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Nokia 4A0-105 Exam Made Easy: Step-by-Step Preparation Guide

Questions 1

Click on the exhibit below.

4A0-105 Question 1

CE-A sends frames with 2 tags. If the SAP on PE-A is "sap 1/1/1:1 .*" and the SAP on PE-B is "sap 1/1/1:100.200" how many tags will there be on the frame when it egresses from the SAP on PE-B?

Options:
A.

0

B.

1

C.

2

D.

3

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Questions 2

The service-mtu of a VPLS using MPLS encapsulation is set to 9100. What is the minimum MTU value that can be set for the network port if fast re-route facility mode is used on the SDP LSP?

Options:
A.

9100

B.

9104

C.

9108

D.

9122

E.

9126

Questions 3

Click on the exhibit below.

4A0-105 Question 3

Based on the following configuration which VLANs will be managed by the management VPLS?

Options:
A.

VLANs 1-4094

B.

VLAN 0

C.

There is not enough information provided

D.

None, this is an invalid configuration

Questions 4

Click on the exhibit below.

4A0-105 Question 4

CE-A is on VLAN 200 and CE-B is on VLAN 300. Which of the following SAP ids can be configured on PE-A and PE-B to allow direct communication between CE-A and CE-B?

Options:
A.

PE-A will require a SAP id of "sap 1/1/1:200" and PE-B will require a SAP id of "sap 1/1/1:300.

B.

PE-A will require a SAP id of "sap 1/1/1" and PE-B will require a SAP id of "sap 1/1/1".

C.

PE-A will require a SAP id of "sap 1/1/1:0" and PE-B will require a SAP id of "sap 1/1/1:0".

D.

PE-A will require a SAP id of "sap 1/1/1:*" and PE-B will require a SAP id of "sap 1/1/1:*".

Questions 5

What action will be taken when an MPLS router receives a frame with a label that does not exist in the LFIB?

Options:
A.

The frame will be flooded.

B.

The frame will be discarded.

C.

The frame will be fragmented.

Questions 6

How does PBB forward broadcast, unknown-unicast and multicast traffic from a B-VPLS to an l-VPLS?

Options:
A.

The receiving PE checks the l-TAG in the l-SID to determine if there is a local l-VPLS on the node.

B.

The receiving PE checks the l-SID in the l-TAG to determine if there is a local l-VPLS on the node.

C.

The receiving PE checks the service label in the mpls header to determine if there is a local l-VPLS on the node.

D.

The receiving PE checks the multicast B-DA to see if an l-SID has been mapped to the B-DA that matches a local l-VPLS on the node.

Questions 7

Click on the exhibit below.

4A0-105 Question 7

Assume PE-B expects avian tag as part of the RFC 4762 (Martini) encapsulation. How must PE-A be configured?

Options:
A.

The port that the SAP belongs to must have the correct ether type configured.

B.

The SAP must be configured with the right VLAN tag.

C.

The SDP VC type must be configured as type VLAN and the correct vlan-vc-tag must be specified.

D.

All of the above.

Questions 8

Click on the exhibit below.

4A0-105 Question 8

A new router named PE-D is to be directly connected to PE-C and is required to be added to the existing VPLS 300. The design requires the least amount of signaling, the least amount of configuration changes for existing sites and the new site has to have access to all existing sites. How should the new site be added to VPLS 300?

Options:
A.

Configure a mesh-sdp between all existing PE routers and the new PE router

B.

Configure a mesh-sdp between PE-C and PE-D

C.

Configure a spoke-sdp between PE-C and PE-D.

D.

It is not possible to meet the design requirements.

Questions 9

In RSTP, how is the root bridge selected?

Options:
A.

The switch with the highest bridge-id is selected as root.

B.

The switch with the lowest bridge-id is selected as root.

C.

The switch with the highest MAC address is selected as root

D.

The switch with the lowest MAC address is selected as root.

Questions 10

A LAG is configured with LACP passive mode enabled. When will LACP packets be sent?

Options:
A.

On initialization and then every hello-interval.

B.

Only after receiving LACP packets.

C.

Every 1 second.

D.

Never.

Exam Code: 4A0-105
Certification Provider: Nokia
Exam Name: Nokia Virtual Private LAN Services
Last Update: Jan 24, 2025
Questions: 156