Cisco 642-887 Online Practice Questions and Exam Preparation

Cisco 642-887 Online Questions & Answers

• Question 41:

  When defining an explicit MPLS TE tunnel path, which two command options are available under the explicit-path configuration mode? (Choose two.)

  A. exclude-address
  B. include-address
  C. next-address
  D. dynamic-address
  A. exclude-address
  C. next-address

• Question 42:

  Which option is the appropriate method for CBWFQ WRED implementation in Cisco IOS XR?

  A. configure policy-map POLICY_1 class CLASS1 random-detect default commit
  B. configure policy-map POLICY_1 class CLASS1 wred default commit
  C. configure interface pos 0/0/0/0 random-detect default commit
  D. configure policy-map POLICY_1 class CLASS1 weighted random-detect default commit
  A. configure policy-map POLICY_1 class CLASS1 random-detect default commit

• Question 43:

  Refer to the exhibit.

  

  Which two commands can be used to assign traffic onto MPLS TE Tunnel1001? (Choose two.)

  A. ip route 0.0.0.0 0.0.0.0 Tunnel1001
  B. tunnel mpls traffic-eng autoroute announce
  C. tunnel mpls traffic-eng bandwidth
  D. tunnel mpls traffic-eng priority 1 1
  E. ip route 0.0.0.0 0.0.0.0 10.0.0.1
  A. ip route 0.0.0.0 0.0.0.0 Tunnel1001
  B. tunnel mpls traffic-eng autoroute announce

• Question 44:

  Which two protocols facilitate label bindings by neighboring routers? (Choose two.)

  A. IS-IS
  B. LDP
  C. OSPF
  D. EIGRP
  E. BGP
  B. LDP
  E. BGP

• Question 45:

  Which two options are able to perform the MPLS label distribution function? (Choose two.)

  A. manual tagging
  B. static
  C. LDP
  D. RSVP-TE
  E. CEF
  C. LDP
  D. RSVP-TE

• Question 46:

  Which two options are true regarding the Pipe and Short Pipe MPLS tunneling models? (Choose two.)

  A. In Short Pipe mode QoS is done on the PE-to-CE link based on the customer's PHB markings
  B. In Pipe mode QoS is done on the PE-to-CE link based on the service provider's PHB markings
  C. In Pipe mode QoS is done on the PE-to-CE link based on the customer's PHB markings
  D. In Short Pipe mode QoS is done on the PE-to-CE link based on the service provider's PHB markings
  E. Short Pipe mode does not need MPLS usage, but Pipe mode does
  A. In Short Pipe mode QoS is done on the PE-to-CE link based on the customer's PHB markings
  B. In Pipe mode QoS is done on the PE-to-CE link based on the service provider's PHB markings

• Question 47:

  What is the term that is used for the label that an LSR assigns and distributes to other LSRs in MPLS?

  A. Local
  B. Remote
  C. Explicit
  D. Explicit Null
  E. Aggregate
  A. Local

• Question 48:

  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.
  D. Within the parent policy-map, reference another child policy-map using the service- policy command.

• Question 49:

  A recent analysis of a service provider network infrastructure revealed the necessity to reinforce bandwidth control over all the 5 Mbps residential customer contracts. Which option is a viable solution to rate limit customer's bandwidth both upstream and downstream?

  A. class-based policing
  B. committed access rate on a per interface basis
  C. reserving 5 Mbps on Cisco MPLS TE tunnels that connect customers
  D. setting customer Ethernet links to 10 Mbps half-duplex
  C. reserving 5 Mbps on Cisco MPLS TE tunnels that connect customers

• Question 50:

  A network engineer wants to implement QoS in an environment in which GRE tunnels are used. The engineer creates a policy map to classify the traffic and applies the map to the physical interface. Despite a successful ping to the end of the tunnel, the counter of the class-map ICMP does not register a hit. How can the engineer fix this problem?

  A. enable QoS preclassify in the tunnel interface
  B. send the ping with source tunnel 0
  C. send the ping with source F0/0
  D. enable QoS preclassify in the physical interface
  A. enable QoS preclassify in the tunnel interface