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Cisco Quality of Service (QoS) Sample Questions:

1. What are two benefits of WFQ? (Choose two.)

A) Based on DSCP, WFQ allows weighted, random dropping of packets when the WFQ system is full.
B) WFQ can provide fixed-delay guarantees.
C) WFQ is very easy to configure, and no manual traffic classification is necessary.
D) WFQ can provide fixed-bandwidth and fixed-delay guarantees.
E) WFQ prevents the large-volume flows with large packet size from starving out the low-volume flows with small packet size.
F) WFQ can provide fixed-bandwidth guarantees.

2. HOTSPOT
Hotspot

3. Based on the configuration, which two statements are true? (Choose two.)
Policy-map shape-cbwfq
Class interactive
Shape average 256000
Shape adaptive 128000
Bandwidth 128

A) This configuration allows class-based traffic shaping to lower the traffic rate in response to the BECN bit.
B) The interactive traffic class will have a maximum bandwidth guarantee of 256 kbps.
C) The interactive traffic class will have a minimum bandwidth guarantee of 256 kbps.
D) The interactive traffic class will have a min-rate (min-cir) of 128 kbps.
E) If the interactive traffic class exceeds an average rate of 256 kbps, the traffic rate will be throttled down to 128 kbps.

4. What is the purpose of using multiactions traffic policing?

A) so that exceed traffic can be shaped and violate traffic can be policed
B) so that traffic can be policed using two separate rates
C) so that class-based policing can mark at Layer 2 and Layer 3 at the same time
D) so that conform, exceed, and violate traffic can be marked with different CLPs
E) so that conform traffic from different flows can be marked with different DSCPs

5. What does the following command accomplish?
router(config-pmap-c)# shape fecn-adapt

A) enables the router to increase the shaping rate when FECN bits are received
B) enables the router to respond to FECN bits by creating test frames in the opposite direction with the BECN bit set
C) enables the router to increase the shaping rate when BECN bits are received
D) enables the router to lower the shaping rate when BECN bits are received
E) enables the router to respond to BECN bits by creating test frames in the opposite direction with the FECN bit set
F) enables the router to lower the shaping rate when FECN bits are received

Solutions: