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Cisco Quality of Service (QoS) Sample Questions:

1. The following commands have been configured under the fa0/1 interface on the 2950 switch:
wrr-queue bandwidth 20 1 80 0
mls qos trust cos
mls qos trust device cisco-phone
Voice traffic from the IP phone that is directly connected to the fa0/1 interface is experiencing excessive delays. What could be the cause of this problem?

A) The default cos-to-dscp map is being used.
B) The trust boundary configuration is not correct.
C) The default dscp-to-cos map is being used.
D) The default wrr-queue cos-map is being used.
E) The wrr-queue bandwidth weightings are not correct.

2. Which three factors will affect processing delay? (Choose three.)

A) IP switching method
B) queuing mechanism
C) distance of media
D) type of media
E) CPU speed
F) router architecture

3. What are three methods of reducing delay for critical applications in a converged network? (Choose three.)

A) Increase link capacities.
B) Reduce inter-packet gaps.
C) Apply header compression.
D) Increase LFI fragment size.
E) Increase all queue depths.
F) Apply payload compression.

4. HOTSPOT

5. Which element is mandatory for QoS policy propagation through BGP operations?

A) MQC
B) MPLS
C) policy-based routing
D) CEF
E) QoS pre-classify
F) NBAR

Solutions: