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4A0-M02 Nokia Mobile Gateways for the LTE Evolved Packet Core Questions and Answers

Questions 4

Which of the following statements is FALSE regarding Key Performance Indicator/Key Capacity Indicator (KPI/KCI)?

Options:

A.

KPI /KCI counters are supported on both Nokia 7750 SGW and 7750 PGW.

B.

The cf:\mob-gw-stats directory contains the current records.

C.

The cf:\mob-gw directory contains all closed records.

D.

KPI/KCI counters are used to debug real-time issues on the mobile gateway.

E.

An XML file is created and stored in the CPM's flash card.

F.

None of the above statements are false.

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Questions 5

Which of the following parameters best describes the rate-limiting associated with a GBR bearer?

Options:

A.

The GBR

B.

The APN-AMBR

C.

The MBR

D.

The GBR and the MBR

E.

The UE-AMBR

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Questions 6

Based on the information shown in the exhibit, which of the following is the MBR/GBR value for Bearer 6 in the DL direction?

Options:

A.

15000/10000 kbps

B.

30000/20000 kbps

C.

45000/30000 kbps

D.

60000/40000 kbps

E.

None of the above answers are correct.

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Questions 7

Based on the information shown in the exhibit, which of the following statements is TRUE regarding the UE state and its default bearer?

Options:

A.

The UE is in the active state. The default EPS bearer is fully established.

B.

The UE is in the active state. The default EPS bearer is not fully established.

C.

The UE is in the idle state. The default EPS bearer is fully established.

D.

The UE is in the idle state. The default EPS bearer is not fully established.

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Questions 8

Which of the following does not apply during the CPM selection of an MG-ISM card?

Options:

A.

The CPM load balances amongst all configured MG-ISM groups.

B.

The CPM load balances based on the number of sessions currently handled by each MG-ISM group

C.

All sessions established for a given UE are handled by the same MG-ISM group.

D.

The selected MG-ISM card is responsible for bearer management and TEID assignment.

E.

All of the above statements apply.

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Questions 9

During an S1-based handover with MME relocation, which network entity requests the creation of an indirect data forwarding tunnel by sending a "Create Indirect Data Forwarding Tunnel Request" message to the SGW?

Options:

A.

The source MME.

B.

The target MME.

C.

The source eNodeB.

D.

The target eNodeB.

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Questions 10

Which of the following statements is FALSE regarding the GTP tunnel?

Options:

A.

The GTP-C tunnel is used to carry the signaling messages.

B.

The GTP-U tunnel is used to carry the user data.

C.

On the SGW, there is only one GTP-C tunnel over the S5 interface to handle all the bearers to reach the same PGW.

D.

A GTP-C tunnel may be associated with multiple GTP-U tunnels over the S5 interface.

E.

There is a one-to-one mapping between the S1 bearer and the S1-U GTP-U tunnel.

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Questions 11

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?

Options:

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.

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Questions 12

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?

Options:

A.

Downlink Data Notification

B.

Downlink Data Notification Ack

C.

Modify Bearer Request

D.

Modify Bearer Response

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Questions 13

Which of the following statements most accurately describes the MME?

Options:

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.

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Questions 14

On an Nokia 7750 PGW, which of the following is a mandatory step required to set up a Diameter connection to a PCRF server?

Options:

A.

Create a Diameter profile.

B.

Create a Diameter Peer profile.

C.

Assign the Diameter profile to the Diameter Peer profile

D.

Assign the Diameter Peer profile to the Gx interface.

E.

All of the above answers are required.

F.

Only answers B and D are required.

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Questions 15

On Nokia 7750 SGW, which of the following CLI commands is used to obtain the output displayed in the exhibit?

Options:

A.

show mobile-gateway serving ref-point-stats s11

B.

show mobile-gateway serving ref-point-stats s5

C.

show mobile-gateway serving ref-point-peers s11

D.

show mobile-gateway serving ref-point-peers s5

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Questions 16

Based on the information shown in the exhibit, which procedure has been executed on the SGW?

Options:

A.

UE Triggered Service Request procedure

B.

Network Triggered Service Request procedure

C.

UE Initiated Dedicated Bearer Activation procedure

D.

Network Initiated Dedicated Bearer Activation procedure

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Questions 17

Based on the information shown in the exhibit, which of the following is the MBR/GBR value for Bearer 5 in the DL direction?

Options:

A.

15000/10000 kbps

B.

30000/20000 kbps

C.

45000/30000 kbps

D.

60000/40000 kbps

E.

None of the above answers are correct

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Questions 18

Which of the following statements is FALSE regarding the UE attachment procedure?

Options:

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

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Questions 19

Which of the following statements is TRUE when the Nokia 7750 MG receives a GTP packet that has a valid TEID?

Options:

A.

The ingress IOM forwards the packet directly to the MG-ISM module for further processing.

B.

The ingress IOM drops the packet.

C.

The ingress IOM forwards the packet to the CPM for further processing.

D.

The Nokia 7750 MG forwards the packet to its IP destination by looking into the local IP routing table.

E.

None of the above answers are correct.

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Questions 20

What is the purpose of indirect data tunnels established for a particular UE?

Options:

A.

The indirect data tunnels are used during handovers to forward downlink data from the target eNodeB to the source eNodeB.

B.

The indirect data tunnels are used during handovers to forward uplink data from the target eNodeB to the source eNodeB.

C.

The indirect data tunnels are used during handovers to forward downlink data from the source eNodeB to the target eNodeB.

D.

The indirect data tunnels are used during handovers to forward uplink data from the source eNodeB to the target eNodeB.

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Questions 21

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?

Options:

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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Exam Code: 4A0-M02
Exam Name: Nokia Mobile Gateways for the LTE Evolved Packet Core
Last Update: Nov 23, 2024
Questions: 140