Alcatel-Lucent 4A0-103 Exam Questions

Question 6 of 249

Click on the exhibit button below.
Exam 4A0-103: Question 6 - Image 1

Assuming that LSP R1-R2-R3 requests the default fast reroute configuration, which router becomes a DMP for the detour tunnels?

Router R1

Router R2

Router R3

Router R4

Router R5

Correct Answer: E

Question 7 of 249

Which of the following message types does RSVP use to set up an LSP? (Choose two)

Path message

iLER message

Resv message

LSP setup call request

eLER message

Correct Answer: A, C

RSVP (Resource Reservation Protocol) is used to set up an LSP (Label Switched Path) in MPLS (Multiprotocol Label Switching) networks. RSVP uses two main message types for this process: the Path message and the Resv message. The Path message is sent downstream from the head-end (ingress router) to the tail-end (egress router) of the LSP. The Resv message is sent upstream from the tail-end to the head-end to confirm the reservation of resources along the path. Therefore, the correct answer is Path message and Resv message.

Question 8 of 249

Assume that, on the Alcatel-Lucent 7750 SR, an LSP is configured with one-to-one FRR and node protection. Which of the following statements are FALSE?
(Choose two)

Each PLR signals a detour LSP that avoids the downstream node. If the downstream node cannot be avoided, a detour LSP that avoids the downstream link is signaled.

The detour LSP can take one or more hops before merging back on the protected LSP.

The merge point of the protected LSP must be the next-next-hop node

The ingress router will set the local protection desired flag in the session attribute object of the path message to inform all routers along the protected LSP path to establish detour LSPs.

The label recording desired flag must be set in the session attribute object in order for the PLR to know what label to swap when using the detour LSP.

Correct Answer: C, E

Question 9 of 249

Click on the exhibit button below.
Exam 4A0-103: Question 9 - Image 1

With fast reroute enabled, and given the following:
✑ The protected LSP path is R1-R2-R3.
✑ All links are of equal cost.
Which of the following statements is true? (Choose two)

Router R1 is the LSP originator and is also a PLR.

With one-to-one link or node protection, the detour LSP path is R1-R4-R5-R2-R3.

With one-to-one link or node protection, the detour LSP path is R1-R4-R5-R3.

If the R2-R3 link fails, router R3 becomes a PLR

None of the nodes can be protected with FRR.

Correct Answer: A, C

Question 10 of 249

Which of the following statements regarding LSP path configuration are true? (Choose three)

The path must include at least one hop.

The path may be used multiple times in a single LSP.

The path may comprise loose hop entries only.

The path must define the LSP's tail end.

The path may be used for multiple LSPs.

Correct Answer: C, D, E

The path may comprise loose hop entries only, meaning it does not have to be strictly defined. The path must define the LSP's tail end, meaning it has to include the destination address. Additionally, the same path may indeed be used for multiple LSPs, allowing for shared path definitions.