Alcatel-Lucent Alcatel-Lucent Certifications 4A0-103 Questions & Answers

• Question 1:

  Which MPLS label mode saves label mappings received from all peer LSRs?

  A. Conservative label retention

  B. Liberal label retention

  C. Downstream on demand

  D. Downstream unsolicited

  Correct Answer: B

• Question 2:

  Click on the exhibit.

  

  An LDP-over-RSVP tunnel is established between PE-1 and PE-2. Which of the following is NOT required to protect the LDP-over-RSVP tunnel?

  A. PE-1 requires T-LDP sessions to both ABR-1 and ABR-2.

  B. PE-1 requires a full mesh of RSVP-TE LSPs to all routers in area 1.

  C. ABR-1 requires T-LDP sessions to all ABRs in area 0.

  D. PE-1 requires fast reroute enabled on all RSVP-TE LSPs.

  Correct Answer: B

• Question 3:

  Click on the exhibit.

  

  The LSP "toR6" is configured with a fully strict path on an Alcatel-Lucent 7750 SR. Which of the following configurations is required to enable fast reroute for this LSP?

  A. Enable fast-reroute on all routers along the path. R1, R2, R4, and R6.

  B. Enable both link-protection and node-protection on router R1.

  C. Enable fast-reroute with either one-to-one or facility mode on this LSP.

  D. Enable link-protection only on router R4.

  Correct Answer: C

• Question 4:

  An IS-IS TE enabled router has an interface on a 500Mbps link and it is configured with a 25% subscription. If this interface is not used by any LSPs. what value will be shown in the Reservable Bandwidth sub-TLV?

  A. 125 Mbps

  B. 500 Mbps

  C. 625 Mbps

  D. 2000 Mbps

  Correct Answer: A

• Question 5:

  Which of the following regarding the location of an MPLS label is FALSE?

  A. The MPLS label value may be carried in an ATM header.

  B. The MPLS label value may be carried in a shim header.

  C. The MPLS label value may be carried in an OSPF header.

  D. The MPLS label value may be carried in a Frame Relay header.

  Correct Answer: C

• Question 6:

  Click on the exhibit.

  

  The partial command output from an Alcatel-Lucent 7750 SR is shown. Which of the following about this LSP path is TRUE?

  A. R4 (10.10.10.4) has established a link protection tunnel.

  B. R6 (10.10.10.6) has established a link protection tunnel.

  C. R2 (10.10.10.2) has established a node protection tunnel.

  D. R1 (10.10.10.1) has not established a node protection tunnel.

  Correct Answer: A

• Question 7:

  If an LSP needs to use an admin group, which of the following configurations is NOT required on the Alcatel-Lucent 7750 SR?

  A. Assign an admin group to a MPLS interface.

  B. Configure CSPF on the LSP.

  C. Configure at least one strict hop on the LSP path.

  D. Configure an "include" or "exclude" statement on the LSP path.

  Correct Answer: C

• Question 8:

  Which of the following about RSVP-TE summary refresh messages is TRUE?

  A. They list the RSVP session names that the router is refreshing,

  B. They list the Message IDs that the router is refreshing,

  C. They list the Tunnel IDs that the router is refreshing.

  D. They list the LSP I Ds that the router is refreshing.

  Correct Answer: B

• Question 9:

  Click on the exhibit.

  

  What is the possible reason that the label for prefix 192.10.1.2/32 is not active?

  A. The router does not have a route to reach to the peer 10.10.10.2/32.

  B. The router does not have a route to reach to the prefix 192.10.1.2/32.

  C. The router does not have an export policy defined to export the prefix 192.10.1.2/32 into LDP.

  D. The router receives an invalid label for the prefix 192.10.1.2/32 from its peer.

  Correct Answer: B

• Question 10:

  Which of the following fields does NOT appear in the MPLS label header?

  A. Label

  B. Frame check sequence

  C. Traffic Class (previously called Experimental)

  D. Time To live

  E. Bottom of stack bit

  Correct Answer: B