different vendors equipment than static routes. D. D - RIP requires less configuration to automatically adjust when links go down than static routes. Correct Answer: D QUESTION 6 On which router should a static route be configured? A. A - on the ISP router B. B - on R1 C. C - on R2 D. D - on R3 E. E - on R4 Correct Answer: A QUESTION 7 Refer to the topology. Using the information shown, answer the five questions shown on the Questions tab If most of the communication is between hosts and the servers, which switch is best as the root switch for VLAN 20? A. A - Sw-A B. B - Sw-B

10 C. C - Sw-C D. D - Sw-D E. E - Sw-E Correct Answer: E Answer: E : Server 3 and Server 4 belong to VLAN 20 and are connected to Switch-E. If the question asks which switch is best for the whole network then the answer should be Switch-B because it is the most centralized switch on the network. QUESTION 8 What technology helps prevent frames from looping continuously through this switched network? A. A - ARP B. B - VTP C. C - STP D. D - EIGRP E. E - CSMA/CD Correct Answer: C QUESTION 9 What type of link is needed between Sw-A and Sw-B so host C and host D can communicate through Sw-A to the servers? A. A - trunk B. B - access C. C - multi-access D. D - straight-through Correct Answer: A Answer: A : Communication between different VLANs requires a trunk link to forward traffic normally.

11 Question Set 1 QUESTION 1 A network associate is configuring a router for the weaver company to provide internet access. The ISP has provided the company six public IP addresses of The company has 14 hosts that need to access the internet simultaneously. The hosts in the company LAN have been assigned private space addresses in the range of The following have already been configured on the router: - The basic router configuration - The appropriate interfaces have been configured for NAT inside and NAT outside - The appropriate static routes have also been configured (since the company will be a stub network, no routing protocol will be required.) - All passwords have been temporarily set to "cisco" A. Correct Answer:

12 The company has 14 hosts that need to access the internet simultaneously but we just have 6 public IP addresses from to /29. Therefore we have to use NAT overload (or PAT) Double click on the Weaver router to open it Router>enable Router#configure terminal First you should change the router's name to Weaver Router(config)#hostname Weaver Create a NAT pool of global addresses to be allocated with their netmask. Weaver(config)#ip nat pool mypool netmask Create a standard access control list that permits the addresses that are to be translated Weaver(config)#access-list 1 permit Establish dynamic source translation, specifying the access list that was defined in the prior step Weaver(config)#ip nat inside source list 1 pool mypool overload This command translates all source addresses that pass access list 1, which means a source address from to , into an address from the pool named mypool (the pool contains addresses from to ) Overload keyword allows to map multiple IP addresses to a single registered IP address (many-to-one) by using different ports The question said that appropriate interfaces have been configured for NAT inside and NAT outside statements. This is how to configure the NAT inside and NAT outside, just for your understanding: Weaver(config)#interface fa0/0 Weaver(config-if)#ip nat inside Weaver(config-if)#exit Weaver(config)#interface s0/0 Weaver(config-if)#ip nat outside Weaver(config-if)#end Finally, we should save all your work with the following command: Weaver#copy running-config startup-config Check your configuration by going to "Host for testing" and type: C:\>ping The ping should work well and you will be replied from

13 Question Set 1 QUESTION 1 Refer to the exhibit. Why would the network administrator configure RA in this manner? A. A. to give students access to the Internet B. B. to prevent students from accessing the command prompt of RA C. C. to prevent administrators from accessing the console of RA D. D. to give administrators access to the Internet E. E. to prevent students from accessing the Internet F. F. to prevent students from accessing the Admin network Correct Answer: B QUESTION 2 The following access list below was applied outbound on the E0 interface connected to the /29 LAN: access-list 135 deny tcp eq 20 any access-list 135 deny tcp eq 21 any How will the above access lists affect traffic? A. A - FTP traffic from will be denied B. B - No traffic, except for FTP traffic will be allowed to exit E0 C. C - FTP traffic from to any host will be denied D. D - All traffic exiting E0 will be denied E. E - All FTP traffic to network /29 will be denied Correct Answer: D

14 Answer: D : There is always an implicit "deny all" command at the end of every access list, so if an access list doesn't have any "permit" command, it will block all the traffic. If we use the command "access-list 135 permit ip any any" at the end of this access list then the answer should be C - FTP traffic from to any host will be denied. QUESTION 3 The following configuration line was added to router R1 Access-list 101 permit ip any What is the effect of this access list configuration? A. A - permit all packets matching the first three octets of the source address to all destinations B. B - permit all packet matching the last octet of the destination address and accept all source addresses C. C - permit all packet matching the host bits in the source address to all destinations D. D - permit all packet from the third subnet of the network address to all destinations Correct Answer: A QUESTION 4 What would be the effect of issuing the command ip access-group 114 in to the fa0/0 interface? A. A - Attempts to telnet to the router would fail B. B - It would allow all traffic from the network C. C - IP traffic would be passed through the interface but TCP and UDP traffic would not D. D - Routing protocol updates for the network would not be accepted from the fa0/0 interface Correct Answer: B : From the output of access-list 114: access-list 114 permit ip any we can easily understand that this access list allows all traffic (ip) from /24 network QUESTION 5 What would be the effect of issuing the command access-group 115 in on the s0/0/1 interface? A. A - No host could connect to Router through s0/0/1 B. B - Telnet and ping would work but routing updates would fail.

15 C. C - FTP, FTP-DATA, echo, and www would work but telnet would fail D. D - Only traffic from the network would pass through the interface Correct Answer: A : First let's see what was configured on interface S0/0/1: Recall that each interface only accepts one access-list, so when using the command ip access-group 115 in on the s0/0/1 interface it will overwrite the initial access-list 102. Therefore any telnet connection will be accepted (so we can eliminate answer C). B is not correct because if telnet and ping can work then routing updates can, too. D is not correct because access-list 115 does not mention about network. So the most reasonable answer is A. But here raise a question The wildcard mask of access-list 115, which is , means that only host with ip addresses in the form of x.x.x.0 will be accepted. But we all know that x.x.x.0 is likely to be a network address so the answer A: no host could connect to Router through s0/0/1 seems right But what will happen if we don t use a subnet mask of ? For example we can use an ip address of , such a host with that ip address exists and we can connect to the router through that host. Now answer A seems incorrect! Please comment if you have any idea for this sim!

16 Question Set 1 QUESTION 1 On a network of one department, there are four PCs connected to a switch, as shown in the following figure: After the Switch1 restarts. Host A ( the host on the left ) sends the first frame to Host C (the host on the right). What the first thing should the switch do? A. A. Switch1 will add to the switching table. B. B. Switch1 will add to the switching table. C. C. Switch1 will add 000A.8A47.E612 to the switching table. D. D. None of the above Correct Answer: C QUESTION 2 The user of Host1 wants to ping the DSL modem/router at Based on the Host1 ARP table that is shown in the exhibit, what will Host1 do? A. A. send a unicast ARP packet to the DSL modem/router B. B. send unicast ICMP packets to the DSL modem/router C. C. send Layer 3 broadcast packets to which the DSL modem/router responds D. D. send a Layer 2 broadcast that is received by Host2, the switch, and the DSL modem/router Correct Answer: B

17 QUESTION 3 Which of the following describe the process identifier that is used to run OSPF on a router? (Choose two.) A. A. It is locally significant. B. B. It is globally significant. C. C. It is needed to identify a unique instance of an OSPF database. D. D. It is an optional parameter required only if multiple OSPF processes are running on the router. E. E. All routers in the same OSPF area must have the same process ID if they are to exchange routing information. Correct Answer: AC QUESTION 4 Which two statements are true about the command ip route ? (Choose two.) A. A. It establishes a static route to the network. B. B. It establishes a static route to the network. C. C. It configures the router to send any traffic for an unknown destination to the network. D. D. It configures the router to send any traffic for an unknown destination out the interface with the address E. E. It uses the default administrative distance. F. F. It is a route that would be used last if other routes to the same destination exist. Correct Answer: AE QUESTION 5 How should a router that is being used in a Frame Relay network be configured to avoid split horizon issues from preventing routing updates? A. A. Configure a separate sub-interface for each PVC with a unique DLCI and subnet assigned to the subinterface. B. B. Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic. C. C. Configure many sub-interfaces on the same subnet. D. D. Configure a single sub-interface to establish multiple PVC connections to multiple remote router interfaces. Correct Answer: A

18 QUESTION 6 Your company wants to reconfigure a Catalyst which actions must be taken to erase the old configuration? (Choose three) A. A - Erase flash B. B - Restart the switch C. C - Delete the VLAN database D. D - Erase the startup configuration Correct Answer: BCD QUESTION 7 An administrator issues the command "ping " from the command line prompt on a PC host named PC1. If an ICMP reply is received, what does this confirm? A. A - The PC host PC1 has connectivity with a local host B. B - The PC host PC1 has connectivity with a Layer 3 device C. C - The PC host PC1 has a default gateway correctly configured D. D - The PC host PC1 has connectivity up to Layer 5 of the OSI model E. E - The PC host PC1 has the TCP/IP protocol stack correctly installed Correct Answer: E Answer: E : If you are having problems with your network then issue the command "ping " to prove the network card and the TCP/IP software is working correctly. Address is reserved for the test loop back purpose. QUESTION 8 Which two statements describe characteristics of IPv6 unicast addressing? (Choose two)

19 A. A. Global addresses start with 2000::/3 B. B. Link-local addresses start with FE00:/12 C. C. Link-local addresses start with FF00::/10 D. D. There is only one loopback address and it is ::1 E. E. If a global address is assigned to an interface, then that is the only allowable address for the interface. Correct Answer: AD Answer: A D : Below is the list of common kinds of IPv6 addresses: Loopback address ::1 Link-local address FE80::/10 Site-local address FEC0::/10 Global address 2000::/3 Multicast address FF00::/8 From the above table, we learn that A and D are correct while B and C are incorrect. Notice that the IPv6 unicast loopback address is equivalent to the IPv4 loopback address, The IPv6 loopback address is 0:0:0:0:0:0:0:1, or ::1. E is not correct because of anycast addresses which are indistinguishable from normal unicast addresses. You can think of anycast addresses like this: "send it to nearest one which have this address". An anycast address can be assigned to many interfaces and the first interface receives the packet destined for this anycast address will proceed the packet. A benefit of anycast addressing is the capability to share load to multiple hosts. An example of this benefit is if you are a Television provider with multiple servers and you want your users to use the nearest server to them then you can use anycast addressing for your servers. When the user initiates a connection to the anycast address, the packet will be routed to the nearest server (the user does not have to specify which server they want to use). QUESTION 9 Refer to the exhibit. The junior network support staff provided the diagram as a recommended configuration for the first phase of a four-phase network expansion project. The entire network expansion will have over 1000 users on 14 network segments and has been allocated this IP address space: through through What are three problems with this design? (Choose three)

20 A. A - The AREA 1 IP address space is inadequate for the number of users. B. B - The AREA 3 IP address space is inadequate for the number of users. C. C - AREA 2 could use a mask of /25 to conserve IP address space. D. D - The network address space that is provided requires a single network-wide mask. E. E - The router-to-router connection is wasting address space. F. F - The broadcast domain in AREA 1 is too large for IP to function. Correct Answer: ACE QUESTION 10 Refer to the exhibit. The internetwork is using subnets of the address with a subset mask of The routing protocol in use is RIP version 1. Which address could be assigned to the FastEthernet interface on RouterA?

21 A. A B. B C. C D. D E. E Correct Answer: D = (binary form) Increment: 32 First subnetwork: > (A is incorrect because is a broadcast address) Second subnetwork: > Third subnetwork: > (B is incorrect because is a network address) Fourth subnetwork: > (C is incorrect because is a broadcast address) Fifth subnetwork: > Sixth subnetwork: > (D is correct because is the last assignable host address of this subnetwork) Seventh subnetwork: > (E is incorrect because is a network address) QUESTION 11 Refer to the exhibit. For security reasons, information about RTA, including platform and IP addresses, should not be accessible from the Internet. This information should, however, be accessible to devices on the internal networks of RTA. Which command or series of commands will accomplish these objectives? A. A - RTA(config)#no cdp run B. B - RTA(config)#no cdp enable C. C - RTA(config)#interface s0/0 RTA(config-if)#no cdp run D. D - RTA(config)#interface s0/0 RTA(config-if)#no cdp enable

22 Correct Answer: D QUESTION 12 Refer to the exhibit, PC1 pings PC2. What three things will CORE router do with the data that is received from PC1? (Choose three) A. A - The data frames will be forwarded out interface FastEthernet0/1 of CORE router. B. B - The data frames will be forwarded out interface FastEthernet1/0 of CORE router. C. C - CORE router will replace the destination IP address of the packets with the IP address of PC2. D. D - CORE router will place the MAC address of PC2 in the destination MAC address of the frames. E. E - CORE router will put the IP address of the forwarding FastEthernet interface in the place of the source IP address in the packets. F. F - CORE router will put the MAC address of the forwarding FastEthernet interface in the place of the source MAC address. Correct Answer: QUESTION 13 A network administrator must configure 200 switch ports to accept traffic from only the currently attached host devices. What would be the most efficient way to configure MAC-level security on all these ports? A. A - Visually verify the MAC addresses and then telnet to the switches to enter the switchport-port security mac-address command. B. B - Have end users their MAC addresses. Telnet to the switch to enter the switchport-port security mac-address command. C. C - Use the switchport port-security MAC address sticky command on all the switch ports that have end devices connected to them. D. D - Use show mac-address-table to determine the addresses that are associated with each port and then enter the commands on each switch for MAC address port-security.

23 Correct Answer: C Please read the explanation of question 1 to understand the use of the "switchport port-security MAC address sticky") A and C can be used, but instead of writing all the MAC addresses of the devices associated with each port, we can ask the switch to learn all the MAC addresses of the associated devices automatically by the "switchport port-security mac-address sticky" command which will save much work for the administrator. QUESTION 14 Refer to the exhibit. What does STATUS=ACTIVE refer to in the output of the show frame-relay pvc command? A. A - The PVC is experiencing congestion. B. B - The Frame Relay switch is correctly programmed with the DLCI and is operational. C. C - The router is actively broadcasting to establish a link to the Frame Relay switch. D. D - The router is connected to the local Frame Relay switch, but not to the far end device. Correct Answer: B QUESTION 15 What are two reasons that a network administrator would use access lists? (Choose two.) A. A. to control vty access into a router B. B. to control broadcast traffic through a router C. C. to filter traffic as it passes through a router D. D. to filter traffic that originates from the router E. E. to replace passwords as a line of defense against security incursions Correct Answer: AC

24 QUESTION 16 A single g access point has been configured and installed in the center of a square office. A few wireless users are experiencing slow performance and drops while most users are operating at peak efficiency. What are three likely causes of this problem? (Choose three.) A. A. mismatched TKIP encryption B. B. null SSID C. C. cordless phones D. D. mismatched SSID E. E. metal file cabinets F. F. antenna type or direction Correct Answer: CEF QUESTION 17 Which type of attack is characterized by a flood of packets that are requesting a TCP connection to a server? A. A. denial of service B. B. brute force C. C. reconnaissance D. D. Trojan horse Correct Answer: A QUESTION 18 Refer to the exhibit.

25 The network administrator has created a new VLAN on Switch1 and added host C and host D. The administrator has properly configured switch interfaces FastEthernet0/13 through FastEthernet0/24 to be members of the new VLAN. However, after the network administrator completed the configuration, host A could communicate with host B, but host A could not communicate with host C or host D. Which commands are required to resolve this problem? A. A. Router(config)# interface fastethernet 0/1.3 Router(config-if)# encapsulation dot1q 3 Router(config-if)# ip address B. B. Router(config)# router rip Router(config-router)# network Router(config-router)# network Router(config-router)# network C. C. Switch1# vlan database Switch1(vlan)# vtp v2-mode Switch1(vlan)# vtp domain cisco Switch1(vlan)# vtp server D. D. Switch1(config)# interface fastethernet 0/1 Switch1(config-if)# switchport mode trunk Switch1(config-if)# switchport trunk encapsulation isl Correct Answer: A : Communication between host A and host B on the same VLAN does not need a router but communication between host A and host C (or host D) need a layer 3 device, in this case Router1, which is called a "router on a stick". From the output of Router1, we notice that there is not any route to the new network /24 which host C and host D belong to. Therefore, we need to configure a subinterface for this network. QUESTION 19 A network interface port has collision detection and carrier sensing enabled on a shared twisted pair network. From this statement, what is known about the network interface port?

26 A. A. This is a 10 Mb/s switch port. B. B. This is a 100 Mb/s switch port. C. C. This is an Ethernet port operating at half duplex. D. D. This is an Ethernet port operating at full duplex. E. E. This is a port on a network interface card in a PC. Correct Answer: C QUESTION 20 Which routing protocol by default uses bandwidth and delay as metrics? A. A. RIP B. B. BGP C. C. OSPF D. D. EIGRP Correct Answer: D

27 Question Set 1 QUESTION 1 In order to complete a basic switch configuration, drag each switch IOS command on the left to its purpose on the right A. Correct Answer: A 1) enable 2) configure terminal 3) hostname 4) Interface vlan 1 5) no shutdown 6) ip address 7) ip default-gateway QUESTION 2 Drag and drop the network user application to the appropriate description of its primary use (not all options are used)

28 A. Correct Answer: A 1) web browser 2) instant message 3) 4) database 5) collaboration QUESTION 3 This topology contains 3 routers and 1 switch. Complete the topology. Drag the appropriate device icons to the labeled Device Drag the appropriate connections to the locations labeled Connections. Drag the appropriate IP addresses to the locations labeled IP address (Hint: use the given host addresses and Main router information) To remove a device or connection, drag it away from the topology. Use information gathered from the Main router to complete the configuration of any additional routers. No passwords are required to access the Main router. The config terminal command has been disabled for the HQ router. The router does not require any configuration. Configure each additional router with the following Configure the interfaces with the correct IP address and enable the interfaces. Set the password to allow console access to consolepw Set the password to allow telnet access to telnetpw Set the password to allow privilege mode access to privpw

29 Note: Because routes are not being added to the configurations, you will not be able to ping through the internetwork. All devices have cable autosensing capabilities disabled. All hosts are PC s A. Correct Answer: A

30 Specify appropriate devices and drag them on the "Device" boxes For the device at the bottom-right box, we notice that it has 2 interfaces Fa0/2 and Fa0/4; moreover the link connects the PC on the right with the device on the bottom-right is a straight-through link -> it is a switch The question stated that this topology contains 3 routers and 1 switch -> two other devices are routers (Host D and host E will be automatically added after placing two routers. Click on them to access neighboring routers) Specify appropriate connections between these devices: + The router on the left is connected with the Main router through FastEthernet interfaces: use a crossover cable + The router on the right is connected with the Main router through Serial interfaces: use a serial cable + The router on the right and the Switch: use a straight-through cable + The router on the left and the computer: use a crossover cable (To remember which type of cable you should use, follow these tips: - To connect two serial interfaces of 2 routers we use serial cable - To specify when we use crossover cable or straight-through cable, we should remember: Group 1: Router, Host, Server Group 2: Hub, Switch One device in group 1 + One device in group 2: use straight-through cable Two devices in the same group: use crossover cable For example: we use straight-through cable to connect switch to router, switch to host, hub to host, hub to server... and we use crossover cable to connect switch to switch, switch to hub, router to router, host to host... )

31 Assign appropriate IP addresses for interfaces: From Main router, use show running-config command: (Notice that you may see different IP addresses in the real CCNA exam, the ones shown above are just used for demonstration) From the output we learned that the ip address of Fa0/0 interface of the Main router is /28. This address belongs to a subnetwork which has: Increment: 16 (/28 = or ) Network address: (because 176 = 16 * 11 and 176 < 177) Broadcast address: (because 191 = ) And we can pick up an ip address from the list that belongs to this subnetwork: and assign it to the Fa0/0 interface the router on the left Use the same method for interface Serial0/0 with an ip address of Increment: 16 Network address: (because 160 = 16 * 10 and 160 < 161) Broadcast address: (because 176 = ) -> and we choose for Serial0/0 interface of the router on the right Interface Fa0/1 of the router on the left IP (of the computer on the left) : /28 Increment: 16 Network address: (because 128 = 16 * 8 and 128 < 129) Broadcast address: (because 143 = ) -> we choose from the list Interface Fa0/0 of the router on the right IP (of the computer on the left) : /28 Increment: 16 Network address: (because 224 = 16 * 14 and 224 < 225) Broadcast address: (because 239 = ) -> we choose from the list Configure two routers on the left and right with these commands: Router1 = router on the left Assign appropriate IP addresses to Fa0/0 & Fa0/1 interfaces: Router1>enable Router1#configure terminal Router1(config)#interface fa0/0 Router1(config-if)#ip address Router1(config-if)#no shutdown Router1(config-if)#interface fa0/1

32 Router1(config-if)#ip address Router1(config-if)#no shutdown Set passwords (configure on two routers) + Console password: Router1(config-if)#exit Router1(config)#line console 0 Router1(config-line)#password consolepw Router1(config-line)#login Router1(config-line)#exit + Telnet password: Router1(config)#line vty 0 4 Router1(config-line)#password telnetpw Router1(config-line)#login Router1(config-line)#exit + Privilege mode password: Router1(config)#enable password privpw Save the configuration: Router1(config)#exit Router1#copy running-config startup-config Configure IP addresses of Router2 (router on the right) Router2>enable Router2#configure terminal Router2(config)#interface fa0/0 Router2(config-if)#ip address Router2(config-if)#no shutdown Router2(config-if)#interface serial0/0 Router2(config-if)#ip address Router2(config-if)#no shutdown and set console, telnet and privilege mode passwords for Router2 as we did for Router1, remember to save the configuration when you finished QUESTION 4 The above provides some descriptions, while the below provides some routing protocols. Drag the above items to the proper locations.

33 A. Correct Answer: A Enhanced Interior Gateway Routing Protocol (EIGRP) is a Cisco proprietary routing protocol, so it is vendorspecific. By default, EIGRP internal routes have an administrative distance value of 90. OSPF uses cost as its metric. By default, the cost of an interface is calculated based on bandwidth with the

34 formula cost= /bandwith (in bps). OSPF elects a DR on each broadcast and nonbroadcast multiaccess networks (like Ethernet and Frame Relay environments, respectively). It doesn't elect a DR on point-to-point link (like a serial WAN). QUESTION 5 Construct the command sequence to configure an IP address on a serial interface (not all options are used) A. Correct Answer: A 1) Hub# configure terminal 2) Hub(config)# interface s0/0 3) Hub(config-if)# ip address ) Hub(config-if)# no shutdown 5) Hub(config-if)# description T1 to WAN : One thing interesting in the answers is that the command ip address " " (answer 3) is correct because is not a broadcast address. Let's analyze this case a bit closer:

35 Increment: 4 for the third octet ( = ) First subnetwork range: to Second subnet range: to Therefore and are the broadcast addresses but not So we can assign this address to s0/0 interface. ( Notice that the command Hub(config)# ip address is only correct only if it is in interface mode, which is Hub(config-if)# ) QUESTION 6 Drag the options on the left under the type of switch port that they describe on the right. A. Correct Answer: A

36

37 Question Set 1 QUESTION 1 Central Florida Widgets recently installed a new router in their Apopka office. Complete the network installation by performing the initial router configurations and configuring RIPv2 routing using the router command line interface (CLI) on the Apopka router. Configure the router per the following requirements: Name of the router is Apopka Enable-secret password is cisco10 The password to access user EXEC mode using the console is RouterPass The password to allow telnet access to the router is scan90 IPv4 addresses must be configured as follows: Ethernet network /27 - router has second assignable host address in subnet. Serial network is /28 - router has last assignable host address in the subnet. Interfaces should be enabled. Routing protocol is RIPv2. (Notice: In the real exam the name, passwords, IP addresses and the positions of the assignable host addresses might be different) Instruction: To configure the router (Apopka) click on the console host icon that is connected to a router by a serial console cable (shown in the diagram as a dashed black line). Each of the windows can be minimized by clicking on the [-]. You can also reposition a window by dragging it by the title bar. The "Tab" key and most commands that use the "Control" or "Escape" keys are not supported and are not necessary to complete this simulation. The help command does not display all commands of the help system. A. Correct Answer: A 1) Name the router: Router>enable Router#config terminal Router(config)#hostname Apopka 2) Enable-secret password (cisco10):

38 Apopka(config)#enable secret cisco10 3) Set the console password to RouterPass: Apopka(config)#line console 0 Apopka(config-line)#password RouterPass Apopka(config-line)#login Apopka(config-line)#exit 4) Set the Telnet password to scan90: Apopka(config)#line vty 0 4 Apopka(config-line)#password scan90 Apopka(config-line)#login Apopka(config-line)#exit 5) Configure Ethernet interface (on the right) of router Apopka: The subnet mask of the Ethernet network is 27. From this subnet mask, we can find out the increment by converting it into binary form, that is /27 = Pay more attention to the last bit 1 because it tells us the increment, using the formula: Increment = 2place of the last bit 1 (starts counting from 0,from right to left), in this case increment = 25 = 32. Therefore: Increment: 32 Network address: Broadcast address: (because is the second subnetwork, so the previous IP is the broadcast address of the first subnet). -> The second assignable host address of this subnetwork is /27 Assign the second assignable host address to Fa0/0 interface of Apopka router: Apopka(config)#interface Fa0/0 Apopka(config-if)#ip address Apopka(config-if)#no shutdown Apopka(config-if)#exit 6) Configure Serial interface (on the left) of router Apopka: Using the same method to find out the increment of the Serial network: Serial network /28: Increment: 16 (/28 = ) Network address: (because 8 * 16 = 128 so is also the network address of this subnet) Broadcast address: > The last assignable host address in this subnet is /28. Assign the last assignable host address to S0/0/0 interface of Apopka router: Apopka(config)#interface S0/0/0 (or use interface S0/0 if not successful) Apopka(config-if)#ip address Apopka(config-if)#no shutdown Apopka(config-if)#exit 7) Configure RIP v2 routing protocol:

39 Apopka(config)#router rip Apopka(config-router)#version 2 Apopka(config-router)#network Apopka(config-router)#network Apopka(config-router)#end Save the configuration: Apopka#copy running-config startup-config Finally, you should use the ping command to verify all are working properly! QUESTION 2 As a Cisco technician, you need to know EIGRP protocol very well. Which of the following is true about EIGRP successor routes? (Choose two) A. A - A successor route is used by EIGRP to forward traffic to a destination B. B - Successor routes are stored in the neighbor table following the discovery process C. C - Successor routes are flagged as "active" in the routing table D. D - A successor route may be backed up by a feasible successor route Correct Answer: AD B is not correct because neighbor table only contains a list of directly connected EIGRP routers that have an adjacency with this router, it doesn't contain successor routes. C is not correct because successor routes are not flagged as "active", they are always the best route to reach remote networks and are always used to send packets. A and D are correct because successor route is the best and primary route to a remote network. It is stored in the routing table and topology table. If this route fails, a backup route (called feasible successor route) in the topology table will be used to route traffic to a destination. QUESTION 3 Which three features are of OSPF routing protocol? (Choose three) A. A - Converge quickly B. B - OSPF is a classful routing protocol C. C - Identify the best route by use of cost D. D - Before exchanging routing information, OSPF routers find out neighbors Correct Answer: ACD

40 Question Set 1 QUESTION 1 Refer to the exhibit. The network administrator is in a campus building distant from Building B. WANRouter is hosting a newly installed WAN link on interface S0/0. The new link is not functioning and the administrator needs to determine if the correct cable has been attached to the S0/0 interface. How can the administrator accurately verify the correct cable type on S0/0 in the most efficient manner? A. A. Telnet to WANRouter and execute the command show interfaces S0/0 B. B. Telnet to WANRouter and execute the command show processes S0/0 C. C. Telnet to WANRouter and execute the command show running-configuration D. D. Telnet to WANRouter and execute the command show controller S0/0 E. E. Physically examine the cable between WANRouter S0/0 and the DCE. F. F. Establish a console session on WANRouter and execute the command show interfaces S0/0 Correct Answer: D The show controller command displays the information about the physical interface itself and the type of serial cable plugged into a serial port. In this case, it should be a DTE cable that plugs into a type of data service unit (DSU). For your understanding, below is the output of this command:

41 From the output, we notice that serial 0/0 has a DTE cable and would get its clocking from the DSU.

42 Question Set 1

43 Question Set 1 QUESTION 1 The command frame-relay map ip broadcast was entered on the router. Which of the following statements is true concerning this command? A. A: This command should be executed from the global configuration mode. B. B: The IP address is the local router port used to forward data. C. C: 102 is the remote DLCI that will receive the information. D. D: This command is required for all Frame Relay configurations. E. E: The broadcast option allows packets, such as RIP updates, to be forwarded across the PVC. Correct Answer: E The command frame-relay map ip broadcast means to mapping the distal IP to the local DLCI 102. When the "broadcast" keyword is included, it turns Frame Relay network as a broadcast network, which can forward broadcasts QUESTION 2 Refer to the exhibit. Which statement describes DLCI 17? A. A: DLCI 17 describes the ISDN circuit between R2 and R3. B. B: DLCI 17 describes a PVC on R2. It cannot be used on R3 or R1. C. C: DLCI 17 is the Layer 2 address used by R2 to describe a PVC to R3. D. D: DLCI 17 describes the dial-up circuit from R2 and R3 to the service provider. Correct Answer: C : DLCI stands for Data Link Connection Identifier. DLCI values are used on Frame Relay interfaces to distinguish between different virtual circuits. DLCIs have local significance because the identifier references the point between the local router and the local Frame Relay switch to which the DLCI is connected. QUESTION 3 Which of the following are key characteristics of PPP? (Choose three.)

44 A. A: can be used over analog circuits B. B: maps Layer 2 to Layer 3 address C. C: encapsulates several routed protocols D. D: supports IP only E. E: provides error correction Correct Answer: ACE No more explanation needed, below is some more information about PPP: PPP (Point-to-Point Protocol) allows authentication such as Password Authentication Protocol (PAP) and Challenge Handshake Authentication Protocol (CHAP) and multilink connections (allow several separate physical paths to appear to be one logical path at layer 3) and can be run over asynchronous and synchronous links. QUESTION 4 Which three Layer 2 encapsulation types would be used on a WAN rather than a LAN? (Choose three) A. A: HDLC B. B: Ethernet C. C: Token Ring D. D: PPP E. E: FDDI F. F: Frame Relay Correct Answer: ADF QUESTION 5 What can a network administrator utilize by using PPP Layer 2 encapsulation? (Choose three.) A. A: VLAN support B. B: compression C. C: authentication D. D: sliding windows E. E: multilink support F. F: quality of service Correct Answer: BCE Same as question 4 QUESTION 6

45 The Frame Relay network in the diagram is not functioning properly. What is the cause of the problem? A. A: The Gallant router has the wrong LMI type configured B. B: Inverse ARP is providing the wrong PVC information to the Gallant router C. C: The S3 interface of the Steele router has been configured with the frame-relay encapsulation ietf command D. D: The frame-relay map statement in the Attalla router for the PVC to Steele is not correct E. E: The IP address on the serial interface of the Attalla router is configured incorrectly Correct Answer: D At Attalla router, we find a deleted status but the next map statement indicates an active status, which if for Gallant. Therefore we can deduce the map statement for the PVC from Attalla to Steele is incorrect. Incorrect DLCI assignments that are configured normally shown up as "deleted" in the frame relay maps.

46 Question Set 1 QUESTION 1 Refer to the exhibit. Using the information shown, answer the question All hosts in the networks have been operational for several hours when the DHCP server goes down. What happens to the hosts that have obtained service from the DHCP server? A. A - The hosts will not be able to communicate with any other hosts. B. B - The hosts will continue to communicate normally for a period of time. C. C - The hosts will be able to communicate with hosts outsides their own network D. D - The hosts will only be able to communicate with other hosts by IP address not by hostname Correct Answer: B DHCP often uses dynamic allocation mechanism to save IP addresses, which assigns an IP address to a client for a limited period of time. So when the DHCP server goes down, that client can still use the allocated IP address for a period of time QUESTION 2 What is the purpose of the DHCP server? A. A - to provide storage for B. B - to translate URLs to IP addresses C. C - to translate IPv4 addresses to MAC addresses D. D - to provide an IP configuration information to hosts Correct Answer: D The main purpose of the DHCP server is to provide IP configuration parameters to hosts such as the default gateway, domain name, Domain Name System (DNS) server...

47 QUESTION 3 How is the message sent from a PC2 when is first powers on and attempts to contact the DHCP Server? A. A - Layer 3 unicast B. B - Layer 3 broadcast C. C - Layer 3 multicast D. D - Without any Layer 3 encapsulation Correct Answer: B When a client boots up for the first time, it transmits a DHCPDISCOVER message on its local physical subnet. Because the client has no way of knowing the subnet to which it belongs, the DHCPDISCOVER is an allsubnets broadcast (destination IP address of , which is a layer 3 broadcast address). The client does not have a configured IP address, so the source IP address of is used.

48 Question Set 1 QUESTION 1 Refer to the exhibit. The goal of this network design is to provide the most efficient use of IP address space in a network expansion. Each circle defines a network segment and the number of users required on that segment. An IP subnetwork number and default gateway address are shown for each segment. What are three problems with the network design as shown? (Choose three) A. A - Interface fa0/3 has an IP address that overlaps with network /30. B. B - Interface fa0/1 has an invalid IP address for the subnet on which it resides. C. C - Interface fa0/2 has an invalid IP address for the subnet on which it resides. D. D - Network /25 requires more user address space. E. E - Network /25 requires more user address space. F. F - The IP subnet /30 is invalid for a segment with a single server. Correct Answer: ABD QUESTION 2 If an ethernet port on a router was assigned an IP address of /20, what is the maximum number of hosts allowed on this subnet?

49 A. A B. B C. C D. D E. E Correct Answer: C QUESTION 3 Refer to the exhibit. The internetwork is using subnets of the address with a subnet mask of The routing protocol in use is RIP version 2. Which address could be assigned to the FastEthernet interface on RouterA? A. A B. B C. C D. D E. E Correct Answer: D QUESTION 4 Refer to the exhibit. HostA cannot ping HostB. Assuming routing is properly configured, what could be the cause of this problem?

50 A. A - HostA is not on the same subnet as its default gateway. B. B - The address of SwitchA is a subnet address. C. C - The Fa0/0 interface on RouterA is on a subnet that can't be used. D. D - The serial interfaces of the routers are not on the same subnet. E. E - The Fa0/0 interface on RouterB is using a broadcast address. Correct Answer: D QUESTION 5 Refer to the exhibit. The lakeside Company has the internetwork in the exhibit. The Administrator would like to reduce the size of the routing table to the Central Router. Which partial routing table entry in the Central router represents a route summary that represents the LANS in Phoenix but no additional subnets?

51 A /22 is subnetted, 1 subnet D [90/ ] via w0d, serial 0/1 B /28 is subnetted, 1 subnet D [90/ ] via w0d, serial 0/1 C /30 is subnetted, 1 subnet D [90/ ] via w0d, serial 0/1 D /22 is subnetted, 1 subnet D [90/ ] via w0d, serial 0/1 E /28 is subnetted, 1 subnet D [90/ ] via w0d, serial 0/1 F /30 is subnetted, 1 subnet D [90/ ] via w0d, serial 0/1 Correct Answer: D QUESTION 6 Refer to the exhibit. HostA cannot ping HostB. Assuming routing is properly configured. what could be the cause of this problem?

52 A. A - HostA is not on the same subnet as its default gateway. B. B - The address of SwitchA is a subnet address. C. C - The Fa0/0 interface on RouterA is on a subnet that can't be used. D. D - The serial interfaces of the routers are not on the same subnet. E. E - The Fa0/0 interface on Routers is using a broadcast address. Correct Answer: D QUESTION 7 Refer to the exhibit. The routers are running RIPv2. Which addressing scheme would satisfy the needs of this network yet waste fewest addresses? A. Network 1: /26 Network 2: /26 Network 3: /26 Serial link 1: /24 Serial link 2: /24 B. Network 1: /26 Network 2: /28