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Q57. On Alcatel-Lucent 7750 PGW, which of the following CLI commands can be used to check the IP addresses assigned to a particular UE? 

A. Show mobile-gateway pdn pdn-context 

B. Show mobile-gateway serving pdn-context imsi <imsi-number> detail 

C. Show mobile-gateway pdn ue-context 

D. Show mobile-gateway pdn ue-context imsi <ims-_nnumber> detail 

E. Show mobile-gateway pdn bearer-context 

F. Show mobile-gateway pdn bearer-context imsi <imsi-number> detail 

Answer: A 


Q58. 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 


Q59. A HE (HTTP client) is communicating with an HTTP server over The EPC core Based on the information shown in the exhibit, what is the maximum HTTP traffic rate that the UE may have in the DL direction? 

A. 10000 kbps 

B. 15000 kbps 

C. 20000 kbps 

D. 30000 kbps 

E. 55000 kbps 

F. None of the above answers are correct. 

Answer: E 


Q60. Which 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 are all released for the UE. 

B. There is no radio bearer between the UE and the eNodeB. The S1-MME connection is released 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 are released 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 are still available for the UE. 

E. None of the above answers are correct. 

Answer: A 


Q61. Which 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. 

Answer: C 


Q62. 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 

Answer: C 


Q63. An Alcatel-Lucent SGW is only connected to an Alcatel-Lucent PGW. Based on the information shown in the exhibit, how many GTP-C tunnels are established between the SGW and the PGW? 

A. 1 

B. 2 

C. 3 

D. 4 

E. 6 

Answer: E 


Q64. Which of the following interfaces is not using the GTP-U protocol? 

A. The X2 interface 

B. The S1-U interface 

C. The S4 interface 

D. The S5 interface 

E. The SGi interface 

Answer: E