Download New Latest (May) Cisco 642-887 Actual Tests 11-20

By | May 17, 2015

Ensurepass

 

QUESTION 11

Scenario:

 

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From the PE8 router, how many total prefixes for have an incoming local label assigned (including the imp-null)?

 

A.

45

B.

21

C.

66

D.

22

 

Answer: B

Explanation: On PE8 issue: show mpls ip binding summary and look at “assigned in labels”. That value is the correct answer NOT “learned out label”.

 

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QUESTION 12

Scenario:

 

 

 

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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

 

Answer: C

Explanation:# show policy-map

# show policy-map interface x/y

# show running-config policy-map

 

 

QUESTION 13

Which three steps are required to configure QPPB on Cisco IOS XR routers? (Choose three.)

 

A.

Apply a QPPB route policy to the BGP process using the table-policy command

B.

Apply a QPP

B route policy to the BGP neighbor using the route-policy command

C.

Define a QPPB route policy to match the customer routes, then set the IP precedence or qos-group

D.

Define a QPPB route policy to match the customer IP precedence or qos-group markings, then set the BGP community

E.

Enable QPPB on an interface using the ipv4 bgp policy propagation input ip- precedence|qos-group destination|source command

F.

Enable QPPB on an interface using the ipv4 bgp policy propagation output ip- precedence|qos-group destination|source command

 

Answer: ACE

Explanation:QoS Policy Propagation via BGP (QPPB), is a mechanism that allows propagation of quality of service (QoS) policy and classification by the sending party based on access lists, community lists and autonomous system paths in the Border Gateway Protocol (BGP), thus helping to classify based on destination instead of source address.

 

 

QUESTION 14

Refer to the Cisco IOS XR configuration exhibit.

 

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Which statement is correct?

 

A.

The backup tunnel-te 10 tunnel is using the highest setup and hold priority settings of 7.

B.

The backup tunnel path is learned dynamically.

C.

The fast-reroute command is missing under the (config-mpls-te-if)# configuration mode.

D.

Interface gi0/0/0/10 is the protected link.

 

Answer: D

 

 

QUESTION 15

You are tasked to enable LDP on many of the interfaces on the Cisco CRS-3 router, and because there are many interfaces that need to have LDP enabled, you mistakenly did not enable LDP on all the required interfaces. To prevent this issue from happening again in the future, what could you do the next time you need to enable LDP on many interfaces?

 

A.

use the mpls ldp auto-config command under the IGP routing process

B.

use the mpls ldp sync command under the IGP routing process

C.

use the interface all command under the MPLS LDP process

D.

use the discovery command under the MPLS LDP process

 

Answer: A

 

 

QUESTION 16

Referring to the Cisco IOS XR configuration exhibit,

 

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

 

A.

Only the label for 10.1.1.1/32 will be advertised to all the LDP peers.

B.

Labels for all prefixes will be advertised to the 10.1.1.1 LDP peer.

C.

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

D.

No labels will be advertised to any LDP peers.

 

Answer: A

 

 

QUESTION 17

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

 

 

QUESTION 18

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

 

Answer: A

 

 

QUESTION 19

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

Explanation:

 

 

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QUESTION 20

DRAG DROP

 

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Answer:

 

 

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A.

 

B.

 

C.

 

D.

 

 

Answer:

 

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