Alcatel-Lucent Alcatel-Lucent Certifications 4A0-110 Questions & Answers

• Question 21:

  Based on the configuration below, which statement best describes the reason why VPLS 101 is not up on all three nodes.

  

  

  A. Service VC id has to match on all three nodes

  B. SDP id has to match on all three nodes

  C. STP has to be enabled on all three nodes

  D. No SAP is configured on Node-2

  E. Mesh-sdp has to be used on all three nodes

  Correct Answer: A

• Question 22:

  Which one of the following CLI can be used to view all management VPLS configured on a 7x50?

  A. Show service service-using m-vpls

  B. Show service service-using

  C. Show router vpls detail

  D. Show service id base

  E. There is no CLI command to display management VPLS

  Correct Answer: B

• Question 23:

  A CSPF LSP with no bandwidth requirement is established from Node 1 (10.10.1.1) to Node 2 (10.10.1.2). OSPF-TE is enabled on all routers in the network. What commands can be used on Node 1 to determine if another LSP can be established to Node 2 with 400M bandwidth requirement? Choose all that apply.

  A. Show router lsp detail

  B. Show router ospf database detail

  C. Show router ospf opaque-database detail

  D. Tools perform router mpls cspf to 10.10.1.2 bandwidth 400

  E. Tools dump router mpls lspinfo

  Correct Answer: CD

• Question 24:

  A LSP is configured with one primary path and one secondary path as below. What configuration is required to make the LSP non-revertive. Choose the best answer.

  

  A. Turn off CSPF and remove all the bandwidth reservations

  B. Remove the primary path and configure both paths as secondary

  C. Under asp toRouter3? configure on-revertive

  D. It is not possible to configure the LSP as non-revertive

  E. MPLS fast re-route has to be enabled to make it non-revertive

  Correct Answer: B

• Question 25:

  What MPLS tunnel label(s) will be used in the data packet traveling on LSP toR4 FRR leaving from Node 3 to Node 4?

  

  A. 131069 131068

  B. 131068 3

  C. 131069

  D. 131068

  E. No label is used in the data packet

  Correct Answer: A

• Question 26:

  LSP toNode3 is configured on Node1, all hops configured in the lsp path and lsp destination address are reachable via IGP. Both primary and secondary LSP paths are down with failure code equal toRoute ToDestionation. What is the potential cause of this problem?

  

  A. A loose hop has to be configured in path toNode3-loose

  B. The secondary path should not be configured as standby path

  C. No traffic engineering information is exchanged by the IGP protocol

  D. CSPF cannot be enabled with strict hop path

  E. MPLS should not be enabled on interface toPod3

  Correct Answer: C

• Question 27:

  Based on the following CLI Output, why is the path toPod3-loose down?

  A. Path toPod3-loose is down because it is secondary path with no standby configured

  B. Path toPod3-loose is down because there is no explicit hop specified

  C. Path toPod3-loose is down because CSPF is not enabled

  D. Path toPod3-loose is down because the destination address 0.10.1.3 is not reachable

  E. Path toPod3-loose is not down because the failure code is oError

  Correct Answer: A

• Question 28:

  A SDP is created on Node-2 with the far end address set to Node-3. The SDP stays down on Node-2. Based on the following CLI output from Node 2, what is the caused of the problem?

  

  A. No LDP link session between Node 2 and Node 4

  B. No LDP link session between Node 4 and Node 3

  C. No LDP link session between Node 1 and Node 4

  D. No LDP link session between Node 3 and Node 2

  E. None of the above

  Correct Answer: B

• Question 29:

  Based on the show display below, what should be done to further trouble the LSP problem? Choose all valid actions.

  

  A. Check all the interface filters to make sure no LDP protocol is blocked

  B. Check all management filters to make sure no RSVP-TE protocol is blocked

  C. Verify all explicit hops are reachable via IGP

  D. Make sure MPLS is enabled on all appropriate interfaces

  E. Make sure LDP is enabled on all appropriate interfaces

  Correct Answer: BCD

• Question 30:

  The LDP session is not down between Node-1 and Node-2. Based on the following configurations, what is the cause of the problem?

  

  A. LDP targeted-session is enabled with no service configured

  B. OSPF adjacency is not up between Node-1 and Node-2

  C. Router id is not advertised by OSPF

  D. LDP is disabled on Node-1

  E. Traffic-engineering is not enabled on Node-2

  Correct Answer: C