Alcatel-Lucent 4A0-M02 - Alcatel-Lucent Mobile Gateways for the LTE Evolved Packet Core Exam

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Total 140 questions

Which of the following statements is FALSE regarding the eNodeB?

  • A. The eNodeBs maybeinterconnectTEIDwith each other via anX2 interface.
  • B. The eNodeB is an element of the EPC core.
  • C. The eNodeBs areconnectedto the EPC core via the S1 interface.
  • D. During an IMSI attach, the eNodeB selects an MME to service the UE.
  • E. The eNodeB performs the compression and encryption of the user data stream.


Answer : B

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.


Answer : F

A UE needs to get an IP address before it can communicate to any PDN over the LTE network. Which of the following statements are FALSE regarding the process of the IP address allocation? (Choose two)

  • A. A PGW may obtain an IP address from a RADIUS server and assign it to the UE.
  • B. A PGW may assign the IP address from its local address pools.
  • C. An SGW may obtain a static IP address from the HSS server and assign it to the UE.
  • D. An SGW may obtain an IP address from a RADIUS server and assign it to the UE.
  • E. A PGW may obtain an IP address from a DHCP server and assign it to the UE.


Answer : C,D

Which of the following statements is TRUE regarding the IP connectivity between a UE and a PDN?

  • A. A UE gets an IPv4 address and/or an IPv6 prefix per APN.
  • B. A PGW forwards the UE's IP packets to the PDN based on the address of the PDN server.
  • C. When a UE sends an IP packet to a PDN over the EPC core, the eNodeB forwards theencapsulatedpacket to the SGW by looking into its IP routing table to determine how to reach the PDN server.
  • D. The SGW forwards the UE's IP packets to the PGW based on the address of the PDN server.
  • E. Only answers C and D are correct.
  • F. Only answers A and B are correct.


Answer : F

In a 3G network, which of the following is used to build a PDP context between a UE and the GGSN when a direct tunnel is not used?

  • A. An end-to-end GTP tunnel between the UE and the GGSN.
  • B. A Radio Access Bearer between the UE and the NodeB and a GTP tunnel between the NodeB and the GGSN.
  • C. A Radio Access Bearer between the UE and the SGSN and a GTP tunnel between the SGSN and the GGSN.
  • D. A Radio Access Bearer between the UE and the SGSN.
  • E. None of the above answers are correct.


Answer : C

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Total 140 questions