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2021 Jan 4A0-M02 test question
Q31. 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?
A. 0xd05425
B. 0x4f00805
C. 0x21
D. 0x4f00825
E. None of the above answers are correct
Answer: A
Q32. 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.
Answer: C,D
Q33. On 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 gx
B. Show mobile-gateway pdn ref-point-peers s5
C. Show mobile-gateway pdn ref-point-stats ga
D. Show mobile-gateway pdn ref-point-stats s5
E. None of the above answers are correct.
Answer: D
Q34. 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.
Answer: B,C
Q35. 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.
Answer: B
Leading 4A0-M02 exam:
Q36. 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.
Answer: D
Q37. 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.
Answer: B
Q38. 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.
Answer: E
Q39. 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. 10.10.2.1
B. 10.10.7.1
C. 20.20.0.1
D. 72.22.24.163
E. None of the above answers are correct
Answer: D
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.
Answer: A
Q40. 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.
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.
Answer: C