Cisco CCIP 642-642

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Cisco Quality of Service (QoS) Sample Questions:

1. Based on the following Cisco Catalyst 2950 Series switch configurations, which additional command will enable these actions?
Traffic marked with a CoS of 6 or 7 will be serviced by the priority queue.
Traffic marked with a CoS of 0, 1, or 2 will have a 20-percent weight when serviced by the wrr queue.
Traffic marked with a CoS of 4 will have a 30-percent weight when serviced by the wrr queue.
Traffic marked with a CoS of 3 or 5 will have a 50-percent weight when serviced by the wrr queue.
Catalyst 2950 partial configuration:
no wrr-queue cos-map
wrr-queue cos-map 1 0 1 2
wrr-queue cos-map 2 4
wrr-queue cos-map 3 3 5
wrr-queue cos-map 4 6 7

A) wrr-queue bandwidth 15 25 10 1
B) wrr-queue bandwidth 10 15 25 0
C) wrr-queue bandwidth 15 25 10 0
D) wrr-queue bandwidth 1 10 15 25
E) wrr-queue bandwidth 1 20 30 50

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

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

3. In which two locations is the qos pre-classify command applied to support QoS preclassification over an IPSec/GRE tunnel? (Choose two.)

A) the class-map
B) the policy-map
C) the crypto map
D) the physical interface
E) the tunnel interface

4. Which mechanism is used for the prioritizing, protection, and isolation of traffic based on marking?

A) shaping
B) policing
C) congestion avoidance
D) classification and marking
E) metering
F) congestion management

5. In an unmanaged CE router implementation, how does the service provider enforce the SLA?

A) by using class-based policing on the CE to PE link to limit the customer's input rate
B) by marking on the CE to PE link and using class-based policing on the PE to P link
C) by marking on the CE to PE link and using CBWFQ and CB-WRED on the PE to P link
D) by using class-based random discard on the CE to PE link to limit the customer's input rate

Solutions: