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

1. Which feature can be used to avoid traffic congestion by dropping low-priority packets rather than dropping high-priority packets and is not recommended for voice networks?

A) low latency queuing
B) class-based weighted fair queuing
C) weighted random early detection
D) tail-drop

2. Which two functions are associated with a voice gateway? (Choose two.)

A) Controls opening and closing of logical channels that are used to carry media streams
B) Switches voice channels between connected analog and digital voice circuits
C) Negotiates endpoint capabilities
D) Provides voice-messaging services to connected analog and digital voice circuits
E) Interconnects two logically separate VoIP networks

3. What is the function of class-based marking?

A) Marking allows network devices to classify a packet or frame, based on a specific traffic descriptor.
B) Marking frames based only on CoS value or IP precedence value allows Layer 2 frames to be identified and distinguished from other frames.
C) Marking frames or packets sets information in the Layer 2 and Layer 3 headers of a packet so that the frame or packet can be identified and distinguished from other frames or packets in the same traffic flow.
D) Marking frames only sets information in the Layer 2 headers of a frame so that the frame can be identified and distinguished from other packets or frames.
E) Marking packets is based only on CoS value, IP precedence value or DSCP value allows Layer 3 frames to be identified and distinguished from other packets.

4. When troubleshooting poor VoIP call quality, which two tools should you use to measure the overall metrics? (Choose two.)

A) signal-to-noise ratio
B) quality of service
C) quality of experience
D) mean opinion score
E) R-Factor

5. Which type of ephone-dn can be used to support one virtual voice port with support for two channels?

A) dual-line
B) single-line
C) dual-channel
D) dual-voice-channel

Solutions: