Which of the following best describes an analog waveform?
A waveform represented by a series of 1s and 0s
A continuously varying waveform
A waveform after it passes through the G.711 CODEC
A waveform after it passes through the G.729 CODEC
2.
According to the Nyquist Theorem, if you are digitizing music, and the highest frequency being sampled is 20 kHz, what is the minimum number of samples that should be taken per second?
10,000
20,000
40,000
80,000
3.
Undersampling an analog wave (that is, not taking enough samples to accurately reproduce the wave) can result in:
Aliasing
Glare
Gaussian distribution
Linear quantization
4.
G.711 is an example of which type of CODEC?
PCM
ADPCM
CS-ACELP
LD-CELP
5.
Which of the following CODECs includes VAD (Voice Activity Detection)?
G.729
G.729a
G.729b
G.711
6.
Which of the following is a voice quality measurement that uses a "trained ear?"
MOS
PSQM
GoS
PSQM
7.
The process of assigning numeric values to PAM (pulse amplitude modulation) samples is called:
Aliasing
Oversampling
Glare
Quantization
8.
A solid hour of voice conversation is the definition of which of the following terms?
GoS
PSQM
Erlang
Centum Call Second
9.
A company's monthly phone bill indicates that the company's total phone usage for the month was 10,000 minutes. Estimate the number of call minutes during the "busy hour."
68 call minutes
87 call minutes
360 call minutes
22 call minutes
10.
Which of the following CODECs produces the best voice quality?
