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Q25. Which of the following statements is FALSE regarding the Tracking Area (TA)?
A. A TA is a set of eNodeBs that are defined by a UE itself.
B. A TA is the smallest geographical area in which a UE can roam without performing a Tracking Area Update (TAU) other than periodic TAU as required.
C. A Tracking Area Identity (TAI) is used to identify each tracking area.
D. The Tracking Area Identity (TAI) is assigned by the service provider.
E. One TA may be served by one or more than one MME.
Answer: A
Q26. 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
Q27. Which of the following statements are TRUE regarding the SDF templates /filters? (Choose three)
A. An SDF filter can identify an SDF flow by matching the information in the IP 5-tuple and the Layer-7 application
B. One SDF template can have only one SDF filter for each direction.
C. Onededicatedbearer can have more than one SDF template and multiple SDF filters.
D. Onededicatedbearer can have only one SDF template.
E. One SDF template can have multiple SDF filters for each direction,
F. Onededicatedbearer can have more than one SDF template.
Answer: C,E,F
Q28. Which of the following most accurately describes the CPM modules on an Alcatel-Lucent 7750 MG?
A. The CPM modules are responsible for load balancing the EPS bearers.
B. The CPM modules always choose the same MG-ISM group to handle all the bearers of a given UE.
C. Two CPM modules can be installed on an Alcatel-Lucent 7750 MG node. One CPM is in active state while the other is in hot-standby state.
D. The CPM module also includes the Switch Fabric function for the Alcatel-Lucent 7750 MG.
E. All of the above answers are correct.
Answer: E
Q29. Based on the information shown in the exhibit, what type of handover is performed when the UE moves from eNodeB2 to eNodeB4?
A. X2-based handover without SGW relocation
B. X2-based handover with SGW relocation
C. X2-based handover with MME relocation
D. S1-based handover with SGW relocation
E. S1-based handover with MME relocation
Answer: B
Q30. When a UE is roaming, which of the following interfaces is used when the visiting SGW needs to communicate with the UE's home PGW?
A. TheS1 interface.
B. The S5 interface.
C. The S8 interface.
D. The S10 interface.
E. The SGi interface.
Answer: C
61. Which of the following statements is FALSE regarding the UE network attachment procedure?
A. The UE is served by an eNodeB.
B. The eNodeB selects one MME to serve the UE.
C. The MME selects one SGW to serve the UE.
D. The SGW selects one PGW to serve the UE
E. The PGW selects one PCRF server if required.
Answer: D
Q31. Which of the following LTE interfaces are used for the communication of user data? (Choose one best answer)
A. The S1-MME interface and the S11 interface.
B. The S1-U interface.
C. The S5 interface.
D. The S1-U interface, the S5 interface and the LTE-Uu interface.
E. Only answers A, B and C are correct.
F. Only answers B and C are correct.
Answer: D
Q32. Which of the following statements is FALSE regarding the triggers of the Tracking Area Update (TAU) messages?
A. A TAU is sent when an active UE moves into a new TA that is not in the UE's current Tracking Area Identity (TAI) list.
B. A TAU is sent when a UE moves from the 2G/3G network back to the LTE network.
C. A TAU is sent when an idle UE moves into a new TA that is not in the UE's current TAI list.
D. A TAU is required to be sent periodically.
E. A TAU is never required as long as an idle UE stays in the same TA.
Answer: E