Nokia 4A0-M02 Exam Practice Test Instant Access

Question 1

Which of the following statements most accurately describes the Diameter protocol?

AThe Diameter is a peer-to-peer protocol that uses the TCP or SCTP as the transport protocol.

BA Diameter peer could act as a Diameter client or a Diameter server to its remote peer.

CThe Alcatel-Lucent 7750 PGW acts as a Diameter client to the PCRF server via the Gx interface.

DThe Diameter protocol uses TCP and SCTP port number 3868.

EAll of the above answers are correct.

FOnly answers A and B are correct.

Answer : E

Question 2

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?

ADownlink Data Notification

BDownlink Data Notification Ack

CModify Bearer Request

DModify Bearer Response

Answer : C

Question 3

Based on the information shown in the exhibit, and assuming this is the only bearer present, what the action is taken by the SGW when:

- The SGW receives a GTP packet over its S5 interface, and

- The TEID value in the GTP header is set to 0x802d25?

AThe packet is forwarded to the eNodeB

BThe packet is buffered.

CThe packet is dropped.

DThe packet is forwarded to the MME.

Answer : C

Question 4

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?

AAn end-to-end GTP tunnel between the UE and the GGSN.

BA Radio Access Bearer between the UE and the NodeB and a GTP tunnel between the NodeB and the GGSN.

CA Radio Access Bearer between the UE and the SGSN and a GTP tunnel between the SGSN and the GGSN.

DA Radio Access Bearer between the UE and the SGSN.

ENone of the above answers are correct.

Answer : C

Question 5

Which of the following statements most accurately describes the MME?

AThe MME selects the SGW and the PGW for a given UE.

BThe MME is responsible for the bearer management.

CThe MME communicates with both the E-UTRAN and the EPC via GTP-C tunnels.

DThe MME performs the user authentication and authorization using the information provided by the HSS

EAll of the above answers are correct.

FOnly answers A, B and D are correct.

Answer : F

Question 6

Which of the following statements is FALSE regarding the triggers of the Tracking Area Update (TAU) messages?

AA 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.

BA TAU is sent when a UE moves from the 2G/3G network back to the LTE network.

CA TAU is sent when an idle UE moves into a new TA that is not in the UE's current TAI list.

DA TAU is required to be sent periodically.

EA TAU is never required as long as an idle UE stays in the same TA.

Answer : E

Question 7

Which of the following statements is FALSE regarding the UE paging process?

AThe SGW performs downlink data buffering while the S1 bearer is being established.

BThe SGW initiates the paging messages towards the UE.

CThe PGW is not aware of the paging process.

DThe UE initiates the service request procedure once it receives the paging message.

EThe paging procedure is controlled by the MME.

Answer : B

Nokia Mobile Gateways for the LTE Evolved Packet Core 4A0-M02 Exam Practice Test