June 12, 2021

Sampling and Quantization – 2 MCQ’s

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This set of Digital Communications Systems Multiple Choice Questions & Answers (MCQs) focuses on “Sampling and Quantization – 2″.

1. A to D conversion process uses
a) Sampler
b) Quantizer
c) Sampler & Quantizer
d) None of the mentioned

2. Which process requires low pass filter?
a) Up-sampling
b) Down-sampling
c) Up-sampling & Down-sampling
d) None of the mentioned

3. Which requires interpolation filtering?
a) Up-sampler
b) D to A converter
c) Up-sampler & D to A converter
d) None of the mentioned

4. Original signal came to be retraced from sampled version using
a) Low pass filtering
b) High pass filtering
c) Low & High pass filtering
d) None of the mentioned

5. To avoid aliasing
a) Reduce the bandwidth
b) Cut out high frequency
c) Reduce the bandwidth & Cut out high frequency
d) None of the mentioned

6. The signal can be reconstructed
a) At Nyquist rate
b) Above Nyquist rate
c) At & above the Nyquist rate
d) None of the mentioned

7. Which filter does not have sharp output?
a) Linear phase filter
b) Delayed symmetric filter
c) Linear phase & Delayed symmetric filter
d) None of the mentioned

8. Reconstruction filter is difficult to implement in hardware.
a) True
b) False

9. Which device is needed for the reconstruction of signal?
a) Low pass filter
b) Equalizer
c) Low pass filter & Equalizer
d) None of the mentioned

10. Using ARMA filter
a) Sampling can be done in real time
b) Gives sharp output
c) All of the mentioned
d) None of the mentioned

11. Decreasing the data rate is called as
a) Aliasing
b) Down sampling
c) Up sampling
d) None of the mentioned

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