Nokia Nokia Certifications 4A0-M02 Questions & Answers

• Question 61:

  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

• Question 62:

  Based 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.

  Correct Answer: C

• Question 63:

  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

• Question 64:

  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

  Correct Answer: AC

• Question 65:

  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

• Question 66:

  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 detail

  C. Show mobile-gateway serving ue-context imsi detail

  D. Show mobile-gateway serving bearer-context imsi detail

  E. Show mobile-gateway serving ref-point-stats s11

  Correct Answer: C

• Question 67:

  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.

  

  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

• Question 68:

  Which of the following messages are exchanged between the PGW and the PCRF during the UE attachment procedure?

  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

• Question 69:

  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

• Question 70:

  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