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Cisco Quality of Service (QoS) Sample Questions:

1. Which two of the following statements about CBWFQ are correct? (Choose two.)

A) The CBWFQ scheduler provides a guaranteed amount of minimum bandwidth to each class.
B) CBWFQ services each class queue using a strict priority scheduler.
C) Each CBWFQ traffic class is policed using a congestion aware policer.
D) The class-default queue only supports WFQ.
E) Inside a class queue, processing is always FIFO, except for the class-default queue.

2. Based on the following show output, which statement is true?
WG1S1#sh mls qos interface fa0/1 FastEthernet0/1 trust state: not trusted trust mode: trust cos COS override: dis default COS: 0 pass-through: none trust device: cisco-phone

A) A Cisco IP Phone is not connected to the fa0/1 switch port.
B) All incoming DSCP markings are trusted.
C) DSCP markings from the Cisco IP Phone are trusted.
D) All incoming CoS markings are trusted.

3. DRAG DROP
Drop

4. Which two commands are typically applied to the voice traffic class within a policy-map? (Choose two.)

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

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: