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: Oct 27, 2025

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Question 1

What is the maximum number of VLANs supported on a traditional Layer 2 switch?

A : 4094

B : 8190

C : 32768

D : 131071

Answer: A

Question 2

Click on the exhibit below.

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

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

B : SAP must be configured with the right VLAN tag

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

D : l of the above.

Answer: C

Question 3

Which of the following statements is false?

A : LS is a bridged LAN service

B : LS provides L2 VPN services to CEs

C : LS is a point-to-point service where CEs are presented with point-to-point virtual circuits.

D : that are members of the same VPLS service instance communicate with each other as if they are connected via a bridged LAN.

Answer: C

Question 4

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 5

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

Page: 1 / 32

Total 158 Questions | Updated On: Oct 27, 2025

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