Which of the following is mandatory Video coding for H.323?
A. H.281
B. H.263
C. H.261
D. H.260
E. H.280
The H.243 Chair Control can be simultaneously performed by how many Visual Telephony Terminals?
A. One
B. Ten
C. Two
D. Unlimited
Which of the following are two examples of Fiber Optic interface problems? (Choose two of the following options.)
A. Cable bends
B. Gravity
C. Noise
D. EMI - Electro Magnetic Interference
E. Splice loss and connection loss
F. RFI Radio Frequency Interference
The G.711 Audio Coding may also be called Audio Coder
A. Medium Band
B. CD Quality
C. Super Wide Band
D. Narrow Band
E. Wide Band
F. Quite Band
What ITU-T Standard specifies the Framing and Multiplexing of Audio, Video, Data, and Control used in
A. H.221
B. H.200
C. H.201
D. H.220
Which of the following statements about line-level and mic-level are true?
A. Line-level ormic-level can be used for any audio input device.
B. Audio mixers can be connected into a line-level input.
C. Line-level andmic-level always have different impedance values.
D. Voltage ranges are not the same between line-level andmic-level.
Encryption security of Video and Audio will be used to make
A. only the packet payload unreadable
B. only the first packet header unreadable
C. None of the other alternatives apply.
D. only the packet headers unreadable
Role Management describes the opening of which two Visual Telephony Operations?
A. Additional Signal and Control Channels using MLP/HMLP
B. Control Channels forChairControl
C. Additional Media Video Channel using HSD Channels
D. Additional Media Video Channels using Logical Channels
E. Data Channels for Transport of Text and Far End Camera Control
What effect will an oscillating fan that is visible in the background have on the overall video quality?
A. Shadows
B. Lower frame rate C. Video switching
D. No effect
Videoconferencing channel synchronous networks may be defined as (Select two of the following options.)
A. networks that can transmit and receive simultaneously with no clock.
B. networks that provide no clocks.
C. networks that can transmit but not receive at the same time.
D. networks capable of speeds up to 2,000,000 bits per second.
E. networks that require clocks for transmit and receive.
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