Nokia Nokia Certifications 4A0-C01 Questions & Answers

• Question 551:

  Click on the exhibit button below.

  

  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)

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

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

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

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

  E. None of the nodes can be protected with FRR.

  Correct Answer: AC

• Question 552:

  An OSPF backbone area contains Type 5 LSAs. If an attached area receives only Summary LSAs from the backbone area, what type of area is the attached area?

  A. Normal

  B. Stub

  C. Totally stubby

  D. Totally NSSA

  Correct Answer: B

• Question 553:

  Which of the following statements regarding RSVP-TE is FALSE?

  A. RSVP-TE operates in a downstream unsolicited label advertisement mode.

  B. RSVP-TE makes use of ordered control mode.

  C. RSVP-TE is an MPLS signaling protocol, based on the resource reservation protocol.

  D. RSVP-TE enables the establishment of explicitly routed LSPs that can be automatically routed away from network failures

  E. RSVP-TE supports explicitly routed LSPs using either loose or strict route definitions.

  Correct Answer: A

• Question 554:

  Click on the exhibit.

  

  Assume that OSPFv3 is properly configured on all routers and that router R4 advertises its system prefix into Area 0.

  Which of the following best describes how router R5 learns router R4's IPv6 system prefix?

  A. With a Router LSA originated by router R1.

  B. With a Router LSA originated by router R5.

  C. With a Router LSA originated by router R4.

  D. With an Inter-Area Prefix LSA originated by router R1.

  E. With an Inter-Area Prefix LSA originated by router R5.

  F. With an Inter-Area Prefix LSA originated by router R4.

  Correct Answer: D

• Question 555:

  Which of the following statements regarding admin groups is FALSE?

  A. Admin groups can be configured using the command "configure>router>mpls>admin- group".

  B. CSPF uses the information defined by admin groups when paths are computed for constraint-based LSPs.

  C. By default, interfaces for which MPLS has been enabled are in the default admin group.

  D. A LSP can make use of admin groups for constraint-based path calculations by including or excluding the admin group

  Correct Answer: C

• Question 556:

  Which of the following statements best describes the function of an OSPF Type 4 LSA?

  A. A Type 4 LSA is originated by an ABR to describe a route to an ASBR to routers outside the area.

  B. A Type 4 LSA is originated by an ASBR to describe a route to itself to routers outside the area.

  C. A Type 4 LSA is originated by an ABR that is connected to a stub area. The LSA is injected into the backbone area to provide routing information.

  D. A Type 4 LSA is originated by an ABR that is connected to a stub area. The LSA is injected into the stub area to provide routing information.

  Correct Answer: A

• Question 557:

  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)

  A. 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.

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

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

  D. 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.

  E. 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: CE

• Question 558:

  In MPLS, at which device are packets assigned to a FEC?

  A. LSR

  B. LER

  C. eLER

  D. iLER

  E. CE

  Correct Answer: D

• Question 559:

  Which of the following is NOT a field in the IPv6 header?

  A. Next Header

  B. Traffic Class

  C. Hop Limit

  D. Fragment Offset

  E. Flow Label

  Correct Answer: D

• Question 560:

  Which of the following describes the purpose of 6over4 tunneling?

  A. To give IPv6 traffic preferential routing over IPv4 routes.

  B. To allow core routers running only IPv6 protocols to carry IPv4 traffic.

  C. To give IPv4 only routers the ability to route based on IPv6 addresses.

  D. To allow IPv6 traffic to pass through an IPv4 network.

  Correct Answer: D