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

1. Which two statements are true regarding SCCP? (Choose two.)

A) SCCP requires each endpoint or gateway event to be communicated to Cisco Unified Communications Manager.
B) SCCP may interoperate with H.323 endpoints if it is implemented with Cisco Unified Communications Manager.
C) Endpoints can operate autonomously if communication with Cisco Unified Communications Manager is lost.
D) SCCP uses hex messages for communication.
E) Endpoints and gateways maintain the dial plan.

2. Which command is used to enable the AutoQoS feature on an incoming interface while also trusting existing quality of service markings?

A) router(config-if)#auto qos voip
B) router(config)#auto qos voip trust interface interface
C) router(config-if)#auto qos voip trust
D) router(config)#auto qos voip interface interface

3. Which four voice and video issues are caused by the absence of QoS? (Choose four.)

A) echo
B) jitter
C) delays
D) dropped calls
E) defective CAT cable
F) circuit issues
G) call setup failure

4. How does Packet Loss Concealment improve voice quality?

A) Cisco Packet Loss Concealment technology decreases the voice sampling rate to 10 ms of the voice payload to smooth gaps in the voice stream.
B) Packet Loss Concealment intelligently analyzes missing packets and generates a reasonable replacement packet to improve the voice quality.
C) Packet Loss Concealment will buffer 20 to 50 ms of a voice stream to minimize lost or out-oforder voice packets.
D) Packet Loss Concealment will compensate for packet loss rates between 1 and 5 percent by generating a reasonable replacement packet to improve the voice quality.

5. Which codec supports VAD and CNG?

A) G.726
B) G.711
C) G.723.1
D) G.729B

Solutions: