Cisco 642-887 Online Practice Questions and Exam Preparation

Cisco 642-887 Online Questions & Answers

• Question 61:

  Drag the MPLS Diff-Serv tunneling mode on the left to match the correct description on the right.

  Select and Place:

  

  

• Question 62:

  Referring to Cisco MPLS TE path setup operations using RSVP, drag the RSVP characteristic on the left to match the correct RSVP message type on the right.

  Select and Place:

  

  

• Question 63:

  Which configuration set enables outbound label filtering so that only peer 192.168.10.1 receives label advertisements in an MPLS environment?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  C. Option C

• Question 64:

  Scenario: On CE7 which statement is correct regarding Traffic the QoS policy applied to the gi0/0 interface in the input direction?

  

  

  A. Traffic matching the "MARKING2" class-map will be marked with qos-group 5
  B. Traffic matching the "MARKING1" class-map will be marked with MPLS EXP 5
  C. All incoming packets not matched bythe"MARKING1" class-map will be dropped
  D. All incoming packets with the DSCP EF marking with be marked with MPLS EXP 0
  B. Traffic matching the "MARKING1" class-map will be marked with MPLS EXP 5

  ---

  Explanation: Issue: show policy-map interface gi0/0 First find out which policy-map is applied (it called something like QOSPOLICY1) A is wrong. Class MARKING2 is indeed defined but not applied to that policy-map. There are two class-maps applied MARKING1 and class-default. Both will mark the traffic with MPLS EXP values. default: set mpls experimental imposition 0 MARKING1 set mpls experimental imposition 5

• Question 65:

  Which item is not available to be used for QoS classification in Cisco IOS XR?

  A. MAC SA
  B. protocol
  C. inner EXP
  D. discard-class
  E. QoS-group
  F. VLAN
  C. inner EXP

• Question 66:

  Scenario: On CE 7 router, which statement is correct regarding the "QOS-POLICY policy map configurations?

  

  A. Traffic matched bythe"QOS-HTTP-1" class-map is shaped to an average is rate of 2560000 128000bps
  B. Traffic matched bythe"QOS1-HTTP-2" class-map will be queued in the low-latency- queue which has a maximum bandwidth guarantee of 64000
  C. Traffic matched by the "QOS-FTP-1" class-map can't use more than 256 Kbps under any condition
  D. The "QOS-POLICY is applied to the gi0/0 interface in the input direction
  C. Traffic matched by the "QOS-FTP-1" class-map can't use more than 256 Kbps under any condition

  ---

  # show policy-map # show policy-map interface x/y # show running-config policy-map

• Question 67:

  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
  A. conform
  C. violate
  D. exceed

• Question 68:

  In Cisco MPLS TE implementations, what can cause the tunnel bandwidth to adjust automatically based on the traffic load in the tunnel?

  A. fast reroute
  B. admin weight
  C. autobandwidth
  D. bandwidth subpool
  C. autobandwidth

• Question 69:

  Which option is a Cisco-recommended congestion management or queuing method for real-time traffic for voice and video?

  A. CB-WFQ
  B. PQ
  C. WFQ
  D. LLQ
  D. LLQ

• Question 70:

  Which two statements are correct in describing ISP environments that are running IP/MPLS in the core network? (Choose two.)

  A. On the PE routers, each BGP route must use a unique label to reach the BGP next hop.
  B. The BGP next hops point to the PE routers, and only the PE routers are required to run BGP.
  C. A full mesh of IBGP sessions are required between all of the PE and P routers to ensure proper packets forwarding.
  D. The PE and P routers run LDP to learn the labels for reaching the BGP next-hop addresses.
  B. The BGP next hops point to the PE routers, and only the PE routers are required to run BGP.
  D. The PE and P routers run LDP to learn the labels for reaching the BGP next-hop addresses.