Nokia 4A0-M03 問題集

質問 1：
What network component(s) is/are shared in the gateway core network (GWCN) sharing architecture model?
A. Only E-UTRAN is shared
B. MME and PGW are shared
C. Only MME is shared
D. E-UTRAN and MME are shared
正解：C

質問 2：
Which of the following statements regarding handover is FALSE?
A. S1-based handover is used when X2-based handover attempt failed
B. Handover can occur when UE is in ECM-CONNECTED state
C. During X2-based handover, MME may remain the same or be relocated
D. S1-based handover is used when there is no X2 interface between source and target eNodeBs
正解：C

質問 3：
Which of the following functions is NOT performed by MME when it receives a TAU from a UE?
A. Perform message integrity check
B. Check if UE requests access to a restricted tracking area
C. Inform HSS of the UE's current location
D. Send paging message to a list of SGWs belonging to UE's registered tracking area
正解：D

質問 4：
If the selected SGW fails, which SGW/PGW will MME select if 'gateway selection mode 2' is used?
A. The next topologically closest SGW/PGW pair
B. A new SGW first, then select a new PGW that is topologically closest to the newly selected SGW
C. A new SGW, but new PGW selection is not required
D. A new SGW first, then select a new PGW with the best order and preference values
正解：C