Which of the following statements most accurately describes the MME?
A. The MME selects the SGW and the PGW for a given UE.
B. The MME is responsible for the bearer management.
C. The MME communicates with both the E-UTRAN and the EPC via GTP-C tunnels.
D. The MME performs the user authentication and authorization using the information provided by the HSS
E. All of the above answers are correct.
F. Only answers A, B and D are correct.
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.
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.
Which entity decides when a handover procedure needs to be performed?
A. The UE.
B. The source eNodeB.
C. The target eNodeB.
D. The MME.
E. The SGW.
Which of the following statements are TRUE regarding the Predefined PCC rules? (Choose two) A. The Predefined PCC rules are preconfigured on the PCRF.
B. The Predefined PCC rules are preconfigured on the PCEF.
C. The Predefined PCC rules are preconfigured on the MME.
D. The Predefined PCC rules are activated or deactivated by the PCEF at any time.
E. The Predefined PCC rules are activated or deactivated by the PCRF at anytime.
Which of the following statements most accurately describes the EPS bearers?
A. A UE can have only one default bearer.
B. A UE may have more than one dedicated bearer.
C. Each EPS bearer may provide different QoS treatment for its traffic.
D. EPS bearers that connect a given UE to a single APN use different IP subnets.
E. Only answers A, B and C are correct.
F. Only answers B and C are correct.
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.
Assume that dynamic PCC rules are used on the PGW. When an AF server initiates the establishment of a dedicated bearer for a UE, which of the following messages are exchanged between the PCRF and the PCEF?
A. The RAR/RAA messages
B. The CSR/CSResp messages
C. The CCR/CCA messages.
D. The CSR/CSResp and the CCR/CCA messages
E. The CSR/CSResp and the RAR/RAA messages.
Which of the following statements is FALSE regarding the UE attachment procedure?
A. As a result of this procedure, a default bearer must be established
B. As a result of this procedure, a dedicated bearer must be established
C. As a result of this procedure, the UE is registered with the network
D. As a result of this procedure, the UE is authenticated by the network
E. As a result of this procedure, the UE has an IP connectivity to an APN
Based on the information shown in the exhibit, how many EPS bearers has the PGW created in total for all UEs?
A. 6
B. 5
C. 4
D. 3
E. 2
F. 1
