Digital Access Cross-Connect Systems are used for Networks that are:
A. Dedicated Digital Channel Time Division Multiplexing Networks.
B. Switched Digital Channel Multiplexing Networks.
C. Packet Network Routers.
D. Ethernet Switches.
BERT testing is used for what purpose?
A. Verifying the number of Video bit errors
B. Verifying the number of the Network bit errors
C. Verifying the number of Audio bit errors
D. None of the above
Ethernet is capable of automatically sensing the speed and duplicity of the LAN connection by using which process?
A. Flash Link Pulse
B. Dynamic Host Configuration Protocol
C. Domain Name Services
D. Light-weight Directory Access Protocol
E. Resource Reservation Protocol
F. RAS Protocol
Which of the following correctly describe the role room acoustics play regarding acoustic echo cancellation?
A. People moving around in a room change the acoustic paths presented to a microphone.
B. Fans, heaters, and air conditioners add background noise to the room, changing the room acoustic paths.
C. Hard room surfaces act as reflectors for sound, causing multiple acoustic paths from loudspeaker to microphone.
D. Heavy drapes and acoustic absorbers remove acoustic paths and therefore cause problems for acoustic echo cancellers.
Under normal operating conditions, Microphone and Audio amplification system should have sufficient _______ to operate without clipping.
A. amplitude bias space
B. 100db padding
C. no padding
D. headroom
E. videoroom
F. voltage feedback
H.323 describes which Standards for minimum compliance operations for Visual Telephony?
A. G.711 / H.261 / H.222 / H.245
B. G.722 / H.261 / H.225 / H.245
C. G.711 / H.262 / H.225 / H.245
D. G.711 / H.261 / H.225 / H.245
E. G.711 / H.263 / H.222 / H.245
F. G.722 / H.264 / H.222 / H.245
G. G.722 / H.263 / H.222 / H.245
H.320 Terminals that are able to call a Gateway and connect to an H.323 Terminal by dialing the E.164 alias, registered with the Gatekeeper, are called:
A. Obsolete H.320 Terminals.
B. H.323 Terminals.
C. H.221 Terminals.
D. TCS-4 Terminals.
E. T.120 Terminals.
F. H.321 Terminals.
Channel Network Clocks are used to provide the timing source for what kind of data?
A. Transmit
B. Receive
C. Old
D. Discarded
E. A and D
F. A and B
Which of the following statements about line-level and mic-level are true?
A. Audio mixers can be connected into a line-level input.
B. Line-level or mic-level can be used for any audio input device.
C. Line-level and mic-level always have different impedance values.
D. Voltage ranges are not the same between line-level and mic-level.
Which of the following are the correct descriptions of B and H0? (Select two of the following options.)
A. "B-Channel" has 64 kilobits per second of bandwidth
B. "B-Channel" has 48 kilobits per second of bandwidth
C. "B-Channel" has 128 kilo bits per second of bandwidth
D. "H0-Channel" has 1.920 million bits per second of bandwidth
E. "H0-Channel" has 1.544 million bits per second of bandwidth
F. "H0-Channel" has 384 kilobits per second of bandwidth
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