Real Questions For Cisco 642-887 Preparaion

The main focus of this CCNP Service Provider Certification exam is Implementing Cisco Service Provider Next-Generation Core Network Services.

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Question No. 1

On Cisco routers, which QoS marker is only locally significant?

Answer: D

Question No. 2

Referring to the show output exhibit, which statement is correct?

Answer: B

Question No. 3

Which method is used to mark traffic matched by class-map MY_CLASS as Expedited Forwarding?

Answer: C

Question No. 4

Which two features are used to provide Cisco MPLS TE node and link protection? (Choose two.)

Answer: B, C

Question No. 5

On the Cisco ASR9K router, when using the bandwidth command to specify the minimum guaranteed bandwidth to be allocated for a specific class of traffic, what will be used as the queuing algorithm?

Answer: B

Class based weighted fair queuing (CB-WFQ) was initially released without the support of a priority queuing system, thus it could not guarantee the delay and jitter (delay variation) requirements of real-time, interactive voice and video conversations. Since for CBWFQ, the weight for a packet belonging to a specific class is derived from the bandwidth assigned to the class, which in turn determines the order in which packets are sent.

All packets are serviced fairly based on weight and no class of packets may be granted strict priority. This scheme poses problems for voice traffic that is largely intolerant of delay, especially variation in delay

Question No. 6

A companyasks an engineer to provide an explanation for implementing MPLS DiffServ-TE services. Which option is a DiffServ-TE fundamental concept that should be highlighted?

Answer: D

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