POLYCOM CVE2 Set 3

1.

Which of the following are the Audio and Video Packetized Transport, and Control / Communications procedures for H.323?

H.225 / H.245 H.224 / H.244 H.221 / H.241 H.221 / H.242

2.

Which of the following are the lower layer Standards that describe the Transport, Control, and Multipoint Communication Services of T.120?

T.121, T.122, T.123, T.124 T.120, T.121, T.122, T.123 T.122, T.123, T.124, T.125 T.120, T.122, T.123, T.124

3.

How is noise measured?

Volume Amplitude Impedance Distance

4.

In an Ethernet shared Hub configuration used for videoconferencing, collisions may occur and be tolerated up to_____ % Packet Ratio of Packets Collision over Total Packets Transported.

50 5 0.5 25

5.

The H.320 describes which Standards for minimum compliance operations for Visual Telephony?

G.711 / H.263 / H.222 / H.242 G.711 / H.261 / H.221 / H.242 G.722 / H.264 / H.222 / H.242 G.722 / H.261 / H.222 / H.242 G.722 / H.263 / H.222 / H.242

6.

Using different color-temperature light sources will compromise which part of the camera performance?

Field of View White Balance PTZ Brightness

7.

During a H.323 Videoconference, what is the correct bandwidth used by the G.711 and G.722 audio algorithms in a 256K conference call?

64,000 bits per second 30,000 bits per second 40,000 bits per second 128,000 bits per second

8.

What is the correct frequency response for the G.711 audio algorithm?

300Hz to3.4kHz 50Hz to7kHz 300Hz to7kHz 50Hz to3.4kHz

9.

Which of the following describes one ISDN B-Channel?

Network that provides 64 kilobits per second Network that provides 4800 kilobits per second Network that provides various rates up to 1,920,000 bits per second Network that is unable to function Network that provides 1,536,000 bits per second

10.

Which of the following correctly describes echo as it relates to acoustic echo cancellations?

The result of sound bouncing off the walls in the room caused by the person speaking in that room being picked up by the microphones. The sound one hears when the far-end is talking and one tries to talk at the same time. The sound of the far-end being returned to themselves, caused by the room microphones picking up theaudio from the room loudspeakers. The sound of the room reverberation as picked up by the local microphones, amplified and returned tothe far-end.

POLYCOM CVE2 Set 3

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POLYCOM CVE2 Set 3

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