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

1. Calculate how many IP phone calls can be sent across a 64 kbps Frame Relay link that uses the
G.729 codec being sampled 50 times a second, 20 bytes a sample, and has 6 bytes of Frame Relay header overhead with no checksum and uses header compression.

A) 7
B) 4
C) 5
D) 3

2. Which signaling protocol is defined by the ITU-T standard?

A) MGCP
B) SIP
C) SCCP
D) H.323

3. Which three factors must be considered when calculating the total bandwidth of a VoIP call, in order to avoid voice quality issues? (Choose three.)

A) capacity of network links
B) data-link overhead
C) sample size
D) CRC usage
E) codec size

4. How does LLQ ensure that voice traffic is always expedited?

A) The LLQ strict priority queue allows delay-sensitive data such as voice to be dequeued and sent first (before packets in other queues are dequeued), giving delay-sensitive data preferential treatment over other traffic.
B) The strict priority queue has a higher weight than the queues in CBWFQ. This weight allows the delay-sensitive data such as voice to be dequeued and sent first.
C) LLQ adds WRED to CBWFQ. This allows delay-sensitive data such as voice to be dequeued and sent first.
D) LLQ uses CBWFQ to prioritize voice traffic and by dequeuing the voice packets so they can be handled first.

5. When configuring AutoQoS VoIP on a Cisco Catalyst switch how is the configuration performed?

A) The auto qos voip command is applied to each interface.
B) Each interface will need either the auto qos voip trust cisco-phone or auto qos voip trust trust on each interface depending on the upstream device.
C) The auto qos voip command is applied globally in the switch.
D) Each interface will need either the auto qos voip cisco-phone or auto qos voip trust on each interface depending on the upstream device.

Solutions: