Certkiller 4A0-M02 140q

Transcription

1 Certkiller 4A0-M02 140q Number: 4A0-M02 Passing Score: 800 Time Limit: 120 min File Version: A0-M02 Alcatel-Lucent Mobile Gateways for the LTE Evolved Packet Core Added s and Exhibits most of the questions.

2 Exam A QUESTION 1 Which of the following statements is FALSE regarding the enodeb? A. The enodebs maybeinterconnectteidwith each other via anx2 interface. B. The enodeb is an element of the EPC core. C. The enodebs areconnectedto the EPC core via the S1 interface. D. During an IMSI attach, the enodeb selects an MME to service the UE. E. The enodeb performs the compression and encryption of the user data stream. Correct Answer: B /Reference: : QUESTION 2 Which of the following statements most accurately describes the MME? A. The MME selects the SGW and the PGW for a given UE. B. The MME is responsible for the bearer management. C. The MME communicates with both the E-UTRAN and the EPC via GTP-C tunnels. D. The MME performs the user authentication and authorization using the information provided by the HSS E. All of the above answers are correct. F. Only answers A, B and D are correct. Correct Answer: F /Reference: : QUESTION 3 A UE needs to get an IP address before it can communicate to any PDN over the LTE network. Which of the following statements are FALSE regarding the process of the IP address allocation? (Choose two)

3 A. A PGW may obtain an IP address from a RADIUS server and assign it to the UE. B. A PGW may assign the IP address from its local address pools. C. An SGW may obtain a static IP address from the HSS server and assign it to the UE. D. An SGW may obtain an IP address from a RADIUS server and assign it to the UE. E. A PGW may obtain an IP address from a DHCP server and assign it to the UE. Correct Answer: CD /Reference: : QUESTION 4 Which of the following statements is TRUE regarding the IP connectivity between a UE and a PDN? A. A UE gets an IPv4 address and/or an IPv6 prefix per APN. B. A PGW forwards the UE's IP packets to the PDN based on the address of the PDN server. C. When a UE sends an IP packet to a PDN over the EPC core, the enodeb forwards theencapsulatedpacket to the SGW by looking into its IP routing table to determine how to reach the PDN server. D. The SGW forwards the UE's IP packets to the PGW based on the address of the PDN server. E. Only answers C and D are correct. F. Only answers A and B are correct. Correct Answer: F /Reference: : QUESTION 5 In a 3G network, which of the following is used to build a PDP context between a UE and the GGSN when a direct tunnel is not used?

4 A. An end-to-end GTP tunnel between the UE and the GGSN. B. A Radio Access Bearer between the UE and the NodeB and a GTP tunnel between the NodeB and the GGSN. C. A Radio Access Bearer between the UE and the SGSN and a GTP tunnel between the SGSN and the GGSN. D. A Radio Access Bearer between the UE and the SGSN. E. None of the above answers are correct. Correct Answer: C /Reference: : QUESTION 6 Which of the following statements is FALSE regarding the EPS bearers? A. The default bearer isinitiatedby either the UE or the PCRF. B. The default bearer is always the first bearer established to an APN. C. An AF server may initiate adedicatedbearer to a UE. D. EPS bearers that connect a given UE to a single PGW may use different IP subnets. E. The default bearer remains active throughout the lifetime of the APN connection. Correct Answer: A /Reference: : QUESTION 7

5 Which of the following LTE interfaces are used for the communication of user data? (Choose one best answer) A. The S1-MME interface and the S11 interface. B. The S1-U interface. C. The S5 interface. D. The S1-U interface, the S5 interface and the LTE-Uu interface. E. Only answers A, B and C are correct. F. Only answers B and C are correct. Correct Answer: D /Reference: : QUESTION 8 The S5 is the interface used for the communication between the SGW and the PGW. Which of the following transport protocols is used by this interface? A. GTP/TCP B. GTP/UDP C. GTP/IP D. GTP/SCTP E. None of the above answers are correct Correct Answer: B /Reference: : QUESTION 9 Based on the information shown in the exhibit, which of the following is the PLMN ID?

6 A. 302 B. 720 C D E F Correct Answer: F /Reference: :

7 QUESTION 10 Which of the following statements is FALSE regarding the Tracking Area (TA)? A. A TA is a set of enodebs that are defined by a UE itself. B. A TA is the smallest geographical area in which a UE can roam without performing a Tracking Area Update (TAU) other than periodic TAU as required. C. A Tracking Area Identity (TAI) is used to identify each tracking area. D. The Tracking Area Identity (TAI) is assigned by the service provider. E. One TA may be served by one or more than one MME. Correct Answer: A /Reference: : QUESTION 11 Which of the following statements is FALSE regarding the UE network attachment procedure? A. The UE is served by an enodeb. B. The enodeb selects one MME to serve the UE. C. The MME selects one SGW to serve the UE. D. The SGW selects one PGW to serve the UE E. The PGW selects one PCRF server if required. Correct Answer: D /Reference: : QUESTION 12 Which of the following statements is FALSE regarding the UE paging process? A. The SGW performs downlink data buffering while the S1 bearer is being established. B. The SGW initiates the paging messages towards the UE. C. The PGW is not aware of the paging process.

8 D. The UE initiates the service request procedure once it receives the paging message. E. The paging procedure is controlled by the MME. Correct Answer: B /Reference: : QUESTION 13 Based on the information shown in the exhibit, when the SGW receives an IP packet from the UE, which of the following is the GTP TEID value expected to be received in the GTP packet header?

9 A. 0xd05025 B. 0x4b00805 C. 0x21 D. 0x4b00825 E. None of the above answers are correct. Correct Answer: D /Reference: : QUESTION 14 Which of the following interfaces is not using the GTP-C protocol? A. The X2 interface. B. The S1-U interface. C. The S4 interface. D. The S5 interface. E. The SGi interface. Correct Answer: E /Reference: : QUESTION 15 Which of the following most accurately identifies a GTP tunnel on the Alcatel-Lucent 7750 MG by default? A. ATEID B. The System IP address C. A UDP port number D. ATEIDand the System IP address E. ATEID, the System IP address and a UDP port number

10 Correct Answer: E /Reference: : QUESTION 16 There is an active GTP path between an Alcatel-Lucent SGW and an Alcatel-Lucent PGW, On the SGW. Which of the following CLI commands is used to check the "Restart Count" value of the PGW? A. show mobile-gateway serving ref-point-peers s5 B. show mobile-gateway serving ref-point-stats s5 C. show mobile-gateway serving bearer-stats s5 D. show mobile-gateway serving path-mgmt-stats s5 E. None of the above answers are correct. Correct Answer: D /Reference: : QUESTION 17 An Alcatel-Lucent SGW is only connected to an Alcatel-Lucent PGW. Based on the information shown in the exhibit, how many GTP-C tunnels are established between the SGW and the PGW?

11 A. 1 B. 2 C. 3 D. 4 E. 6 Correct Answer: E /Reference: : QUESTION 18 Which of the following statements most accurately describes the Diameter protocol? A. The Diameter is a peer-to-peer protocol that uses the TCP or SCTP as the transport protocol. B. A Diameter peer could act as a Diameter client or a Diameter server to its remote peer. C. The Alcatel-Lucent 7750 PGW acts as a Diameter client to the PCRF server via the Gx interface. D. The Diameter protocol uses TCP and SCTP port number E. All of the above answers are correct. F. Only answers A and B are correct.

12 Correct Answer: E /Reference: : QUESTION 19 Which of the following most accurately describes the messages used to manage a Diameter connection path? A. The Capabilities-Exchange message B. The Device-Watchdog message C. The Credit-Control message D. The Disconnect-Peer message E. All of the above answers are correct F. Only answers A, B and D are correct Correct Answer: F /Reference: : QUESTION 20 Which of the following statements is FALSE regarding the S1-MME interface? A. It is the control plane interface between the E-UTRAN and the MME. B. It is used to signal the TEIDs for the S1 bearers between the enodeb and the SGW. C. The enodeb receives the Paging messages over the S1-MME interface. D. It is used for the management of the Radio Access Bearers. E. It is based on the IP/UDP protocols. Correct Answer: E /Reference:

13 : QUESTION 21 Which of the following statements is TRUE when the Alcatel-Lucent 7750 MG receives a GTP packet that has a zero TEID? A. The ingress IOM forwards the packet directly to the MG-ISM module for further processing. B. The ingress IOM drops the packet. C. The ingress IOM forwards the packet to the CPM for further processing. D. The Alcatel-Lucent 7750 MG forwards the packet to its IP destination by looking into the local IP routing table. E. None of the above answers are correct. Correct Answer: C /Reference: : QUESTION 22 Which of the following statements is FALSE regarding the MG-ISM module on an Alcatel- Lucent 7750 MG? A. The MG-ISM module implements the PCC rules for the EPS bearers. B. The MG-ISM module can be configured as a SGW/SGSN or a PGW/GGSN. C. The MG-ISM module enforces the QoS rules for the EPS bearers. D. On an Alcatel-Lucent 7750 MG, two MG-ISM modules can be configured as 1+1 redundant. E. The switchover from the active MG-ISM card to the standby MG-ISM card has no impact on other EPC nodes Correct Answer: B /Reference: : QUESTION 23 Based on the information shown in the exhibit, when the SGW sends a downlink user data packet to the UE, which of the following is the source IP address expected in the IP packet? A

14 B C D E. None of the above answers are correct Correct Answer: D /Reference: : QUESTION 24 Based on the information shown in the exhibit, which of the following is the time interval used by the SGW to send out an "Echo Request" message over the GTP interface? A. 3 seconds B. 5 seconds C. 6 seconds D. 60 seconds E. 90 seconds Correct Answer: D

15 /Reference: : QUESTION 25 On an Alcatel-Lucent 7750 PGW, which of the following is the CLI context where you can specify the IP address and port number of a PCRF server? A. Under the Diameter profile context. B. Under the Diameter Peer profile context. C. Under the Gx interface context. D. Under the APN context. E. None of the above answers are correct. Correct Answer: B /Reference: : QUESTION 26 Based on the information shown in the exhibit, which of the following is TRUE when the PGW receives a "Create Session Request" with the "PDNTYPE" set to IPv4?

16 A. The PGW tries to allocate an IP address from the subnet " /16" and assigns it to the UE. B. The PGW tries to allocate an IP address from the subnet "3FFE::/48" and assigns it to the UE. C. The "Create Session Request" isrejectedby the PGW. D. There is insufficient information to answer this question. Correct Answer: C /Reference: : QUESTION 27 Based on the information shown in the exhibit, which of the following is TRUE when the PGW receives a "Create Session Request" with the "APN Restriction" set to "Private2"? Assume everything else is in working condition.

17 A. The "Create Session Request" isrejectedby the PGW and no bearer iscreated. B. The "Create Session Request" isacceptedby the PGW and the bearer iscreatedsuccessfully. C. The APN cannot be configured with an "APN Restriction" value of "any". D. The "Create Session Request" cannot have an "APN Restriction" value of "Private2. E. None of the above answers are correct. Correct Answer: B /Reference: : QUESTION 28 On the Alcatel-Lucent 7750 PGW, which of the following is the default setting of the APN "selection-mode"? A. ms-provided-apn B. network-provided-apn C. subscribed-apn D. virtual-apn E. None of the above answers are correct

18 Correct Answer: C /Reference: : QUESTION 29 Which of the following messages are exchanged between the MME and the SGW during the UE attachment procedure? (Choose two) A. Create Session Request / Create Session Response B. Credit Control Request / Credit Control Answer C. Attach Request/Attach Accept D. Update Bearer Request / Update Bearer Response E. Modify Bearer Request / Modify Bearer Response Correct Answer: AE /Reference: : QUESTION 30 During the establishment of a default bearer, which of the following statements are TRUE regarding the TEID-U assigned by the enodeb to the S1-U tunnel? (Choose two) A. The enodeb includes this TEID-U value in the Create Session Request message sent to the SGW over the S1 interface. B. The enodeb includes this TEID-U value in the Attach Request message sent to the MME over the S1-MME interface. C. The MME includes this TEID-U value in the Create Session Request message sent to the SGW over the S11 interface. D. The MME includes this TEID-U value in the Modify Bearer Request message sent to the SGW over the S11 interface. E. The enodeb includes this TEID-U value in the Attach Complete message sent to the MME over the S1-MME interface. F. The enodeb includes this TEID-U value in the Modify Bearer Request message sent to the SGW over the S1 interface. Correct Answer: DE

19 /Reference: : QUESTION 31 On Alcatel-Lucent 7750 PGW, which of the following CLI commands can be used to check the IP addresses assigned to a particular UE? A. Show mobile-gateway pdn pdn-context B. Show mobile-gateway serving pdn-context imsi <imsi-number> detail C. Show mobile-gateway pdn ue-context D. Show mobile-gateway pdn ue-context imsi <ims-_nnumber> detail E. Show mobile-gateway pdn bearer-context F. Show mobile-gateway pdn bearer-context imsi <imsi-number> detail Correct Answer: A /Reference: : QUESTION 32 How many S11 GTP-C tunnels are established for a UE having: - One default bearer to APN1, and - One dedicated bearer to APN1, and - One default bearer to APN2, and - Two dedicated bearers to APN2? A. One B. Two C. Three D. Four E. Five Correct Answer: A /Reference:

20 : QUESTION 33 Based on the information shown in the exhibit, and assuming this is the only bearer present, what is the action taken by the SGW when: - The SGW receives a GTP packet over its S5 interface, and - The TEID value in the GTP header is set to 0x802d25? A. The packet is forwarded to the enodeb B. The packet is buffered. C. The packet is dropped. D. The packet is forwarded to the MME. Correct Answer: C

21 /Reference: : QUESTION NO 34 Based on the information shown in the exhibit, what is the action taken by the SGW when: -TheSGW receives a GTP packet over its S5 interface, and -TheTEIDvalue in the GTP header is set to 0xd06c05? C:\Documents and Settings\user-nwz\Desktop\1.JPG A.The packet is forwarded to the enodeb. B.The packet is buffered. C.The packet is dropped. D.The packet is forwarded to the MME. Answer:B

22 QUESTION 34 Based on the information shown in the exhibit, which procedure has been executed on the SGW? A. UE Triggered Service Request procedure B. Network Triggered Service Request procedure C. UEInitiatedDedicatedBearer Activation procedure

23 D. NetworkInitiatedDedicatedBearer Activation procedure Correct Answer: B /Reference: : QUESTION 35 Based on the information shown in the exhibit, what type of handover is performed when the UE moves from enodeb2 to enodeb4?

24 A. X2-based handover without SGW relocation B. X2-based handover with SGW relocation C. X2-based handover with MME relocation D. S1-based handover with SGW relocation E. S1-based handover with MME relocation Correct Answer: B

25 /Reference: : QUESTION 36 Which entity decides when a handover procedure needs to be performed? A. The UE. B. The source enodeb. C. The target enodeb. D. The MME. E. The SGW. Correct Answer: B /Reference: : QUESTION 37 Which network entities assign TEIDs to the indirect data tunnel used during an S1-based handover with no SGW relocation? A. The source enodeb and the SGW. B. The source enodeb, the SGW, and the target enodeb. C. The SGW and the target enodeb. D. The source enodeb and the target enodeb. Correct Answer: C /Reference: : QUESTION 38 Based on the information shown in the exhibit, what is the TEID value 0x37 used for?

26 A. This TEID value is used by the source enodeb when sending downlink data traffic to the target enodeb. B. This TEID value is used by the target enodeb when sending uplink data traffic to the SGW. C. This TEID value is used by the source enodeb when sending downlink data traffic to the SGW. D. This TEID value is used by the SGW when sending downlink data traffic to the source enodeb. E. This TEID value is used by the SGW when sending downlink data traffic to the target enodeb. Correct Answer: E /Reference: : QUESTION 39 During an S1-based handover with MME relocation, which network entity requests the creation of an indirect data forwarding tunnel by sending a "Create Indirect Data Forwarding Tunnel Request" message to the SGW? A. The source MME.

27 B. The target MME. C. The source enodeb. D. The target enodeb. Correct Answer: A /Reference: : QUESTION 40 During a UE detach procedure, which commands are exchanged over the gx interface? A. Delete Session Request / Delete Session Answer B. Credit Control Request Terminate/Credit Control Answer Terminate C. Release Session Request / Release Session Answer D. Credit Control Request Release / Credit Control Answer Release Correct Answer: B /Reference: : QUESTION 41 Which of the following statements are TRUE regarding the Predefined PCC rules? (Choose two) A. The Predefined PCC rules are preconfigured on the PCRF. B. The Predefined PCC rules are preconfigured on the PCEF. C. The Predefined PCC rules are preconfigured on the MME. D. The Predefined PCC rules areactivatedor deactivatedby the PCEF at any time. E. The Predefined PCC rules areactivatedor deactivatedby the PCRF at anytime. Correct Answer: BE

28 /Reference: : QUESTION 42 Assume that dynamic PCC rules are used on the PGW. When the UE sends a request to establish a dedicated bearer, which of the following messages are exchanged between the PCRF and the PCEF? A. The RAR/RAA messages. B. The CSR/CSResp messages. C. The CCR/CCA messages. D. The CSR/CSResp and the CCR/CCA messages. E. The CSR/CSResp and the RAR/RAA messages Correct Answer: C /Reference: : QUESTION 43 A dedicated bearer 6 has a total of six SDF filters. Based on the information shown in the exhibit, which of the following is the right order to apply the filters to the downlink traffic?

29 A. The filters: 0 (first), 1, 2, 3, 4, 5 (last). B. The filters: 2 (first), 3, 0, 1, 4, 5 (last). C. The filters: 0 (first), 2, 4 (last). D. The filters: 3 (first), 5, 1 (last).

30 E. The filters: 0 (first), 4, 2 (last). F. The filters: 2 (first), 4, 0 (last). Correct Answer: F /Reference: : QUESTION 44 Which of the following statements are TRUE regarding the SDF templates /filters? (Choose three) A. An SDF filter can identify an SDF flow by matching the information in the IP 5-tuple and the Layer-7 application B. One SDF template can have only one SDF filter for each direction. C. Onededicatedbearer can have more than one SDF template and multiple SDF filters. D. Onededicatedbearer can have only one SDF template. E. One SDF template can have multiple SDF filters for each direction, F. Onededicatedbearer can have more than one SDF template. Correct Answer: CEF /Reference: : QUESTION 45 A UE is sending data to its FTP server over the EPC core with the TCP port 20. Based on the information shown in the exhibit, which of the following bearer(s) will be used for the uplink FTP flow?

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32 A. The bearer # 5 will be used for the FTP flow. B. The bearer #6 will be used for the FTP flow. C. The bearer #7 will be used for the FTP flow. D. Both bearer # 5 and bearer # 6 will be used for the FTP flow. E. Both bearer #5 and bearer #7 will be used for the FTP flow. Correct Answer: C /Reference: : QUESTION 46 Which of the following statements is FALSE regarding the EPC QoS parameters? A. The Guaranteed Bit Rate (GBR) is the traffic rateexpectedto be provided by a GBR bearer. B. The MBR is the maximum bit rateexpectedto be provided by a GBR bearer. C. The PGW enforces the APN-AMBR in the DL direction. D. The APN-AMBR limits the traffic rate on a per bearer basis. E. The APN-AMBR in the UL direction is enforced in the UE and additionally in the PGW. Correct Answer: D /Reference: : QUESTION 47 Which of the following parameters best describes the rate-limiting associated with a Non-GBR bearer? A. The GBR and the MBR B. The APN-AMBR C. The MBR D. The UE-AMBR E. The APN-AMBR and the UE-AMBR

33 Correct Answer: E /Reference: : QUESTION 48 Which of the following statements is FALSE regarding the QCI / ARP? A. An EPS bearer may beassociatedwith more than one QCI value. B. A new QCI policy can be defined on the Alcatel-Lucent 7750 MG to overwrite the default one. C. A default QCI/ARP policy is predefined on the Alcatel-Lucent 7750 MG and cannot be modified. D. A default bearercannotbeassociatedwith a QCI value of 4. E. The QCI has 9 classes and the ARP has 15 levels. Correct Answer: A /Reference: : QUESTION 49 Based on the information shown in the exhibit, which of the following is the MBR/GBR value for Bearer 6 in the DL direction?

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35 A /10000 kbps B /20000 kbps C /30000 kbps D /40000 kbps E. None of the above answers are correct. Correct Answer: C /Reference: : QUESTION 50 A UE is sending best-effort (BE) IP traffic to a PDN server over the EPC core. Based on the information shown in the exhibit, what is the DSCP value of traffic egressing the SGi interface of the PGW to the PDN server?

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37 A. BE B. EF C. AF21 D. NC E. None of the above answers are correct. Correct Answer: A /Reference: : QUESTION 51 On the Alcatel-Lucent 7750 PGW, which of the following CLI commands is used to check the contents of the SDF filters enforced on the PGW for a particular UE? A. Show mobile-gateway pdn pdn-context B. Show mobile-gateway pdn pdn-context imsi <imsi-number> detail C. Show mobile-gateway pdn bearer-context D. Show mobile-gateway pdn bearer-context imsi <imsi-number> detail E. Show mobile-gateway pdn ue-context F. Show mobile-gateway pdn ue-context imsi <imsi-number> detail Correct Answer: D /Reference: : QUESTION 52 Which of the following does not apply during the CPM selection of an MG-ISM card? A. The CPM load balances amongst all configured MG-ISM groups. B. The CPM load balances based on the number of sessions currently handled by each MG-ISM group C. All sessions established for a given UE are handled by the same MG-ISM group. D. TheselectedMG-ISM card is responsible for bearer management andteidassignment. E. All of the above statements apply.

38 Correct Answer: A /Reference: : QUESTION 53 Which of the following statements is FALSE regarding the support of MG-ISM redundancy on an Alcatel-Lucent 7750 MG? A. MG-ISM redundancy issupportedon Alcatel-Lucent 7750 SGW. B. MG-ISM redundancy issupportedon Alcatel-Lucent 7750 PGW. C. MG-ISM 1+1 redundancy model issupportedon Alcatel-Lucent 7750 MG. D. MG-ISM one-to-many redundancy model issupportedon Alcatel-Lucent 7750 MG. E. None of the above statements are false. Correct Answer: D /Reference: : QUESTION 54 Which of the following statements is FALSE regarding the keep alive messages exchanged between the CPM card and an MG-ISM card? A. The keep alive messages are exchanged between the CPM card and the active MG-ISM card. B. The keep alive messages are exchanged between the CPM card and the standby MG-ISM card C. The keep alive messages are exchanged between the active and standby MG-ISM cards. D. The CPM card considers the MG-ISM card down if it misses 3 keep alive messages. Correct Answer: C /Reference: :

39 QUESTION 55 On Alcatel-Lucent 7750 SGW, which of the following statements is FALSE regarding the debugging of a given IMSI? A. The debugging allows the operator to analyze information and messagesrelatedto a given IMSI in real-time. B. The APN value must be specified in the debug command. C. The output may be filtered per APN or per reference point. D. The debugging supports three levels of tracing detail. E. None of the above statements are false. Correct Answer: B /Reference: : QUESTION 56 Based on the information shown in the exhibit, which of the following statements is FALSE? A. Gx commands are not being exchanged with the PCRF peer. B. EPS bearers can be successfully established to this PGW. C. The TCP connection to the PCRF peer is not established.

40 D. Watchdog messages are not being exchanged with the PCRF peer. E. None of the above statements are false. Correct Answer: E /Reference: : QUESTION 57 On Alcatel-Lucent 7750 PGW, which of the following CLI commands is used to verify the EPS procedures being performed on the mobile gateway? A. Show mobile-gateway pdn call-flow-statistics B. Show mobile gateway pdn call-flows C. Show mobile-gateway pdn call-flow-stats D. Show mobile-gateway pdn 1 call-flow-statistics Correct Answer: C /Reference: : QUESTION 58 Which of the following statements is FALSE regarding the configuration of Key Performance Indicator/Key Capacity Indicator (KPI/KCI) on an Alcatel-Lucent 7750 MG? A. The mobile-gateway instance must be shutdown before enabling the stats collection B. A log file must be configured. C. An accounting policy must be configured. D. Only one record can be configured in a policy. E. Only one policy can be assigned to a serving/pdn instance. F. None of the above statements are false. Correct Answer: F

41 /Reference: : QUESTION 59 Based on the information shown in the exhibit, which of the following statements is FALSE? A. The collection interval is set to 30 minutes. B. The number of active bearers at the end of this interval is 307 C. The stats arecollectedfrom MG-ISM card 5. D. The number of idle users at the end of this interval is 10 E. None of the above statements are false.

42 Correct Answer: E /Reference: : QUESTION 60 In a 3G network, which of the following statements most accurately describes the user data plane between a UE and the GGSN when a direct tunnel is not used? A. A Radio Access Bearer between the UE and the NodeB, a GTP tunnel between the NodeB and the SGSN, and another GTP tunnel between the SGSN and the GGSN. B. A Radio Access Bearer between the UE and the SGSN and a GTP tunnel between the SGSN and the GGSN. C. A GTP tunnel between the UE and the GGSN. D. A Radio Access Bearer between the UE and the RNC, a GTP tunnel between the RNC and the SGSN, and another GTP tunnel between the SGSN and the GGSN. E. None of the above answers are correct. Correct Answer: B /Reference: : QUESTION 61 Which of the following LTE interfaces are used for the communication of control messages? (Choose one best answer) A. The S1-MME interface and the S11 interface. B. The S5 interface. C. The Gx interface. D. The LTE-Uu interface and the Rx interface. E. All of the above answers are correct. F. Only answers A, B and C are correct. Correct Answer: E

43 /Reference: : QUESTION 62 The S1-MME is the interface used for the communication between the enodeb and the MME. Which of the following transport protocols is used by this interface? A. The Transmission Control Protocol (TCP) B. The User Datagram Protocol (UDP) C. The TCP or the UDP D. The Stream Control Transmission Protocol (SCTP) E. None of the above answers are correct Correct Answer: D /Reference: : QUESTION 63 Based on the information shown in the exhibit, how many mobile subscribers is the PGW currently serving?

44 A. 1 B. 2 C. 3 D. 5 E. 6 F. Unable to determine based on the provided information. Correct Answer: C /Reference: : QUESTION 64 Based on the information shown in the exhibit, when the SGW sends an uplink user IP packet to the PGW, which of the following is the GTP TEID value expected in the GTP packet header?

45 A. 0xd05425 B. 0x4f00805

46 C. 0x21 D. 0x4f00825 E. None of the above answers are correct Correct Answer: A /Reference: : QUESTION 65 Which of the following is used to carry the GTP Path Management message "Echo Request"? A. TheGTPv1 protocol. B. The GTPv2 protocol. C. The TCP protocol. D. TheGTPv1 protocol or the GTPv2 protocol. E. None of the above answers are correct. Correct Answer: D /Reference: : QUESTION 66 Which of the following are Diameter-based interfaces? A. The RF and the S10 interfaces. B. The RF and the Gx interfaces. C. The Rx and the S4 interfaces. D. The Rx and the SGi interfaces. E. The S9 and the S11 interfaces. Correct Answer: B

47 /Reference: : QUESTION 67 Which of the following statements is FALSE regarding the X2 interface? A. It is the interface used to connect two enodebs. B. It provides some mobility management functions between two enodebs. C. The X2-AP is the application layer signaling protocol for the X2 interface. D. It is never used to transport user data packets. E. It is an IP-based interface. Correct Answer: D /Reference: : QUESTION 68 Which of the following statements is TRUE when the Alcatel-Lucent 7750 MG receives a GTP packet that has a valid TEID? A. The ingress IOM forwards the packet directly to the MG-ISM module for further processing. B. The ingress IOM drops the packet. C. The ingress IOM forwards the packet to the CPM for further processing. D. The Alcatel-Lucent 7750 MG forwards the packet to its IP destination by looking into the local IP routing table. E. None of the above answers are correct. Correct Answer: A /Reference: : QUESTION 69 Based on the information shown in the exhibit, which of the following is the time interval used by the SGW to retransmit a GTP signaling message?

48 A. 3 seconds B. 5 seconds C. 6 seconds D. 60 seconds E. 90 seconds Correct Answer: B /Reference: : QUESTION 70 A PGW may use various methods to assign an IP address to a UE. Which of the following methods is supported on Alcatel-Lucent 7750 PGW? (Choose the best answer)

49 A. local-pool B. hss-static C. Radius / Diameter server. D. PCRF server E. All of the above answers are correct F. Only answers A, B and C are correct Correct Answer: F /Reference: : QUESTION 71 Based on the information shown in the exhibit, which of the following is TRUE when the PGW receives a "Create Session Request" with the "APN Restriction" set to "Private1"? Assume everything else is in working condition.

50 A. The "Create Session Request" is rejected by the PGW and no bearer is created. B. The "Create Session Request" is accepted by the PGW and the bearer is created successfully. C. The APN cannot be configured with an "APN Restriction" value of "Private1". D. The "Create Session Request" cannot have an "APN Restriction" value of "Private1". E. None of the above answers are correct. Correct Answer: A /Reference: : QUESTION 72 Which of the following messages are exchanged between the PGW and the PCRF during the UE attachment procedure?

51 A. Authorization Control Request/ Authorization Control Answer B. Credit Control Request / Credit Control Answer C. Create Session Request/ Create Session Answer D. Attach Request/Attach Answer Correct Answer: B /Reference: : QUESTION 73 After a UE attachment procedure, which GTP-U tunnels are established for the UE? A. S1-MME GTP-U tunnel and S5 GTP-U tunnel. B. S1-U GTP-U tunnel and S5 GTP-U tunnel. C. S1-U GTP-U tunnel. S5 GTP-U tunnel, and Gx GTP-U tunnel. D. S1-U GTP-U tunnel and Gx GTP-U tunnel. E. No GTP-U tunnels are established. Correct Answer: B /Reference: : QUESTION 74 Which of the following resources are freed when a registered UE goes idle? (Choose 2) A. S1-MME signaling connection B. S11GTP-C tunnel C. S1 GTP-U tunnel D. S5 GTP-C tunnel E. S5 GTP-U tunnel

52 Correct Answer: AC /Reference: : QUESTION 75 During a service request procedure, which message is sent by the MME over the S11 interface to provide the SGW with the enodeb address and enodeb S1-U TEID? A. Downlink Data Notification B. Downlink Data Notification Ack C. Modify Bearer Request D. Modify Bearer Response Correct Answer: C /Reference: : QUESTION 76 On Alcatel-Lucent 7750 SGW, which of the following CLI commands can be used to check the number of times a handover procedure has been performed for a particular UE? A. Show mobile-gateway serving call-flow-stats B. Show mobile-gateway serving pdn-context imsi <imsi-number> detail C. Show mobile-gateway serving ue-context imsi <imsi-number> detail D. Show mobile-gateway serving bearer-context imsi <imsi-number> detail E. Show mobile-gateway serving ref-point-stats s11 Correct Answer: C /Reference: :

53 QUESTION 77 Which of the following statements is FALSE regarding the S1-based handover? A. The SGW may be relocated. B. The MME may be relocated. C. Direct data forwarding via the X2 interface may be used. D. Indirect data forwarding via the SGW may be used. E. None of the above statements are false. Correct Answer: E /Reference: : QUESTION 78 Based on the information shown in the exhibit, what is the TEID value 0xd06015 used for?

54 A. This TEID value is used by the source enodeb when sending uplink data traffic to the SGW. B. This TEID value is used by the target enodeb when sending uplink data traffic to the SGW. C. This TEID value is used by the source enodeb when sending downlink data traffic back to the SGW. D. This TEID value is used by the SGW when sending downlink data traffic to the source enodeb. E. This TEID value is used by the SGW when sending downlink data traffic to the target enodeb. Correct Answer: C /Reference: :

55 QUESTION 79 During a UE detach procedure, which commands are exchanged over the S5 interface? A. Delete Session Request / Delete Session Response B. Terminate Session Request/Terminate Session Response C. Release Session Request / Release Session Response D. Delete Bearer Request/Delete Bearer Response Correct Answer: A /Reference: : QUESTION 80 Which of the following parameters best describes the rate-limiting associated with a GBR bearer? A. The GBR B. The APN-AMBR C. The MBR D. The GBR and the MBR E. The UE-AMBR Correct Answer: D /Reference: : QUESTION 81 Based on the information shown in the exhibit, which of the following is the MBR/GBR value for Bearer 5 in the DL direction?

56

57 A /10000 kbps B /20000 kbps C /30000 kbps D /40000 kbps E. None of the above answers are correct Correct Answer: E /Reference: : QUESTION 82 On the Alcatel-Lucent 7750 PGW, which of the following CLI commands is used to check the message statistics between the PGW and the PCRF? A. Show mobile-gateway pdn pdn-context B. Show mobile-gateway pdn ref-point-stats ga C. Show mobile-gateway pdn ref-point-stats gx D. Show mobile-gateway pdn ref-point-peers gn E. Show mobile-gateway pdn ref-point-peers gx Correct Answer: C /Reference: : QUESTION 83 Which of the following does not apply when an MG-ISM group is configured on an Alcatel- Lucent 7750 MG? (Choose two) A. A maximum of two MG-ISM cards may be configured in a group. B. The redundancy model must be configured and it is always displayed as one-to-one C. The MG-ISM cards configured in the same group must be contiguous. D. Only one MG-ISM card in a group may be configured as working, E. More than one MG-ISM card in a group may be configured as protect.

58 F. The gateway instance must be specified during the group configuration. Correct Answer: CE /Reference: : QUESTION 84 On an Alcatel-Lucent 7750 MG, which of the following best describes the protect-active-delay timer configured for an MG-ISM group? A. This timer indicates the time that the working card waits before it declares itself active after a node restart. B. This timer indicates the time that the protection card waits before it declares itself active during an MG-ISM switchover. C. This timer indicates the time that the working card waits before it declares itself active after an MG-ISM switchover to the protection card has been performed. D. This timer indicates the time that the protection card waits before it declares itself active if the working card does not come up after a node restart. Correct Answer: D /Reference: : QUESTION 85 On Alcatel-Lucent 7750 SGW, which of the following CLI commands can be used to check the connectivity to the GTP peer? A. oam gtp-ping s5c destination port 2122 gateway 1 B. oam gtp-ping s5c destination port 2123 gateway 1 C. oam gtp-ping s5u destination port 2153 gateway 1 D. oam gtp-ping s5u destination port 2154 gateway 1 E. Answers B and D are both correct. Correct Answer: B /Reference: :

59 QUESTION 86 On Alcatel-Lucent 7750 PGW, which of the following CLI commands can be used to debug a given IMSI? A. debug mobile-gateway pdn 1 pdn-session imsi B. debug mobile-gateway pdn 1 pdn-session-db imsi C. debug mobile-gateway pdn 1 pdn-session imsi apn ipd.alcatel-lucent.com D. debug mobile-gateway pdn 1 pdn-session-db imsi apn ipd.alcatel- lucent.com E. Answers A and C are both correct. F. Answers B and D are both correct. Correct Answer: C /Reference: : QUESTION 87 On Alcatel-Lucent 7750 SGW, which of the following CLI commands is used to obtain the output displayed in the exhibit?

60 A. show mobile-gateway serving ref-point-stats s11 B. show mobile-gateway serving ref-point-stats s5 C. show mobile-gateway serving ref-point-peers s11 D. show mobile-gateway serving ref-point-peers s5 Correct Answer: A

61 /Reference: : QUESTION 88 Which of the following statements is FALSE regarding Key Performance Indicator/Key Capacity Indicator (KPI/KCI)? A. KPI /KCI counters are supported on both Alcatel-Lucent 7750 SGW and 7750 PGW. B. The cf:\mob-gw-stats directory contains the current records. C. The cf:\mob-gw directory contains all closed records. D. KPI/KCI counters are used to debug real-time issues on the mobile gateway. E. An XML file is created and stored in the CPM's flash card. F. None of the above statements are false. Correct Answer: D /Reference: : QUESTION 89 Which of the following statements is FALSE regarding the communication between a UE and an enodeb? A. The enodeb terminates the air interface of the UE and manages the radio connection between the UE and the enodeb. B. The enodeb transmits the paging messages to an idle UE when the paging is required. C. During an IMSI attach, the UE informs the enodeb which MME should be used to service it. D. The enodeb performs the compression and encryption of the user data stream. E. A UE must go through an enodeb to access the EPC core. Correct Answer: C

62 /Reference: : QUESTION 90 Which of the following statements most accurately describes the EPS bearers? A. A UE can have only one default bearer. B. A UE may have more than one dedicated bearer. C. Each EPS bearer may provide different QoS treatment for its traffic. D. EPS bearers that connect a given UE to a single APN use different IP subnets. E. Only answers A, B and C are correct. F. Only answers B and C are correct. Correct Answer: F /Reference: : QUESTION 91 Based on the information shown in the exhibit, how many IP addresses has the PGW allocated in total for all UEs?

63 A. 6 B. 5 C. 4 D. 3 E. 2 F. 1 Correct Answer: D /Reference: : QUESTION 92 Which of the following interfaces is not using the GTP-C protocol? A. TheS11 interface

64 B. The S1-MME interface C. The S10 interface D. The S5 interface E. The S8 interface Correct Answer: B /Reference: : QUESTION 93 Which of the following statements is FALSE regarding the GTP tunnel? A. The GTP-C tunnel is used to carry the signaling messages. B. The GTP-U tunnel is used to carry the user data. C. On the SGW, there is only one GTP-C tunnel over the S5 interface to handle all the bearers to reach the same PGW. D. A GTP-C tunnel may be associated with multiple GTP-U tunnels over the S5 interface. E. There is a one-to-one mapping between the S1 bearer and the S1-U GTP-U tunnel. Correct Answer: C /Reference: : QUESTION 94 Which of the following is the message used to detect a transport failure over a Diameter connection? A. The Capabilities-Exchange message B. The Device-Watchdog message C. The Credit-Control message D. The Disconnect-Peer message E. None of the above answers are correct Correct Answer: B

65 /Reference: : QUESTION 95 Which of the following most accurately describes the CPM modules on an Alcatel-Lucent 7750 MG? A. The CPM modules are responsible for load balancing the EPS bearers. B. The CPM modules always choose the same MG-ISM group to handle all the bearers of a given UE. C. Two CPM modules can be installed on an Alcatel-Lucent 7750 MG node. One CPM is in active state while the other is in hot-standby state. D. The CPM module also includes the Switch Fabric function for the Alcatel-Lucent 7750 MG. E. All of the above answers are correct. Correct Answer: E /Reference: : QUESTION 96 On Alcatel-Lucent 7750 SGW, which of the following CLI commands can be used to check the TEID-U values assigned to an EPS bearer for a particular UE? A. Show mobile-gateway serving pdn-context B. Show mobile-gateway serving pdn-context imsi <imsi-number> detail C. Show mobile-gateway serving ue-context D. Show mobile-gateway serving ue-context imsi <imsi-number> detail E. Show mobile-gateway serving bearer-context F. Show mobile-gateway serving bearer-context imsi <imsi-number> detail Correct Answer: F /Reference: :

66 QUESTION 97 Which of the following statements is FALSE regarding the Network Initiated Dedicated Bearer Activation procedure? A. A Create Bearer Request message is sent from PGW to SGW. B. An AA Request message is sent from AF to PCRF. C. A Bearer Setup Request message is sent from SGW to MME. D. A Re-Authorization Request message is sent from PCRF to PGW. Correct Answer: C /Reference: : QUESTION 98 Based on the information shown in the exhibit, which of the following statements is TRUE regarding the UE state and its default bearer?

67 A. The UE is in the active state. The default EPS bearer is fully established. B. The UE is in the active state. The default EPS bearer is not fully established. C. The UE is in the idle state. The default EPS bearer is fully established. D. The UE is in the idle state. The default EPS bearer is not fully established. Correct Answer: D

68 /Reference: : QUESTION 99 Which of the following statements is FALSE regarding the service request procedure? A. The UE is always paged during a service request procedure. B. The S1-MME signaling connection is reestablished for the UE as a result of a service request procedure. C. The radio bearers are reestablished for the UE as a result of a service request procedure. D. The S1 GTP-U tunnels are reestablished for the UE as a result of a service request procedure. E. None of the above statements are false. Correct Answer: A /Reference: : QUESTION 100 Which of the following statements is FALSE regarding the SGW? A. A UE may be served by more than one SGW at a given time. B. The SGW is connected to the E-UTRAN via the S1-u interface. C. The SGW may provide data plane connectivity between two enodebs. D. The SGW connects to the PGW via the S5/S8 interface. E. The SGW acts as a common anchor point during handovers between LTE and Release 8 UMTS networks. Correct Answer: A /Reference: : QUESTION 101

69 Which of the following statements is FALSE regarding the triggers of the Tracking Area Update (TAU) messages? A. A TAU is sent when an active UE moves into a new TA that is not in the UE's current Tracking Area Identity (TAI) list. B. A TAU is sent when a UE moves from the 2G/3G network back to the LTE network. C. A TAU is sent when an idle UE moves into a new TA that is not in the UE's current TAI list. D. A TAU is required to be sent periodically. E. A TAU is never required as long as an idle UE stays in the same TA. Correct Answer: E /Reference: : QUESTION 102 Which of the following statements is TRUE when a UE is in the EMM_REGISTERED/ECM_IDLE state? A. There is no radio bearer between the UE and the enodeb. The S1-MME, S1-U, and S5 connections are all released for the UE. B. There is no radio bearer between the UE and the enodeb. The S1-MME connection can no longer be used but the S1-U and S5 connections are still available for the UE. C. There is no radio bearer between the UE and the enodeb. The S1-MME and the S1-U connections can no longer be used but the S5 connection is still available for the UE. D. There is no radio bearer between the UE and the enodeb. The S1-MME, S1-U and S5 connections are still available for the UE. E. None of the above answers are correct. Correct Answer: C /Reference: : QUESTION 103 Which of the following statements is FALSE regarding the S1-U interface? A. It is the user plane interface used to connect the E-UTRAN and the EPC core. B. It relies on the GTP-C path to exchange the "Echo Request" / "Echo Response" messages between the enodeb and the SGW.

70 C. It may be used to transport user data during the inter-enodeb handover. D. It uses the GTP-U protocol. E. The UDP protocol is used as the transport protocol. Correct Answer: B /Reference: : QUESTION 104 On Alcatel-Lucent 7750 PGW, which of the following CLI commands can be used to check the TEID-C values assigned to an S5 GTP-C tunnel for a particular UE? A. Show mobile-gateway pdn pdn-context B. Show mobile-gateway pdn pdn-context imsi <imsi-number> detail C. Show mobile-gateway pdn ue-context D. Show mobile-gateway pdn ue-context imsi <imsi-number> detail E. Show mobile-gateway pdn bearer-context F. Show mobile-gateway pdn bearer-context imsi <imsi-number> detail Correct Answer: B /Reference: : QUESTION 105 Which of the following statements is TRUE when a registered UE goes idle? A. All UE resources are freed on the MME. B. All UE resources are freed on the enodeb. C. All UE resources are freed on the SGW. D. The UE triggers the S1 Release procedure E. None of the above statements are true. Correct Answer: B

71 /Reference: : QUESTION 106 What is the purpose of indirect data tunnels established for a particular UE? A. The indirect data tunnels are used during handovers to forward downlink data from the target enodeb to the source enodeb. B. The indirect data tunnels are used during handovers to forward uplink data from the target enodeb to the source enodeb. C. The indirect data tunnels are used during handovers to forward downlink data from the source enodeb to the target enodeb. D. The indirect data tunnels are used during handovers to forward uplink data from the source enodeb to the target enodeb. Correct Answer: C /Reference: : QUESTION 107 Which of the following statements are FALSE regarding the SDF templates / filters? (Choose two) A. One dedicated bearer can have more than one SDF template. B. One SDF template can have only one SDF filter for each direction. C. One dedicated bearer can have more than one SDF template and multiple SDF filters. D. One dedicated bearer can have only one SDF template. E. One SDF template can have multiple SDF filters for each direction. Correct Answer: BD

72 /Reference: : QUESTION 108 Which of the following most accurately describes the QCI / ARP? A. The QCI has 9 classes and the ARP has 15 levels. B. A default QCI/ARP policy is predefined on the Alcatel-Lucent 7750 MG and cannot be modified. C. Each EPS bearer is associated with one QCI value. D. All of the above answers are correct. E. Only answers A and B are correct. Correct Answer: D /Reference: : QUESTION 109 On the Alcatel-Lucent 7750 PGW, which of the following CLI commands Is used to check the APN-AMBR enforced on the PGW for a particular UE? A. Show mobile-gateway pdn pdn-context B. Show mobile-gateway pdn pdn-context imsi <imsi-number> detail C. Show mobile-gateway pdn bearer-context D. Show mobile-gateway pdn bearer-context imsi <imsi-number> detail E. Show mobile-gateway pdn ue-context F. Show mobile-gateway pdn ue-context imsi <imsi-number> detail Correct Answer: B /Reference: :

73 QUESTION 110 Which of the following statements is FALSE regarding the SGW handling of an incoming GTP packet with a TEID value of zero? A. The ingress IOM card forwards the received packet to the active CPM card. B. After processing the received packet, the MG-ISM card creates a response and sends it to the active CPM card C. The CPM card forwards the packet to an active MG-ISM card. D. The MG-ISM card creates the proper contexts and assigns the required TED values. E. None of the above statements are false. Correct Answer: B /Reference: : QUESTION 111 Which of the following statements are FALSE regarding the SGW? (Choose two) A. The SGW is connected to the E-UTRAN via the S1-u interface. B. At a given time, a single SGW handles all the connections for a given UE. C. The SGW provides downlink data buffering and paging for an idle UE. D. The SGW can connect to only one PGW. E. The SGW acts as a common anchor point during handovers between LTE and Release 8 UMTS networks. F. The SGW may provide data plane connectivity between two enodebs. Correct Answer: CD /Reference: : QUESTION 112 Which of the following statements is TRUE when a UE is in the EMM_DEREGISTERED/ECM_IDLE state? A. There is no radio bearer between the UE and the enodeb. The S1-MME, S1-U, and S5 connections are all released for the UE. B. There is no radio bearer between the UE and the enodeb. The S1-MME connection is released but the S1-U and S5 connections are still available for the UE.

74 C. There is no radio bearer between the UE and the enodeb. The S1-MME and the S1-U connections are released but the S5 connection is still available for the UE. D. There is no radio bearer between the UE and the enodeb. The S1-MME, S1-U and S5 connections are still available for the UE. E. None of the above answers are correct. Correct Answer: A /Reference: : QUESTION 113 Which of the following is used to carry the GTP message "T-PDU"? A. The GTPv1 protocol B. The GTPv2 protocol C. The TCP protocol D. The GTPv1 protocol or the GTPv2 protocol E. None of the above answers are correct Correct Answer: A /Reference: : QUESTION 114 Which of the following statements is FALSE regarding the Gx interface? A. It is a Diameter-based interface between the PCRF and the PCEF. B. The PCEF can act as a client or as a server for the Diameter connection depending on which application is running over the Gx interface. C. The PCEF receives the QoS information for a bearer from the PCRF over the Gx interface. D. It runs a vendor specific application identified by an application ID value of E. It is never used to transport user data packets. Correct Answer: B

75 /Reference: : QUESTION 115 On an Alcatel-Lucent 7750 PGW, which of the following is a mandatory step required to set up a Diameter connection to a PCRF server? A. Create a Diameter profile. B. Create a Diameter Peer profile. C. Assign the Diameter profile to the Diameter Peer profile D. Assign the Diameter Peer profile to the Gx interface. E. All of the above answers are required. F. Only answers B and D are required. Correct Answer: F /Reference: : QUESTION 116 On the Alcatel-Lucent 7750 SGW, which of the following is the CLI command to check the "UP / IDLE" state for the GTP path to a PGW? A. Show mobile-gateway serving ref-point-peers s5 B. Show mobile-gateway serving ref-point-stats s5 C. Show mobile-gateway serving ref-point-peers s1u D. Show mobile-gateway serving path-mgmt s5 E. None of the above answers are correct. Correct Answer: A /Reference: :

76 QUESTION 117 During the UE attachment procedure, which of the following statements are TRUE regarding the Request message sent from the SGW to the PGW? (Choose two) A. The Request message includes the TEID-C value assigned by the PGW. B. The Request message includes the TEID-C value assigned by the SGW. C. The Request message includes the TEID-U value assigned by the SGW. D. The Request message includes both the TEID-C value assigned by the SGW and the TEID-C value assigned by the PGW. E. The Request message includes both the TEID-U value assigned by the SGW and the TEID-U value assigned by the PGW. F. The Request message includes both the TEID-U value assigned by the SGW and the TEID-C value assigned by the PGW. Correct Answer: BC /Reference: : QUESTION 118 After a UE attachment procedure, which GTP-C tunnels are established for the UE? A. S1-MME GTP-C tunnel, S11 GTP-C tunnel, and S5 GTP-C tunnel. B. S11 GTP-C tunnel and Gx GTP-C tunnel. C. S11 GTP-C tunnel and S5 GTP-C tunnel. D. S5 GTP-C tunnel and Gx GTP-C tunnel. E. S11 GTP-C tunnel, S5 GTP-C tunnel, and Gx GTP-C tunnel. Correct Answer: C /Reference: : QUESTION 119 Which network entities assign TEIDs to the indirect data tunnel used during an S1-based handover with SGW relocation? A. The source enodeb, the source SGW, and the target SGW B. The source SGW, the target SGW and the target enodeb.

77 C. The source enodeb, the target SGW, and the target enodeb. D. The source enodeb, the source SGW and the target enodeb. E. The source SGW and the target SGW. Correct Answer: C /Reference: : QUESTION 120 Which of the following statements are TRUE regarding the Dynamic PCC rules? (Choose two) A. The Dynamic PCC rules are created on the PCRF and pushed (or pulled) down to the PCEF. B. The Dynamic PCC rules are created on the PCEF and pushed (or pulled) down to the PCRF. C. When GTP tunnels are used between the SGW and PGW, the Gxc interface is used between the PCRF and the PCEF to carry the dynamic PCC rules. D. When GTP tunnels are used between the SGW and PGW, the Rx interface is used between the PCRF and the PCEF to carry the dynamic PCC rules. E. When GTP tunnels are used between the SGW and PGW, the Gx interface is used between the PCRF and the PCEF to carry the dynamic PCC rules. Correct Answer: AE /Reference: : QUESTION 121 Assume that dynamic PCC rules are used on the PGW. When an AF server initiates the establishment of a dedicated bearer for a UE, which of the following messages are exchanged between the PCRF and the PCEF?

78 A. The RAR/RAA messages B. The CSR/CSResp messages C. The CCR/CCA messages. D. The CSR/CSResp and the CCR/CCA messages E. The CSR/CSResp and the RAR/RAA messages. Correct Answer: A /Reference: : QUESTION 122 A dedicated bearer 6 has a total of six SDF filters. Based on the information shown in the exhibit, which of the following is the right order to apply the filters to the uplink traffic?

79

80 A. The filters: 0 (first), 1, 2, 3, 4, 5 (last). B. The filters: 2 (first), 3, 0, 1, 4, 5 (last). C. The filters: 1 (first), 3, 5 (last). D. The filters: 2 (first), 4, 0 (last). E. The filters: 3 (first), 5, 1 (last). F. The filters: 1 (first), 5, 3 (last). Correct Answer: E /Reference: : QUESTION 123 A HE (HTTP client) is communicating with an HTTP server over The EPC core Based on the information shown in the exhibit, what is the maximum HTTP traffic rate that the UE may have in the DL direction?

81

82 A kbps B kbps C kbps D kbps E kbps F. None of the above answers are correct. Correct Answer: E /Reference: : QUESTION 124 When MG-ISM redundancy is used on an Alcatel-Lucent 7750 MG, which of the following statements is FALSE? A. An MG-ISM switchover has no impact on connected users. B. An MG-ISM switchover has no impact on network element peers. C. EPS bearers are synchronized between the active and standby MG-ISM cards. D. The redundancy is non-revertive. E. None of the above statements are false. Correct Answer: E /Reference: : QUESTION 125 Which of the following interfaces is not using the GTP-U protocol? A. The X2 interface B. The S1-U interface C. The S4 interface D. The S5 interface

83 E. The SGi interface Correct Answer: E /Reference: : QUESTION 126 When a UE is roaming, which of the following interfaces is used when the visiting SGW needs to communicate with the UE's home PGW? A. TheS1 interface. B. The S5 interface. C. The S8 interface. D. The S10 interface. E. The SGi interface. Correct Answer: C /Reference: : QUESTION 127 Which of the following statements is FALSE regarding the EPS bearers? A. An EPS bearer is either a GBR bearer or a Non-GBR bearer. B. An EPS bearer is either a default bearer or a dedicated bearer. C. A dedicated bearer can be a GBR or a Non-GBR bearer. D. A default bearer can be a GBR or a Non-GBR bearer. E. A UE can have multiple GBR or Non-GBR bearers. Correct Answer: D /Reference:

84 : QUESTION 128 On Alcatel-Lucent 7750 SGW, which of the following CLI commands is used to obtain the output displayed in the exhibit?

85

86 A. Show mobile-gateway serving ref-point-stats s11 B. Show mobile-gateway serving ref-point-stats s5 C. Show mobile-gateway serving ref-point-stats s11 instance D. Show mobile-gateway serving ref-point-stats s5 instance Correct Answer: D /Reference: : QUESTION 129 In an LTE network, which of the following is used to carry the GTP message "Create Session Request"? A. The GTPv1 protocol. B. The GTPv2 protocol. C. Both the GTPv1 and the GTPv2 protocols. D. Either the GTFV1 protocol or the GTPv2 protocol. E. None of the above answers are correct. Correct Answer: B /Reference: : QUESTION 130 Based on the information shown in the exhibit, when the SGW sends a "Create Session Request" message to the PGW, which of the following is the source IP address expected in the IP packet? A B C D E. None of the above answers are correct

87 Correct Answer: B /Reference: : QUESTION 131 On the Alcatel-Lucent 7750 MG, which of the following is the CLI command to check the active / standby state of the MG-ISM cards? A. Show card detail B. Show mda detail C. Show card state D. Show system information E. Show mobile-gateway system Correct Answer: E /Reference: : QUESTION 132 Which of the following statements is FALSE regarding the UE attachment procedure? A. As a result of this procedure, a default bearer must be established B. As a result of this procedure, a dedicated bearer must be established C. As a result of this procedure, the UE is registered with the network D. As a result of this procedure, the UE is authenticated by the network E. As a result of this procedure, the UE has an IP connectivity to an APN Correct Answer: B /Reference: :

88 QUESTION 133 Which of the following statements is FALSE regarding the UE mobility? A. While in idle state, the UE mobility can trigger a handover. B. While in idle state, the UE mobility can trigger a tracking area update. C. While in connected state, the UE mobility can trigger a handover. D. While in connected state, the UE mobility can trigger a tracking area update. E. None of the above statements are false. Correct Answer: A /Reference: : QUESTION 134 A UE is exchanging best-effort (BE) IP traffic with a PDN server over an EPS bearer with a QCI/ARP value of 9/12. Based on the information shown in the exhibit, what is the DSCP value of traffic egressing the S5 interface of the PGW to the SGW?

89

90 A. BE B. EF C. AF21 D. NC E. None of the above answers are correct Correct Answer: B /Reference: : QUESTION 135 Which of the following statements is FALSE regarding the PGW? A. The PGW terminates the IP sessions from a UE. B. The PGW enforces PCC rules and QoS policies. C. The PGW may provide gating control for user traffic. D. A UE may be served by only one PGW. E. A UE may receive more than one IP address from the PGW. Correct Answer: D /Reference: : QUESTION 136 A UE needs to get an IP address before it can communicate to any PDN over the LTE network. Which of the following statements most accurately describes the process of the IP address allocation? A. A UE may obtain an IP address during the PDN connection setup. B. A PGW may assign the IP address from its local address pools. C. A PGW may obtain an IP address from a RADIUS server and assign it to the UE. D. A PGW may obtain an IP address from a DHCP server and assign it to the UE.

91 E. All of the above answers are correct. Correct Answer: E /Reference: : QUESTION 137 Based on the information shown in the exhibit, how many EPS bearers has the PGW created in total for all UEs? A. 6 B. 5 C. 4 D. 3 E. 2 F. 1