TDM vs FDM

Digital Communications Systems

This set of Digital Communication Questions for campus interviews focuses on “TDM vs FDM”.

1. Companding is used to
a) Increase the information transmission rate
b) Use only one carrier frequency to handle different signals
c) To use different frequency bands for different signals
d) To protect all small signals in PCM from quantizing noise

2. TDM is used to
a) Increase the information transmission rate
b) Use only one carrier frequency to handle different signals
c) To use different frequency bands for different signals
d) To protect all small signals in PCM from quantizing noise
.

3. Which has greater bandwidth?
a) TDM
b) FDM
c) TDM & FDM
d) None of the mentioned

4. Which has lower noise immunity?
a) TDM
b) FDM
c) TDM & FDM
d) None of the mentioned

5. TDM can be employed to transmit channels having unequal bandwidth,
a) True
b) False

6. Using sampling theorem, analog signal cannot be reconstructed.
a) True
b) False

7. Which maintains better fidelity?
a) Analog communication
b) Digital communication
c) Analog & Digital communication
d) None of the mentioned

8. In which reusing of components can be made possible?
a) Analog communication
b) Digital communication
c) Analog & Digital communication
d) None of the mentioned

9. A mechanism for breaking the problem down is
a) Layering
b) Dividing
c) Abstraction
d) Entity sharing

10. In digital communication, interaction between ______ is possible.
a) Any layer to layer
b) One layer to next layer
c) layers
d) None of the mentioned

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