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Cisco Quality of Service (QoS) Sample Questions:

1. When configuring WFQ, what is the default number of dynamic queues based on?

A) drop probability denominator
B) interface bandwidth
C) hash of the packet headers
D) inter-packet arrival rate
E) hold-queue limit
F) congestive discard threshold (CDT)

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

3. HOTSPOT

4. Which command is typically applied to the voice traffic class within a policy-map?

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

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

Solutions:

Question # 1 Answer: B

Question # 2 Answer: C

Question # 3 Answer: Only visible for members

Question # 4 Answer: A,E

Question # 5 Answer: B