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Cisco 642-642 Exam Syllabus Topics:

Cisco Quality of Service (QoS) Sample Questions:

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

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

2. At the network layer, IP packets are typically classified based on which three items? (Choose three.)

A) VLAN Identifier
B) flow control bits
C) content of the ToS byte
D) packet length
E) source and destination IP addresses

3. HOTSPOT

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

5. HOTSPOT

Solutions: