Multiprotocol Label Switching

Here you have the best Alcatel-Lucent 4A0-103 practice exam questions

  • You have 43 total questions to study from
  • Each page has 5 questions, making a total of 9 pages
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  • This questions were last updated on May 8, 2025
Question 1 of 43

Which command can be used to verify the LDP settings for label distribution and retention?

    Correct Answer: B

    To verify the LDP settings for label distribution and retention, the appropriate command is 'show router ldp parameters'. This command provides information on the LDP parameters, including settings related to label distribution and retention.

Question 2 of 43

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

    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 3 of 43

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

    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.

Question 4 of 43

Click on the exhibit button below.

Given the configuration below, what is the system ID of the destination node?

    Correct Answer: B

    The system ID of the destination node is 10.1.4.78, as indicated by the 'to 10.1.4.78' under the lsp configuration. This refers to the destination address for the LSP (Label Switched Path).

Question 5 of 43

What is the common usage of the MPLS EXP bits?

    Correct Answer: D

    The MPLS EXP bits, also known as the Traffic Class field, are commonly used to carry Quality of Service (QoS) classification. This helps manage network traffic by assigning priority levels, ensuring that critical data can be transmitted with the necessary performance. This usage is standardized and widely implemented to facilitate efficient traffic management in MPLS networks.