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4A0-M02 Practice Exam Questions with Answers Nokia Mobile Gateways for the LTE Evolved Packet Core Certification

Question # 6

A dedicated bearer 6 has a total of six SDF filters. Based on the information shown in the exhibit, which of the following is the right order to apply the filters to the uplink traffic?

4A0-M02 question answer

A.

The filters: 0 (first), 1, 2, 3, 4, 5 (last).

B.

The filters: 2 (first), 3, 0, 1, 4, 5 (last).

C.

The filters: 1 (first), 3, 5 (last).

D.

The filters: 2 (first), 4, 0 (last).

E.

The filters: 3 (first), 5, 1 (last).

F.

The filters: 1 (first), 5, 3 (last).

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Question # 7

Which of the following statements is FALSE regarding the S1-U interface?

A.

It is the user plane interface used to connect the E-UTRAN and the EPC core.

B.

It relies on the GTP-C path to exchange the "Echo Request" / "Echo Response" messages between the eNodeB and the SGW.

C.

It may be used to transport user data during the inter-eNodeB handover.

D.

It uses the GTP-U protocol.

E.

The UDP protocol is used as the transport protocol.

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Question # 8

Based on the information shown in the exhibit, which of the following is the time interval used by the SGW to send out an "Echo Request" message over the GTP interface?

4A0-M02 question answer

A.

3 seconds

B.

5 seconds

C.

6 seconds

D.

60 seconds

E.

90 seconds

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Question # 9

On Nokia 7750 SGW, which of the following CLI commands can be used to check the number of times a handover procedure has been performed for a particular UE?

A.

Show mobile-gateway serving call-flow-stats

B.

Show mobile-gateway serving pdn-context imsi detail

C.

Show mobile-gateway serving ue-context imsi detail

D.

Show mobile-gateway serving bearer-context imsi detail

E.

Show mobile-gateway serving ref-point-stats s11

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Question # 10

Which of the following statements is FALSE regarding the Gx interface?

A.

It is a Diameter-based interface between the PCRF and the PCEF.

B.

The PCEF can act as a client or as a server for the Diameter connection depending on which application is running over the Gx interface.

C.

The PCEF receives the QoS information for a bearer from the PCRF over the Gx interface.

D.

It runs a vendor specific application identified by an application ID value of 16777238.

E.

It is never used to transport user data packets.

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Question # 11

During a UE detach procedure, which commands are exchanged over the S5 interface?

A.

Delete Session Request / Delete Session Response

B.

Terminate Session Request/Terminate Session Response

C.

Release Session Request / Release Session Response

D.

Delete Bearer Request/Delete Bearer Response

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Question # 12

After a UE attachment procedure, which GTP-C tunnels are established for the UE?

A.

S1-MME GTP-C tunnel, S11 GTP-C tunnel, and S5 GTP-C tunnel.

B.

S11 GTP-C tunnel and Gx GTP-C tunnel.

C.

S11 GTP-C tunnel and S5 GTP-C tunnel.

D.

S5 GTP-C tunnel and Gx GTP-C tunnel.

E.

S11 GTP-C tunnel, S5 GTP-C tunnel, and Gx GTP-C tunnel.

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Question # 13

Which of the following statements is TRUE when a UE is in the EMM_REGISTERED/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 can no longer be used 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 can no longer be used 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.

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Question # 14

During a UE detach procedure, which commands are exchanged over the gx interface?

A.

Delete Session Request / Delete Session Answer

B.

Credit Control Request Terminate/Credit Control Answer Terminate

C.

Release Session Request / Release Session Answer

D.

Credit Control Request Release / Credit Control Answer Release

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Question # 15

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?

4A0-M02 question answer

A.

10000 kbps

B.

15000 kbps

C.

20000 kbps

D.

30000 kbps

E.

55000 kbps

F.

None of the above answers are correct.

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Question # 16

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.

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Question # 17

Based on the information shown in the exhibit, when the SGW sends an uplink user IP packet to the PGW, which of the following is the GTP TEID value expected in the GTP packet header?

4A0-M02 question answer

A.

0xd05425

B.

0x4f00805

C.

0x21

D.

0x4f00825

E.

None of the above answers are correct

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Question # 18

Which of the following does not apply when an MG-ISM group is configured on an Nokia 7750 MG? (Choose two)

A.

A maximum of two MG-ISM cards may be configured in a group.

B.

The redundancy model must be configured and it is always displayed as one-to-one

C.

The MG-ISM cards configured in the same group must be contiguous.

D.

Only one MG-ISM card in a group may be configured as working,

E.

More than one MG-ISM card in a group may be configured as protect.

F.

The gateway instance must be specified during the group configuration.

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Question # 19

How many S11 GTP-C tunnels are established for a UE having:

- One default bearer to APN1, and

- One dedicated bearer to APN1, and

- One default bearer to APN2, and

- Two dedicated bearers to APN2?

A.

One

B.

Two

C.

Three

D.

Four

E.

Five

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Question # 20

Which of the following statements is FALSE regarding the PGW?

A.

The PGW terminates the IP sessions from a UE.

B.

The PGW enforces PCC rules and QoS policies.

C.

The PGW may provide gating control for user traffic.

D.

A UE may be served by only one PGW.

E.

A UE may receive more than one IP address from the PGW.

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Question # 21

Which of the following statements is FALSE regarding the communication between a UE and an eNodeB?

A.

The eNodeB terminates the air interface of the UE and manages the radio connection between the UE and the eNodeB.

B.

The eNodeB transmits the paging messages to an idle UE when the paging is required.

C.

During an IMSI attach, the UE informs the eNodeB which MME should be used to service it.

D.

The eNodeB performs the compression and encryption of the user data stream.

E.

A UE must go through an eNodeB to access the EPC core.

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