Free Nokia 4A0-105 Exam Questions

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

Page: 1 / 32

Total 158 Questions | Updated On: Sep 10, 2025

Add To Cart

Question 1

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 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

Click on the exhibit below.

In the following diagram, traffic ingressing on SAP 1/2/3:1 will be passed to the layer-2 DPI device for inspection based on a filter policy applied to the ingress of the SAP. What feature should be enabled on SAP 1/2/1:100 and SAP 1/2/2:100 to ensure that incorrect information is not populated in the FDB of VPLS 1?

A : arning should be disabled on both SAPs connected to the DPI device to prevent FDB instability

B : MAC filter should be applied to both SAPs connected to the DPI to limit MAC learning on the port

C : IP filter should be applied to both SAPs connected to the DPI to prevent FDB instability

D : SAPs connected to the DPI should be configured with the "discard-unknown" feature to limit MAC learning on the port

Answer: A

Question 4

When ports configured with IEEE 802.3ah EFM are operationally down, what must the device do before declaring the ports are up?

A : device will try to force the other side up using the evaluating flag in the PDU

B : device will wait for the trasmit-interval of 5 before trying to rediscover the neighbor.

C : device will detect the port change and will wait for normal operation mode.

D : device will detect the port change and revert to discovery mode.

Answer: D

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: Sep 10, 2025

Add To Cart