Free Nokia 4A0-100 Exam Questions

Become Nokia Certified with updated 4A0-100 exam questions and correct answers

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Total 40 Questions | Updated On: Jun 04, 2025

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Question 1

What operation is performed by an egress Label Edge Router (eLER) when it receives an MPLS labeled packet?

A : forwards the packet to the next LSR without altering the MPLS label.

B : swaps the MPLS label and forwards the packet to the next LSR.

C : pushes a new MPLS label and forwards the packet to the next LSR.

D : It pops the MPLS label and forwards the packet to the next IP router.

Answer: D

Question 2

If a 5-port LAG is configured with the option of ‘port-threshold 2 action down’, and dynamic-cost is enabled, what will happen if the total number of operational links in the LAG is 2?

A : The LAG cost is equal to the link cost divided by 3

B : LAG cost is equal to the link cost.

C : LAG is operationally down.

D : LAG cost is equal to the link cost divided by 5

Answer: C

Question 3

Which of the following enables service providers to support multiple customers with the same VLAN ID over the same backbone?

A : VLAN Trunking

B : VLAN Stacking

C : VLAN Tagging

D : VLAN Routing

Answer: B

Question 4

Which of the MPLS routers is responsible for pushing new labels for LSP A and LSP B?

A : Router R1 pushes labels for both LSP A and LSP B.

B : Router R4 pushes labels for both LSP A and LSP B.

C : Router R1 pushes labels for LSP A, while router R4 pushes labels for LSP B.

D : Router R4 pushes labels for LSP A, while router R1 pushes labels for LSP B.

Answer: A

Question 5