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Cisco CCNP Service Provider 642-887

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試験科目:Cisco 「Implementing Cisco Service Provider Next-Generation Core Network Services」




NO.1 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?
A. custom queuing
E. priority queuing
Answer: B

Cisco   642-887認定証   642-887   642-887過去問

NO.2 On the Cisco IOS XR, which MQC configuration is different than on the Cisco IOS and IOS XE?
A. On the Cisco IOS XR, WRED can only be applied in the output direction.
B. On the Cisco IOS XR, marking can only be applied in the input direction.
C. On the Cisco IOS XR, LLQ can be applied in the input or output direction.
D. On the Cisco IOS XR, LLQ can use up to four priority queues: level 1, level 2, level 3, and level 4.
Answer: C

Cisco   642-887   642-887参考書   642-887問題集

NO.3 DS-TE implementations on Cisco routers support which bandwidth pool(s) and class type(s)? (Choose
A. global pool only
B. subpool only
C. global pool and subpool
D. class-type 0 only
E. class-type 1 only
F. class-type 0 and class-type 1
Answer: C,F

Cisco   642-887参考書   642-887認定証   642-887過去問

NO.4 On Cisco routers, how is hierarchical QoS implemented?
A. Within the parent policy, reference another child policy using the policy-map command.
B. Within the child policy, reference another parent policy using the policy-map command.
C. Use the policy-map command within a service-policy to implement nested policy-maps.
D. Within the parent policy-map, reference another child policy-map using the service-policy command.
Answer: D

Cisco認定証   642-887   642-887   642-887認定証   642-887   642-887

NO.5 When implementing MPLS DS-TE on Cisco IOS XR routers, all aggregate Cisco MPLS TE traffic is
mapped to which class type by default?
A. class-type 0 (bandwidth global pool)
B. class-type 1 (bandwidth subpool)
C. class-type 2 (bandwidth priority)
D. class type class-default (bandwidth best-effort)
Answer: A

Cisco   642-887認定資格   642-887参考書   642-887

NO.6 What is the correct formula for determining the CIR.?
A. CIR = Bc/Tc
B. CIR = Bc x Tc
C. CIR = Tc/Bc
D. CIR = Bc + Be
E. CIR = Tc/(Bc+Be)
F. CIR = (Bc+Be)/Tc
Answer: A

Cisco   642-887   642-887認定試験

NO.7 Which field in the MPLS shim header is used to support different QoS markings?
A. IP precedence
D. ToS
E. S
F. Label
Answer: C

Cisco   642-887   642-887参考書

NO.8 When configuring LLQ (strict priority queue) on a traffic class using the Cisco IOS XR priority command
on a Cisco ASR9K router, which additional QoS command is required for this traffic class?
A. shape
B. police
C. random-detect
D. bandwidth
Answer: B

Cisco練習問題   642-887   642-887   642-887

NO.9 On a Cisco IOS XR router, which mechanism protects the router resources by filtering and policing the
packets flows that are destined to the router that is based on defined flow-type rates?
C. Committed Access Rate
D. Control Plane Policing
E. Management Plane Protection
F. NetFlow
Answer: B

Cisco過去問   642-887認定資格   642-887認定試験   642-887   642-887   642-887

NO.10 Which three conditions can occur when metering traffic using a dual token bucket traffic policing QoS
mechanism on Cisco routers? (Choose three.)
A. conform
B. pass
C. violate
D. exceed
E. burst
F. matched
Answer: A,C,D

Cisco   642-887   642-887認定証   642-887

投稿日: 2012/7/6 12:22:04  |  カテゴリー: Cisco  |  タグ: Cisco642-887