Cisco CCIP 642-642

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Cisco 642-642 Exam Syllabus Topics:

Cisco Quality of Service (QoS) Sample Questions:

Question #1
In a managed CE scenario, the customer's network is supporting VoIP and bulk file transfers. According to the best practices, which QoS mechanisms should be applied on the WAN edge CEPE 56-kbps Frame Relay link on the CE outbound direction?

A. WRR, CB-WRED, CB-Marking, FRF.12, and CB-RTP header compression
B. CBWFQ, CB-WRED, CB-Marking, CB-Policing, and FRTS
C. WRR, FRTS, FRF.12, and CB-RTP header compression
D. LLQ, CB-WRED, CB-Policing, and CB-TCP and CB-RTP header compressions
E. CBWFQ, FRTS, FRF.12, and CB-RTP header compression
F. LLQ, CB-WRED, CB-Marking, FRTS, FRF.12, and CB-RTP header compression

Question #2
Where is the error in the following policy-map configuration?
policy-map test class voice priority 168 class mission-critical bandwidth 192 random-detect class class-default fair-queue bandwidth 128

A. The mission-critical traffic class bandwidth guarantee should be lower than the voice traffic class priority bandwidth guarantee.
B. The mission-critical traffic class is missing the queue-limit command.
C. Fair-queue should be enabled for the mission-critical traffic class.
D. The voice traffic class is missing the random-detect command.
E. The bandwidth command is not a valid command for the class-default traffic class in this case.

Question #3
Based on the configuration, which two of the following statements are true? (Choose two.)
policy-map police 1
class bulk-ftp
police cir percent 20 pir percent 40
conform-action set-dscp-transmit af11
exceed-action set-dscp-transmit 0
violate-action drop

A. This configuration will drop all exceeding traffic.
B. This is a dual-rate, class-based policing example.
C. This configuration will use a single token bucket.
D. This is a percentage-based policing example.
E. This is a multi-action, class-based policing example.

Question #4
Which two commands are typically applied to the voice traffic class within a policy-map? (Choose two.)

A. bandwidth {kbps}
B. random-detect ecn
C. priority {kbps}
D. shape peak {bps}
E. random-detect dscp-based
F. compress header ip rtp

Question #5
Based on the Cisco Catalyst 2950 Series switch configuration shown, with no weights being
assigned to the egress queues, which type of queuing is being implemented?
wrr-queue cos-map 1 0
wrr-queue cos-map 2 1 2 3
wrr-queue cos-map 3 4 5
wrr-queue cos-map 4 6 7

A. priority
B. custom
C. weighted round robin with an expedite queue
D. weighted fair
E. weighted round robin
F. modified deficit round robin

Solutions: