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Cisco Quality of Service (QoS) Sample Questions:

1. Based on the following 2950 switch configurations, which statement is correct?
no wrr-queue cos-map wrr-queue bandwidth 20 10 70 1 wrr-queue cos-map 4 5 wrr-queue cos-map 1 0 1 2 3 wrr-queue cos-map 3 6 7

A) Queue 4 is setup as the expedite queue.
B) Queue 1 is setup as the expedite queue.
C) Queue 3 is setup as the expedite queue.
D) No queue is setup as the expedite queue.
E) Queue 2 is setup as the expedite queue.

2. DRAG DROP
Drop

3. Mission-critical traffic is not getting a minimum bandwidth of 192 kbps in this policy-map configuration. What should be done to correct the problem?
policy-map test class mission-critical bandwidth 192 shape average 128000 queue-limit 64

A) Set the shape rate to a CIR that is higher than 192 kbps.
B) Use the shape peak command instead of the shape average command.
C) Decrease the maximum queue size for the mission-critical traffic class using the queue-limit 40 command.
D) Replace the bandwidth statement with the priority 192 command.
E) Increase the maximum queue size for the mission-critical traffic class using the queue-limit 128 command.
F) Change the bandwidth statement to the bandwidth 192000 command.

4. DRAG DROP
Drop

5. In a typical converged campus network, which two of the following are considered QoS best practices? (Choose two.)

A) Ensure voice traffic is serviced by a weighted fair queue.
B) Traffic classification and marking is performed at the high speed core layer.
C) Catalyst switches should use weighted round robin (WRR) queuing giving the voice traffic the highest priority.
D) Only a reasonable number of applications should be classified into the mission-critical traffic class.
E) Traffic classification and marking is performed as close to the traffic source as possible.
F) NBAR is used at the high speed core layer to discover and classify network applications.

Solutions: