642-887 Latest Exam (Aug 2018)

[Free] 2018(Aug) Ensurepass Cisco 642-887 Dumps with VCE and PDF 51-60

September 14, 2018

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2018 Aug Cisco Official New Released 642-887
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Implementing Cisco Service Provider Next-Generation Core Network Services

Question No: 51

Referring to the Cisco IOS XR configuration exhibit,

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which labels will be advertised by the router with this configuration?

  1. Only the label for will be advertised to all the LDP peers.

  2. Labels for all prefixes will be advertised to the LDP peer.

  3. Labels for all prefixes will be advertised to all the LDP peers.

  4. No labels will be advertised to any LDP peers.

Answer: A

Question No: 52

Referring to the traceroute output exhibit that is shown,

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which statement is correct?

  1. There is no problem with the end-to-end LSP as indicated by the successful trace.

  2. Normal PHP operation is performed by the hop 4 router.

  3. The end-to-end LSP is broken at hop 4.

  4. At each hop, each LSR is able to perform label swapping.

Answer: C

Question No: 53

An engineer is allocating a determined amount of bandwidth to a customer Cisco MPLS TE tunnel to guarantee its availability on a 24/7 SLA type. Which option must be configured to make sure the customer is able to use the bandwidth agreed on the SLA?

  1. RSVP that guarantees bandwidth availability end-to-end

  2. Cisco MPLS TE tunnel to signal the bandwidth required

  3. a QoS policy to reinforce the RSVP bandwidth reservation

  4. overprovisioning to guarantee bandwidth

Answer: C

Question No: 54

LDP session protection uses which one to maintain the LDP session between LDP neighbors?

  1. LDP NSF

  2. LDP NSR

  3. backup-targeted LDP hellos

  4. BFD

  5. LDP-IGP synchronization

Answer: C

Question No: 55

Refer to the exhibit. Which configuration error prevents this traffic-shaping policy from working?

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  1. The WAN interface is starting to drop packets because no queuing mechanism is implemented.

  2. Traffic-shaping policies are applied only in the outbound direction.

  3. The class_A configuration shape peak is used to maximize the serial interface performances.

  4. The service-policy command is applied only on logical or channeled interfaces.

Answer: B

Question No: 56

An LDP session is established between two neighbors. Over which protocol and port number do they maintain their adjacency?

  1. TCP 711

  2. UDP 646

  3. UDP 711

  4. TCP 646

Answer: D

Question No: 57

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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.)

  1. GigabitEthernet0/1/0/10 is not configured to run LDP.

  2. Graceful restart is not configured on the peer.

  3. The LDP neighbor on GigabitEthernet0/1/0/10 is not up.

  4. The OSPF neighbor on GigabitEthernet0/1/0/10 is not up.

  5. LDP is up on GigabitEthernet0/1/0/10, but no label bindings have been received from the peer.

  6. GigabitEthernet0/1/0/10 is a member link of Bundle-Ether9000.

Answer: C,D,E

Question No: 58

Which two traffic types are recognized by NBAR default configuration settings? (Choose two.)


  2. Sun RPC

  3. TCP

  4. UDP


Answer: A,B

Question No: 59 DRAG DROP

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Question No: 60

Layer 2 VPN services that are offered by traditional service providers using a SONET/SDH backbone can be implemented by service providers using an IP/MPLS backbone with which MPLS feature?

  1. LSP stitching

  2. AToM

  3. virtual private WAN services

  4. cell-mode MPLS

Answer: B

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