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QUESTION 69
What is the correct frequency response for the G.711 audio algorithm?
A. 300Hz to 3.4kHz
B. 50Hz to 7kHz
C. 300Hz to 7kHz
D. 50Hz to 3.4kHz
Correct Answer: A
QUESTION 70
Which of the following describes one ISDN B-Channel?
A. Network that provides 64 kilobits per second
B. Network that provides 4800 kilobits per second
C. Network that provides various rates up to 1,920,000 bits per second
D. Network that is unable to function
E. Network that provides 1,536,000 bits per second
F. Network that provides 128 kilobits per second
Correct Answer: A
QUESTION 71
Which of the following correctly describes echo as it relates to acoustic echo cancellations?
A. 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.
B. The sound one hears when the far-end is talking and one tries to talk at the same time.
C. The sound of the far-end being returned to themselves, caused by the room microphones picking up the audio from the room loudspeakers.
D. The sound of the room reverberation as picked up by the local microphones, amplified and returned to the far-end.
Correct Answer: C
QUESTION 72
Which signals are being used with Y/C video?
A. Kodachrome and polychrome
B. Chrominance and luminance
C. Red, green and blue
D. Yustra spectrum and composite
Correct Answer: B
QUESTION 73
Which of the following are the ITU-T Standard that describes the Transport for T.120?
A. T.121
B. T.124
C. T.123
D. T.126
Correct Answer: C
QUESTION 74
The H.239 Standard is best described as
A. Role Management -People and Content Standard for H.320 only.
B. Role Management or People and Content Standard for H.300 Series.
C. Audio Coding and Additional Media Channels.
D. Role Management and Chair Control.
E. Role Management -People and Content Standard for H.321 only.
F. Role Management and Additional Far End Camera Control.
Correct Answer: B
QUESTION 75
The G.722.1 operates up to frequency response bandwidth of
A. 7000Hz.
B. 12,000Hz.
C. 600Hz.
D. 1200Hz.
E. 4800Hz.
Correct Answer: A
QUESTION 76
Which audio coding standards are described by H.320?
A. G.711, G.721, G.722, and G.723
B. G.711, G.722, G.728, and G.723.1
C. G.711, G.722, G.728, and G.726
D. G.711, G.722, G.728, G.723.1, and G.729
Correct Answer: D QUESTION 77
Which of the following is considered 4SIF?
A. 640 X 480
B. 1024 X 768
C. 720 X 480
D. 800 X 600
E. 704 X 576
Correct Answer: C
QUESTION 78
High-Definition Videoconferencing will require and use
A. the same camera from NTSC and PAL VTC systems
B. typical off the shelf web camera
C. All of the other alternatives apply.
D. high-definition camera
Correct Answer: D
QUESTION 79
BERT testing is used for what purpose?
A. Verifying the number of Audio bit errors
B. Verifying the number of the Network bit errors
C. Verifying the number of Video bit errors
D. None of the other alternatives apply.
Correct Answer: B
QUESTION 80
Which of the following Call Establishment Packets are used for ISDN Call Setup on the D Channel?
A. SETUP / CALL PROCEDING / IN PROGRESS / ALERT / CONNECT ACK
B. SETUP / CALL ROUTING OPEN / RELEASE COMPLETE
C. SETUP / RECEIVER READY / WAIT INDICATOR
D. None of the other alternatives apply.
E. SETUP / REQUEST FOR CALL / CALL SETUP VALID
Correct Answer: A
QUESTION 81
Open System Interconnect describes a Model for
A. 7 Layers Communication Protocol Hierarchy with layer 1 as the most important.
B. 7 Layers Communication Protocol Hierarchy with layer 7 as the most important.
C. None of the other alternatives apply..
D. 3 Layers Communication Protocol Hierarchy with Layer 1 as the most important.
E. 3 Layers Communication Protocol Hierarchy with Layer 3 as the most important.
Correct Answer: A
QUESTION 82
Which of the following video display resolutions are true 16:9 Aspect Ratio?
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