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Cisco Quality of Service (QoS) Sample Questions:

1. SIMULATION - LAB

A) Please click console

2. A major media company recently deployed a new converged network. The original network design used separate networks for graphics and video, interactive data, and voice. The company has been experiencing problems with voice traffic in the new converged network. Most of the time voice quality is perfectly acceptable. Periodically voice quality exhibits unacceptable choppy voice signals, and occasionally calls are dropped. At this time the company is not willing to simply add bandwidth to the network.
Which QoS solution would most likely help to resolve the problem?

A) Prioritize voice traffic as the highest priority to ensure that voice traffic is always serviced by the priority queue.
B) Use advanced technologies to compress all video and graphics traffic on the network.
C) Use class-based weighted fair queuing to prioritize voice traffic with a higher weight than all other traffic.
D) Use TCP header compression and LFI to reduce delays.

3. The show policy-map interface command output is showing too many random drops for the mission-critical traffic class. What can be changed to reduce the random drops?

A) Increase the WRED min-threshold value for the mission-critical traffic class.
B) Decrease the WRED drop probability denominator for the mission-critical traffic class.
C) Increase the WRED max-threshold value for the mission-critical traffic class.
D) Decrease the queue-limit for the mission-critical traffic class.
E) Enable fair-queue within the mission-critical traffic class.

4. 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) weighted round robin with an expedite queue
C) weighted round robin
D) weighted fair
E) modified deficit round robin
F) custom

5. What are three reasons link efficiency mechanisms are deployed on WAN links? (Choose three.)

A) increase throughput
B) decrease propagation delay
C) increase link speed
D) decrease delay
E) decrease jitter

Solutions: