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Cisco Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) Sample Questions:

1. Which QoS technology provides a strict priority queuing scheme that allows delay-sensitive data such as voice to be dequeued and sent before packets in other queues are dequeued, and also works with WFQ and CBWFQ.

A) RSVP
B) header compression
C) FRF.12
D) low latency queuing
E) IP RTP Priority and Frame Relay IP RTP Priority

2. The two main commands that are required for low latency are priority and bandwidth. What is the function of the bandwidth command?

A) Applies to a priority queue.
B) Identifies a class as strict priority bandwidth.
C) Allocates bandwidth to nonpriority classes.
D) Identifies a class as a strict priority and allocates a bandwidth.

3. DRAG DROP
Drag the components from the left and drop them under the appropriate categories on the right.

Cisco 642-437 Exam

4. Voice packets are arriving at a destination with a variance of between 20 and 50 milliseconds. If the jitter buffer has a capacity of 30 milliseconds, what is the impact on the audio at the receivers IP phone? Voice packets are arriving at a destination with a variance of between 20 and 50 milliseconds. If the jitter buffer has a capacity of 30 milliseconds, what is the impact on the audio at the receivers IP phone?

A) The jitter buffer will replay the previous voice packets to replace those packets that exceed 30 milliseconds to avoid speech gaps.
B) The IP phone will negotiate in mid-call a lower bandwidth codec to reduce the delay in the arrival of voice packets to avoid voice gaps.
C) The DSP will automatically increase the jitter buffer size after sampling the range of incoming voice packets to accommodate the wider range in variation of voice packet arrival times to avoid voice gaps.
D) There will be no impact the audio stream because the audio packets are arriving in the jitter buffer window.

5. What is a Cisco Voice Gateway feature that enables class of service or calling privileges to be assigned?

A) dial peer
B) partition
C) calling search space
D) COR

Solutions:

Question # 1 Answer: E

Question # 2 Answer: C

Question # 3 Answer: Only visible for members

Question # 4 Answer: D

Question # 5 Answer: D