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Mixed Quiz
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1

Which multiplexing technique transmits digital signals?
A)WDM
B)FDM
C)TDM
D)None of the above
2

Which multiplexing technique shifts each signal to a different carrier frequency?
A)TDM
B)FDM
C)Both (a) and (b)
D)None of the above
3

In TDM, for n signal sources of the same data rate, each frame contains _______ slots.
A)0 to n
B)n
C)n + 1
D)n - 1
4

In TDM, the transmission rate of the multiplexed path is usually _______ the sum of the transmission rates of the signal sources.
A)1 less than
B)Greater than
C)Less than
D)Equal to
5

DS-1 through DS-4 are _______ while T-1 through T-4 are _______.
A)Services; signals
B)Services; lines
C)Services; multiplexers
D)Multiplexers; signals
6

The sharing of a medium and its link by two or more devices is called _______.
A)Modulation
B)Encoding
C)Multiplexing
D)Line discipline
7

In AT&T's FDM hierarchy, the bandwidth of each group type can be found by multiplying _______ and adding extra bandwidth for guard bands.
A)The sampling rate by 4000 Hz
B)The number of voice channels by 4000 Hz
C)The number of voice channels by 8 bits/sample
D)The sampling rate by 8 bits/sample
8

Guard bands increase the bandwidth for _______.
A)TDM
B)FDM
C)Both (a) and (b)
D)None of the above
9

Which multiplexing technique transmits analog signals?
A)FDM
B)TDM
C)WDM
D)(a) and (c)
10

In a T-1 line, _______ interleaving occurs.
A)Bit
B)Byte
C)DS-0
D)Switch
11

Which multiplexing technique involves signals composed of light beams?
A)WDM
B)FDM
C)TDM
D)None of the above





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