Nokia Nokia Certifications 4A0-M03 Questions & Answers

• Question 11:

  Given the exhibit, which component initiated a mobile-terminated location request (MT-LR) procedure for external LCS client?

  

  A. MME

  B. GMLC

  C. E-SMLC

  D. HSS

  Correct Answer: D

  Reference: https://www.google.com/url? sa=tandrct=jandq=andesrc=sandsource=webandcd=andved=2ahUKEwiEuu_cmrnsAhXiD2MBHQUND3AQFjAAegQIBh ACandurl=ftp%3A%2F%2Fwww.3gpp.org%2Ftsg_sa%2FWG5_TM%2FTSGS5_68% 2F_specs_for_checking%2Fupgrade%2F32271-900.docandusg=AOvVaw1w-IpeUNE8VTNAgojrdFa4

• Question 12:

  Which of the following functions is NOT performed by MME when it receives a TAU from a UE?

  A. Perform message integrity check

  B. Inform HSS of the UE's current location

  C. Check if UE requests access to a restricted tracking area

  D. Send paging message to a list of SGWs belonging to UE's registered tracking area

  Correct Answer: D

• Question 13:

  Which of the following is NOT a characteristic of the home routed roaming architecture?

  A. Bearer traffic is routed from the SGW to the PGW over the S5 interface

  B. The UE bearers are anchored at the SGW to the VPLMN

  C. Subscriber services are obtained through the HPLMN

  D. The MME in the VPLMN has an S6a interface to the HSS in the HPLMN

  Correct Answer: A

• Question 14:

  Which of the following is NOT performed by the MME during service request procedure?

  A. MME sends paging messages to a list of eNodeBs.

  B. MME updates the SGW with current eNodeB information.

  C. MME re-establishes S11 bearers for the UE.

  D. MME requests eNodeB to establish radio and S1 bearers for the UE.

  Correct Answer: C

• Question 15:

  Which of the following is NOT performed by the MME during a TAU procedure?

  A. MME sends paging messages to a list of eNodeBs.

  B. MME informs the HSS about the UE's current location.

  C. MME sends the UE a new TA list containing the new TAIs.

  D. MME determines if SGW relocation is required and selects a new SGW.

  Correct Answer: D

• Question 16:

  Which of the following messages are exchanged between the MME and the SGW during the dedicated bearer activation procedure?

  A. Attach Request / Attach Accept

  B. Create Bearer Request / Create Bearer Response

  C. Session Management Request / Session Management Response

  D. RA-Request / RA-Answer

  Correct Answer: B

  Reference: https://www.sciencedirect.com/topics/engineering/dedicated-bearer

• Question 17:

  Which of the following messages are exchanged between the MME and the SGW during the UE-initiated detach procedure?

  A. Detach Request / Detach Accept

  B. Delete Session Request / Delete Session Response

  C. S1 Context Release / S1 Context Release Complete

  D. CC-Request / CC-Answer

  Correct Answer: A

  Reference: https://www.slideshare.net/tharinduwije/lte-ue-initial-attach-detach-from-networkx

• Question 18:

  Which of the following is NOT performed by the MME during S1-based handover procedure?

  A. MME determines if SGW relocation is required.

  B. MME selects the target eNodeB for handover.

  C. MME releases bearers that are not accepted by the target eNodeB.

  D. MME checks if the handover is to restricted area based on the handover restriction list.

  Correct Answer: C

• Question 19:

  Which of the following regarding PM is FALSE?

  A. PM counters contain system health information on a specific VM.

  B. PM counters are stored in XML format.

  C. PM counters are collected on a per-interval basis.

  D. A PM job is defined to collect PM counters.

  Correct Answer: D

• Question 20:

  Given the exhibit, the MME is unable to retrieve authentication vector (AV) from the HSS and the initial UE attach fails.

  Which of the following actions is useful for troubleshooting this problem?

  

  A. Verify if the IMSI to HSS mapping list is configured properly.

  B. Verify if a GTP profile is associated with the S6a interface.

  C. Verify if the TAI value matches between the MME and the HSS.

  D. Verify if the DNS server is provisioned to dynamically discover the HSS IP address.

  Correct Answer: D