Jun 2016 updated: 642-887 spcore


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642-887 Product Description:
Exam Number/Code: 642-887 vce
Exam name: Implementing Cisco Service Provider Next-Generation Core Network Services (SPCORE)
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Certification: Cisco Certification
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2016 Jun 642-887 tut:

Q1. When implementing MPLS TE tunnels on Cisco IOS XR routers, what is the tunnel setup and hold priority value range, and which value has the highest priority?

A. 0-63, where 0 is the highest priority

B. 0-63, where 63 is the highest priority

C. 0-7, where 0 is the highest priority

D. 0-7, where 7 is the highest priority

Answer: C


Q2. What is an important requirement with MPLS applications like Layer 3 MPLS VPNs?

A. All the PE routers loopback addresses should be summarized to reduce the number of routing table entries in the core routers.

B. Targeted hellos are required between all the PE routers.

C. An end-to-end LSP is required between the PE routers.

D. The LSPs that are built between the PE routers must be symmetrical (bidirectional).

Answer: C


Q3. 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: ACD


Q4. Which four pieces of information are stored for each prefix in the LFIB? (Choose four.)

A. local label

B. outgoing label

C. next-hop IP address

D. outgoing interface

E. incoming interface

F. Layer 2 header rewrite information

Answer: ABCD


Q5. 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


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Q6. Referring to the show output exhibit, which statement is correct?


A. The P1 router is receiving label information for the 10.0.2.1/32 prefix from two LDP peers.

B. The P1 router is receiving label information for the 10.7.1.1/32 prefix from two LDP peers.

C. The P1 router is using the IMP-NULL local label for the 10.7.1.1/32 prefix because 10.7.1.1/32 is the loopback interface IP address on the P1 router.

D. The P1 router will perform PHP for the 10.7.1.1/32 and 10.7.10.1./32 prefixes.

Answer: B


Q7. Which Cisco IOS XR command should be used in order to enable LDP-IGP synchronization for the ISIS IGP protocol?

A. RP/0/RSP0/CPU0:R1(config-isis-if-af)#mpls ldp sync

B. RP/0/RSP0/CPU0:R1(config-isis)#mpls ldp sync

C. RP/0/RSP0/CPU0:R1(config-ldp)#isis ldp sync

D. LDP-IGP synchronization is not supported for the ISIS IGP protocol on Cisco IOS XR platforms

Answer: A


Q8. When using the tunnel mpls traffic-eng path-option 1 explicit name test command in Cisco MPLS TE tunnel configurations, the test explicit-path configuration will consist of a list of which values?

A. tunnel endpoint

B. resource class affinity

C. MPLS label

D. IP address

Answer: D


Q9. Refer to the Cisco IOS XR policy-map configuration exhibit.

What is wrong with the policy-map configuration?


A. missing the priority percent command under class one and class two

B. missing the police command under class one and class two

C. missing the police command under class three

D. missing the priority bandwidth command under class one and class two

E. missing the bandwidth command under class one and class two

Answer: B


Q10. 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



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