Free Nokia 4A0-105 Exam Questions

Become Nokia Certified with updated 4A0-105 exam questions and correct answers

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Total 158 Questions | Updated On: Dec 17, 2025

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Question 1

How is it possible for multiple services to be carried over the same MPLS LSPs?

A : ltiple SDPs must be configured and bound to the LSPs for this to be possible.

B : It is not possible to carry multiple services over the same MPLS LSPs.

C : vc-label is signaled per service.

D : vc-id is part of the data plane and maps the traffic to the appropriate service.

Answer: A

Question 2

Consider a large metro-to-metro VPLS network interconnected with a mesh of mesh-SDPs. Which of the following statements does NOT apply to this situation?

A : ndwidth and replication inefficiency can occur on inter-metro links if there is a lot of multicast traffic

B : number of control sessions grows exponentially in a fully meshed network

C : anning-tree is required to prevent loops when using mesh SDPs on the inter-metro links.

D : twork touches increase with each node added to the mesh.

Answer: C

Question 3

If the max remote-age timer of a B-VPLS is reached, what happens to the remotely learned MAC addresses in the l-VPLS service?

A : ere is no effect. The MAC addresses for the l-VPLS age out independently of the aging of B-VPLS addresses

B : MAC addresses for the l-VPLS will age out immediately following the remote-age out of the backbonemacs of the B-VPLS

C : default, the remote-age timer of the B-VPLS is configured to 0 and addresses do not age out. The lVPLS uses its own timer.

D : The same timer is used for B-VPLS and l-VPLS addresses on the node.

Answer: B

Question 4

How is the Primary Bridge chosen in a VPLS?

A : PE devices participating in the VPLS mesh run a separate Spanning Tree instance in the Core. The Primary Bridge is the Root Bridge for the VPLS mesh.

B : PE devices participating in the VPLS mesh determine which bridge is closest to Root Bridge. This bridge becomes the Primary Bridge.

C : PE devices participating in the VPLS mesh determine which bridge has the lowest bridge-id. This bridge becomes the Primary Bridge.

D : PE devices participating in the VPLS mesh determine which bridge is the Root Bridge. This becomes the Primary Bridge.

Answer: B

Question 5

Click on the exhibit below.

Based on the output below which of the following statements is true? (Choose 2)

A : LS1500 is a user VPLS

B : LS 1500 is management VPLS.

C : anning tree BPDUs for the management VPLS are tagged.

D : anning tree BPDUs for the management VPLS are untagged.

Answer: A,D

Page: 1 / 32

Total 158 Questions | Updated On: Dec 17, 2025

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