Valid Cisco 642-887 Exam Guide

By | January 5, 2020

The CCNP Service Provider Certification verifies your abilities to configure, implement, troubleshoot, and optimize service provider IP next-generation network infrastructures.

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Question No. 1

Which statement is correct regarding the default MPLS TTL behavior?

Answer: B

Question No. 2

Referring to the Cisco IOS XR show command output exhibit,

what are three possible reasons that the GigabitEthernet0/1/0/10 LDP IGP sync status is not ready? (Choose three.)

Answer: C, D, E

Question No. 3

Which Cisco IOS XR command should be used to identify if MPLS TE FRR is enabled?

Answer: A

The MPLS Traffic Engineering (TE)—Fast Reroute (FRR) Link and Node Protection feature provides link protection (backup tunnels that bypass only a single link of the label-switched path (LSP)), node protection (backup tunnels that bypass next-hop nodes along LSPs), and the following FRR features:

*Backup tunnel support

*Backup bandwidth protection

*Resource Reservation Protocol (RSVP) Hellos

Prerequisites for MPLS Traffic Engineering (TE)—Fast Reroute (FRR) Link and Node

Protection

Your network must support the following Cisco IOS features:

*IP Cisco Express Forwarding

*Multiprotocol Label Switching (MPLS)

Your network must support at least one of the following protocols:

*Intermediate System-to-Intermediate System (IS-IS)

*Open Shortest Path First (OSPF)

Before configuring FRR link and node protection, it is assumed that you have done the following tasks but you do not have to already have configured MPLS TE tunnels:

*Enabled MPLS TE on all relevant routers and interfaces

*Configured MPLS TE tunnels

Question No. 4

A network engineer must make a reservable maximum bandwidth of 75 Mbps on a Cisco ASR 9000 series router. Which configuration satisfies this requirement in Cisco IOS XR?

Answer: C

Question No. 5

Which feature should you configure to enable routers to maintain MPLS label information despite link flaps on an interface?

Answer: C

Question No. 6

Which protocol is used to send MPLS OAM traffic over an MPLS network?

Answer: D

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