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Actualtests 4A0-M02 114q

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4A0-M02

Alcatel-Lucent Mobile Gateways for the LTE Evolved Packet Core

Added Explanations and Exhibits most of the questions.

Exam A

QUESTION 1Which 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: BSection: (none)Explanation

Explanation/Reference:Explanation:

QUESTION 2Which 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 HSSE. All of the above answers are correct.F. Only answers A, B and D are correct.

Correct Answer: FSection: (none)Explanation


QUESTION 3A UE needs to get an IP address before it can communicate to any PDN over the LTE network. Which ofthe following statements are FALSE regarding the process of the IP address allocation? (Choose two)

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: CDSection: (none)Explanation


QUESTION 4In a 3G network, which of the following is used to build a PDP context between a UE and the GGSN when adirect tunnel is not used?

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 theGGSN.

D. A Radio Access Bearer between the UE and the SGSN.E. None of the above answers are correct.

Correct Answer: CSection: (none)Explanation


QUESTION 5Which 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: ASection: (none)Explanation


QUESTION 6Which of the following LTE interfaces are used for the communication of user data? (Choose one bestanswer)


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: DSection: (none)Explanation


QUESTION 7Based on the information shown in the exhibit, which of the following is the PLMN ID?

A. 302B. 720C. 123456789D. 9876543E. 30201613F. 302720



QUESTION 8Which 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.



QUESTION 9Which 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 UEE. The PGW selects one PCRF server if required.



QUESTION 10Based on the information shown in the exhibit, when the SGW receives an IP packet from the UE, which ofthe following is the GTP TEID value expected to be received in the GTP packet header?

A. 0xd05025B. 0x4b00805C. 0x21D. 0x4b00825E. None of the above answers are correct.



QUESTION 11Which 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: ESection: (none)Explanation


QUESTION 12Which of the following most accurately identifies a GTP tunnel on the Alcatel-Lucent 7750 MG by default?

A. ATEIDB. The System IP addressC. A UDP port numberD. ATEIDand the System IP addressE. ATEID, the System IP address and a UDP port number



QUESTION 13An Alcatel-Lucent SGW is only connected to an Alcatel-Lucent PGW. Based on the information shown inthe exhibit, how many GTP-C tunnels are established between the SGW and the PGW?

A. 1B. 2C. 3D. 4E. 6



QUESTION 14Which 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 3868.E. All of the above answers are correct.F. Only answers A and B are correct.



QUESTION 15Which 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.



QUESTION 16Which of the following statements is TRUE when the Alcatel-Lucent 7750 MG receives a GTP packet thathas 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.



QUESTION 17Which of the following statements is FALSE regarding the MG-ISM module on an Alcatel- Lucent 7750MG?

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



QUESTION 18Based on the information shown in the exhibit, which of the following is the time interval used by the SGWto send out an "Echo Request" message over the GTP interface?

A. 3 secondsB. 5 secondsC. 6 secondsD. 60 secondsE. 90 seconds



QUESTION 19On an Alcatel-Lucent 7750 PGW, which of the following is the CLI context where you can specify the IPaddress 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.



QUESTION 20Based 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 inworking condition.

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.



QUESTION 21On the Alcatel-Lucent 7750 PGW, which of the following is the default setting of the APN "selection-mode"?

A. ms-provided-apnB. network-provided-apnC. subscribed-apnD. virtual-apnE. None of the above answers are correct



QUESTION 22Which of the following messages are exchanged between the MME and the SGW during the UEattachment procedure? (Choose two)

A. Create Session Request / Create Session ResponseB. Credit Control Request / Credit Control AnswerC. Attach Request/Attach AcceptD. Update Bearer Request / Update Bearer ResponseE. Modify Bearer Request / Modify Bearer Response

Correct Answer: AESection: (none)Explanation


QUESTION 23On Alcatel-Lucent 7750 PGW, which of the following CLI commands can be used to check the IPaddresses assigned to a particular UE?

A. Show mobile-gateway pdn pdn-contextB. Show mobile-gateway serving pdn-context imsi <imsi-number> detailC. Show mobile-gateway pdn ue-contextD. Show mobile-gateway pdn ue-context imsi <ims-_nnumber> detailE. Show mobile-gateway pdn bearer-contextF. Show mobile-gateway pdn bearer-context imsi <imsi-number> detail



QUESTION 24How 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. OneB. TwoC. ThreeD. FourE. Five



QUESTION 25Based on the information shown in the exhibit, and assuming this is the only bearer present, what is theaction 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 eNodeBB. The packet is buffered.C. The packet is dropped.D. The packet is forwarded to the MME.



QUESTION NO 34Based 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 to0xd06c05?

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

QUESTION 26Based on the information shown in the exhibit, what type of handover is performed when the UE movesfrom eNodeB2 to eNodeB4?

A. X2-based handover without SGW relocationB. X2-based handover with SGW relocationC. X2-based handover with MME relocationD. S1-based handover with SGW relocationE. S1-based handover with MME relocation



QUESTION 27Which 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.



QUESTION 28Based on the information shown in the exhibit, what is the TEID value 0x37 used for?

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.



QUESTION 29During an S1-based handover with MME relocation, which network entity requests the creation of anindirect data forwarding tunnel by sending a "Create Indirect Data Forwarding Tunnel Request" message tothe SGW?

A. The source MME.B. The target MME.C. The source eNodeB.D. The target eNodeB.



QUESTION 30Which 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: BESection: (none)Explanation


QUESTION 31Assume that dynamic PCC rules are used on the PGW. When the UE sends a request to establish adedicated 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



QUESTION 32Which 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-7application

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: CEFSection: (none)Explanation


QUESTION 33A UE is sending data to its FTP server over the EPC core with the TCP port 20. Based on the informationshown in the exhibit, which of the following bearer(s) will be used for the uplink FTP flow?

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.



QUESTION 34Which 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.



QUESTION 35Which 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.



QUESTION 36Based on the information shown in the exhibit, which of the following is the MBR/GBR value for Bearer 6 inthe DL direction?

A. 15000/10000 kbpsB. 30000/20000 kbpsC. 45000/30000 kbpsD. 60000/40000 kbpsE. None of the above answers are correct.



QUESTION 37A UE is sending best-effort (BE) IP traffic to a PDN server over the EPC core. Based on the informationshown in the exhibit, what is the DSCP value of traffic egressing the SGi interface of the PGW to the PDNserver?

A. BEB. EFC. AF21D. NCE. None of the above answers are correct.



QUESTION 38On the Alcatel-Lucent 7750 PGW, which of the following CLI commands is used to check the contents ofthe SDF filters enforced on the PGW for a particular UE?

A. Show mobile-gateway pdn pdn-contextB. Show mobile-gateway pdn pdn-context imsi <imsi-number> detailC. Show mobile-gateway pdn bearer-context

D. Show mobile-gateway pdn bearer-context imsi <imsi-number> detailE. Show mobile-gateway pdn ue-contextF. Show mobile-gateway pdn ue-context imsi <imsi-number> detail



QUESTION 39Which 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.



QUESTION 40Which of the following statements is FALSE regarding the keep alive messages exchanged between theCPM 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 cardC. 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.



QUESTION 41Based 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.D. Watchdog messages are not being exchanged with the PCRF peer.E. None of the above statements are false.



QUESTION 42On Alcatel-Lucent 7750 PGW, which of the following CLI commands is used to verify the EPS proceduresbeing performed on the mobile gateway?

A. Show mobile-gateway pdn call-flow-statisticsB. Show mobile gateway pdn call-flowsC. Show mobile-gateway pdn call-flow-statsD. Show mobile-gateway pdn 1 call-flow-statistics



QUESTION 43Based 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 307C. The stats arecollectedfrom MG-ISM card 5.D. The number of idle users at the end of this interval is 10E. None of the above statements are false.



QUESTION 44Which of the following LTE interfaces are used for the communication of control messages? (Choose onebest 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.



QUESTION 45The S1-MME is the interface used for the communication between the eNodeB and the MME. Which of thefollowing transport protocols is used by this interface?

A. The Transmission Control Protocol (TCP)B. The User Datagram Protocol (UDP)C. The TCP or the UDPD. The Stream Control Transmission Protocol (SCTP)E. None of the above answers are correct



QUESTION 46Based 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?

A. 0xd05425B. 0x4f00805C. 0x21D. 0x4f00825E. None of the above answers are correct



QUESTION 47Which 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.



QUESTION 48Which 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.



QUESTION 49Which of the following statements is TRUE when the Alcatel-Lucent 7750 MG receives a GTP packet thathas 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.



QUESTION 50Based 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?




QUESTION 51Based 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 inworking condition.

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.



QUESTION 52After 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.



QUESTION 53Which of the following resources are freed when a registered UE goes idle? (Choose 2)

A. S1-MME signaling connectionB. S11GTP-C tunnelC. S1 GTP-U tunnel

D. S5 GTP-C tunnelE. S5 GTP-U tunnel

Correct Answer: ACSection: (none)Explanation


QUESTION 54On Alcatel-Lucent 7750 SGW, which of the following CLI commands can be used to check the number oftimes a handover procedure has been performed for a particular UE?

A. Show mobile-gateway serving call-flow-statsB. Show mobile-gateway serving pdn-context imsi <imsi-number> detailC. Show mobile-gateway serving ue-context imsi <imsi-number> detailD. Show mobile-gateway serving bearer-context imsi <imsi-number> detailE. Show mobile-gateway serving ref-point-stats s11



QUESTION 55Based on the information shown in the exhibit, what is the TEID value 0xd06015 used for?

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.



QUESTION 56During a UE detach procedure, which commands are exchanged over the S5 interface?

A. Delete Session Request / Delete Session ResponseB. Terminate Session Request/Terminate Session ResponseC. Release Session Request / Release Session ResponseD. Delete Bearer Request/Delete Bearer Response



QUESTION 57Based on the information shown in the exhibit, which of the following is the MBR/GBR value for Bearer 5 inthe DL direction?

A. 15000/10000 kbpsB. 30000/20000 kbpsC. 45000/30000 kbpsD. 60000/40000 kbpsE. None of the above answers are correct


Explanation/Reference:

Explanation:

QUESTION 58Which of the following does not apply when an MG-ISM group is configured on an Alcatel- Lucent 7750MG? (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-oneC. 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.F. The gateway instance must be specified during the group configuration.

Correct Answer: CESection: (none)Explanation


QUESTION 59On Alcatel-Lucent 7750 SGW, which of the following CLI commands can be used to check the connectivityto the GTP peer?

A. oam gtp-ping s5c destination 10.10.7.2 port 2122 gateway 1B. oam gtp-ping s5c destination 10.10.7.2 port 2123 gateway 1C. oam gtp-ping s5u destination 10.10.7.2 port 2153 gateway 1D. oam gtp-ping s5u destination 10.10.7.2 port 2154 gateway 1E. Answers B and D are both correct.



QUESTION 60On 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 226041000000008B. debug mobile-gateway pdn 1 pdn-session-db imsi 226041000000008C. debug mobile-gateway pdn 1 pdn-session imsi 226041000000008 apn ipd.alcatel-lucent.comD. debug mobile-gateway pdn 1 pdn-session-db imsi 226041000000008 apn ipd.alcatel- lucent.comE. Answers A and C are both correct.F. Answers B and D are both correct.




QUESTION 61On Alcatel-Lucent 7750 SGW, which of the following CLI commands is used to obtain the output displayedin the exhibit?

A. show mobile-gateway serving ref-point-stats s11B. show mobile-gateway serving ref-point-stats s5C. show mobile-gateway serving ref-point-peers s11D. show mobile-gateway serving ref-point-peers s5



QUESTION 62Which 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.



QUESTION 63Which 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 UEand 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.



QUESTION 64Which 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.



QUESTION 65Based on the information shown in the exhibit, how many IP addresses has the PGW allocated in total forall UEs?

A. 6B. 5C. 4D. 3E. 2F. 1



QUESTION 66Which of the following interfaces is not using the GTP-C protocol?

A. TheS11 interfaceB. The S1-MME interfaceC. The S10 interfaceD. The S5 interfaceE. The S8 interface



QUESTION 67Which 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.



QUESTION 68Which of the following is the message used to detect a transport failure over a Diameter connection?

A. The Capabilities-Exchange messageB. The Device-Watchdog messageC. The Credit-Control messageD. The Disconnect-Peer messageE. None of the above answers are correct



QUESTION 69Which 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.



QUESTION 70On Alcatel-Lucent 7750 SGW, which of the following CLI commands can be used to check the TEID-Uvalues assigned to an EPS bearer for a particular UE?

A. Show mobile-gateway serving pdn-contextB. Show mobile-gateway serving pdn-context imsi <imsi-number> detailC. Show mobile-gateway serving ue-contextD. Show mobile-gateway serving ue-context imsi <imsi-number> detailE. Show mobile-gateway serving bearer-contextF. Show mobile-gateway serving bearer-context imsi <imsi-number> detail



QUESTION 71Which of the following statements is FALSE regarding the Network Initiated Dedicated Bearer Activationprocedure?

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.



QUESTION 72Based on the information shown in the exhibit, which of the following statements is TRUE regarding the UEstate and its default bearer?

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

Section: (none)Explanation


QUESTION 73Which 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.



QUESTION 74Which 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.



QUESTION 75Which 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 AreaIdentity (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.



QUESTION 76Which 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 areall released for the UE.

B. There is no radio bearer between the UE and the eNodeB. The S1-MME connection can no longer beused 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 canno 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 arestill available for the UE.

E. None of the above answers are correct.



QUESTION 77Which 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.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.



QUESTION 78On Alcatel-Lucent 7750 PGW, which of the following CLI commands can be used to check the TEID-Cvalues assigned to an S5 GTP-C tunnel for a particular UE?

A. Show mobile-gateway pdn pdn-contextB. Show mobile-gateway pdn pdn-context imsi <imsi-number> detailC. Show mobile-gateway pdn ue-contextD. Show mobile-gateway pdn ue-context imsi <imsi-number> detailE. Show mobile-gateway pdn bearer-contextF. Show mobile-gateway pdn bearer-context imsi <imsi-number> detail



QUESTION 79Which 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 procedureE. None of the above statements are true.



QUESTION 80What 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 tothe source eNodeB.

B. The indirect data tunnels are used during handovers to forward uplink data from the target eNodeB tothe source eNodeB.

C. The indirect data tunnels are used during handovers to forward downlink data from the source eNodeBto the target eNodeB.

D. The indirect data tunnels are used during handovers to forward uplink data from the source eNodeB tothe target eNodeB.



QUESTION 81Which 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: BDSection: (none)Explanation


QUESTION 82Which 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.



Explanation:

QUESTION 83On the Alcatel-Lucent 7750 PGW, which of the following CLI commands Is used to check the APN-AMBRenforced on the PGW for a particular UE?

A. Show mobile-gateway pdn pdn-contextB. Show mobile-gateway pdn pdn-context imsi <imsi-number> detailC. Show mobile-gateway pdn bearer-contextD. Show mobile-gateway pdn bearer-context imsi <imsi-number> detailE. Show mobile-gateway pdn ue-contextF. Show mobile-gateway pdn ue-context imsi <imsi-number> detail



QUESTION 84Which of the following statements is FALSE regarding the SGW handling of an incoming GTP packet with aTEID 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 cardC. 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.



QUESTION 85Which 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: CDSection: (none)Explanation


QUESTION 86Which 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 areall released for the UE.

B. There is no radio bearer between the UE and the eNodeB. The S1-MME connection is released but theS1-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 arereleased 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 arestill available for the UE.

E. None of the above answers are correct.



QUESTION 87Which of the following is used to carry the GTP message "T-PDU"?

A. The GTPv1 protocolB. The GTPv2 protocolC. The TCP protocolD. The GTPv1 protocol or the GTPv2 protocolE. None of the above answers are correct



QUESTION 88Which 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 16777238.E. It is never used to transport user data packets.



QUESTION 89On an Alcatel-Lucent 7750 PGW, which of the following is a mandatory step required to set up a Diameterconnection to a PCRF server?

A. Create a Diameter profile.B. Create a Diameter Peer profile.C. Assign the Diameter profile to the Diameter Peer profileD. 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.



QUESTION 90On the Alcatel-Lucent 7750 SGW, which of the following is the CLI command to check the "UP / IDLE" statefor the GTP path to a PGW?

A. Show mobile-gateway serving ref-point-peers s5B. Show mobile-gateway serving ref-point-stats s5C. Show mobile-gateway serving ref-point-peers s1uD. Show mobile-gateway serving path-mgmt s5E. None of the above answers are correct.



QUESTION 91During the UE attachment procedure, which of the following statements are TRUE regarding the Requestmessage 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: BCSection: (none)Explanation


QUESTION 92After 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.



QUESTION 93Which network entities assign TEIDs to the indirect data tunnel used during an S1-based handover withSGW relocation?

A. The source eNodeB, the source SGW, and the target SGWB. The source SGW, the target SGW and the target eNodeB.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.



QUESTION 94Which 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: AESection: (none)Explanation


QUESTION 95Assume that dynamic PCC rules are used on the PGW. When an AF server initiates the establishment of adedicated bearer for a UE, which of the following messages are exchanged between the PCRF and thePCEF?

A. The RAR/RAA messagesB. The CSR/CSResp messagesC. The CCR/CCA messages.D. The CSR/CSResp and the CCR/CCA messagesE. The CSR/CSResp and the RAR/RAA messages.



QUESTION 96A 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?

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).



QUESTION 97A HE (HTTP client) is communicating with an HTTP server over The EPC core Based on the informationshown in the exhibit, what is the maximum HTTP traffic rate that the UE may have in the DL direction?

A. 10000 kbpsB. 15000 kbpsC. 20000 kbpsD. 30000 kbpsE. 55000 kbpsF. None of the above answers are correct.



QUESTION 98When MG-ISM redundancy is used on an Alcatel-Lucent 7750 MG, which of the following statements isFALSE?

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.



QUESTION 99Which of the following interfaces is not using the GTP-U protocol?

A. The X2 interfaceB. The S1-U interfaceC. The S4 interfaceD. The S5 interfaceE. The SGi interface



QUESTION 100When a UE is roaming, which of the following interfaces is used when the visiting SGW needs tocommunicate 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.



QUESTION 101Which 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.



QUESTION 102On Alcatel-Lucent 7750 SGW, which of the following CLI commands is used to obtain the output displayedin the exhibit?

A. Show mobile-gateway serving ref-point-stats s11B. Show mobile-gateway serving ref-point-stats s5C. Show mobile-gateway serving ref-point-stats s11 instance

D. Show mobile-gateway serving ref-point-stats s5 instance



QUESTION 103In 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.



QUESTION 104Based on the information shown in the exhibit, when the SGW sends a "Create Session Request" messageto the PGW, which of the following is the source IP address expected in the IP packet?

A. 10.10.2.1B. 10.10.7.1C. 20.20.0.1D. 72.22.24.163E. None of the above answers are correct



QUESTION 105On the Alcatel-Lucent 7750 MG, which of the following is the CLI command to check the active / standbystate of the MG-ISM cards?

A. Show card detailB. Show mda detailC. Show card stateD. Show system informationE. Show mobile-gateway system



QUESTION 106Which of the following statements is FALSE regarding the UE attachment procedure?

A. As a result of this procedure, a default bearer must be establishedB. As a result of this procedure, a dedicated bearer must be establishedC. As a result of this procedure, the UE is registered with the networkD. As a result of this procedure, the UE is authenticated by the networkE. As a result of this procedure, the UE has an IP connectivity to an APN



QUESTION 107Which 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.



QUESTION 108A UE is exchanging best-effort (BE) IP traffic with a PDN server over an EPS bearer with a QCI/ARP valueof 9/12. Based on the information shown in the exhibit, what is the DSCP value of traffic egressing the S5interface of the PGW to the SGW?

A. BEB. EFC. AF21D. NCE. None of the above answers are correct



Explanation:

QUESTION 109Which 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.



QUESTION 110A UE needs to get an IP address before it can communicate to any PDN over the LTE network. Which ofthe 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.E. All of the above answers are correct.



QUESTION 111Based on the information shown in the exhibit, how many EPS bearers has the PGW created in total for allUEs?

A. 6B. 5C. 4D. 3E. 2F. 1



QUESTION 112Based on the information shown in the exhibit, which of the following is the time interval used by the SGWto send out an "Echo Request" message over the S11 interface?




QUESTION 113On the Alcatel-Lucent 7750 PGW, which of the following is the CLI command to check the statistics of the"Create Session Request" / "Create Session Response" messages?

A. Show mobile-gateway pdn ref-point-peers gxB. Show mobile-gateway pdn ref-point-peers s5C. Show mobile-gateway pdn ref-point-stats gaD. Show mobile-gateway pdn ref-point-stats s5E. None of the above answers are correct.



QUESTION 114On Alcatel-Lucent 7750 PGW, which of the following statements is FALSE regarding the debugging of agiven IMSI?

A. The output may be filtered per bearer.B. The APN value must be specified in the debug command.C. A log must be created to view the debug output.D. The output may be filtered per APN and per reference point.E. None of the above statements are false.