Nokia Nokia Certifications 4A0-C01 Questions & Answers

• Question 661:

  Which of the following describes what happens when facility backup fast reroute is enabled for a LSP? Choose three answers.

  A. Each PLR will signal a bypass tunnel that avoids the next-hop node or link.

  B. When a failure occurs, the PLR will push an additional label onto the label stack and start forwarding traffic onto its bypass tunnel.

  C. The ingress router will include a RRO object in the path message to indicate the routers that should be PLRs and MPs along the protected path.

  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 bypass tunnels.

  E. When the bypass tunnel is in use, the MP will include the RRO object in its PathErr message, with the local protection in use flag set to notify the ingress router that it is using the bypass tunnel.

  Correct Answer: ABD

• Question 662:

  Which one of the following statements regarding RSVP LSP configuration is true?

  A. LSPs must always terminate on a system ID.

  B. MPLS and RSVP must be enabled on all routers.

  C. Interfaces must be individually created in RSVP.

  D. Path definitions must include at least one hop entry.

  Correct Answer: B

• Question 663:

  Which of the following reservation styles can be used to prevent both the primary and secondary paths from booking resources on a common link?

  A. Fixed filter

  B. Shared explicit

  C. Standby explicit LSP

  D. Preemptive filter

  E. Link capacity filter

  Correct Answer: B

• Question 664:

  The following are statements about fields in the Hello packet that must match in order to form an OSPF adjacency. Which statement is correct?

  A. The area ID does not have to match.

  B. The value of the E bit in the options field does not have to match.

  C. The value of the Hello interval does not have to match.

  D. The value of the network mask does not have to match.

  E. The area ID, the E bit value, the Hello interval and network mask must all match.

  Correct Answer: E

• Question 665:

  Which of the following is NOT a characteristic of a floating static route?

  A. The primary and backup routes are to the same destination.

  B. The primary and backup routes appear in the routing table.

  C. The backup route is configured with a higher preference value.

  D. The next-hop of the primary and backup routes are different.

  Correct Answer: B

• Question 666:

  Click on the exhibit button below. Assume the following:

  

  -Each router's OSPF interfaces are in the areas shown.

  -

  Bidirectional LDP-over-RSVP tunnels extend from routers R1 to R3 and back over the path R1-R4-R5R3.

  -

  You enable fast reroute facility bypass on the R5-R3 RSVP LSP.

  -

  Router R5 acts as a PLR, protecting the R5-R3 link by building a bypass tunnel through router R2.

  You build a layer 2 VPN on routers R1 and R3, using the LDP-over-RSVP tunnels. What MPLS configuration step must you complete on router R2 for it to protect the end-to-end service?

  A. Enable LDP on the R2-R5 interface.

  B. Configure T-LDP sessions between routers R2 and R5 and R3.

  C. Configure LDP-over-RSVP support on router R2.

  D. Enable MPLS and RSVP on the router R2 network interfaces.

  E. Enable LDP on the R2-R5 and R2-R3 interfaces.

  Correct Answer: D

• Question 667:

  An Alcatel-Lucent 7750 SR has a port with the MAC address of 00;03:FA:AC:77: AF. The port is bound to an interface. If IPv6 is then enabled on that interface .what will the link- local address be?

  A. FE80::203:FAFF:FEAC:77AF/64

  B. 2000::203:FAFFFEAC:77AF/64

  C. FE80::3FAFF:FEAC:77AF/64

  D. FC00::203:FAFF:FEAC:77AF/64

  E. FC00::3:FAFF:FEAC:77AF/64

  Correct Answer: A

• Question 668:

  Click on the exhibit.

  

  Router R2 uses OSPF to advertise the network 192.168.3.0/24 to router R1. A route policy has been configured to reject the route on router R1.

  Why doesn't the route policy work?

  A. The prefix list "reject" should be "192.168.3.0/16 exact".

  B. Router R1 should be configured as an OSPF "asbr".

  C. The policy was not "committed" after creation.

  D. Router R1 cannot reject the route because OSPF does not support import policies

  Correct Answer: D

• Question 669:

  To configure 6over4 tunneling, where must indirect static routes be configured?

  A. On the CEs only.

  B. On the PEs only.

  C. On only the branch office CE.

  D. On both the CEs and PEs.

  Correct Answer: B

• Question 670:

  When a device receives a labeled packet, which of the following can occur?

  A. The packet can only be forwarded as an unlabeled packet.

  B. The packet can be forwarded as a labeled or unlabeled packet, depending on the received label value.

  C. The packet can be forwarded as a labeled or unlabeled packet, depending on the destination IP address in the payload

  D. The packet can only be forwarded as a labeled packet.

  Correct Answer: B