Practice Digital Communications Interview Multiple Choice Questions with Answers Quiz-1 - MCQGeeks.com

Q.1.

Which noise is useful for dithering?

a) White noise
b) Pink noise
c) Brown noise
d) None of the mentioned

Explanation

Q.2.

Capacity of a channel can be increased by

a) Increasing channel bandwidth
b) Increasing signal power
c) Increasing channel bandwidth &signal power
d) None of the mentioned

Explanation

Q.3.

Capacity of the channel can be increased by reducing in band noise power.

a) True
b) False

Explanation

Q.4.

Noise has

a) Infinite energy
b) Infinite power
c) Infinite energy & power
d) None of the mentioned

Explanation

Q.5.

Thermal noise is

a) Energy signal
b) Power signal
c) Energy & Power signal
d) None of the mentioned

Explanation

Q.6.

Thermal noise is a wide sense stationary process.

a) True
b) False

Explanation

Q.7.

The maximum likelihood function is

a) Positive
b) Negative
c) Any of the mentioned
d) None of the mentioned

Explanation

Q.8.

Matched filtering operation includes

a) Spectral phase matching
b) Spectral amplitude matching
c) Spectral phase & amplitude matching
d) None of the mentioned

Explanation

Q.9.

Matched filter is

a) Linear
b) Non linear
c) Linear & Non linear
d) None of the mentioned

Explanation

Q.10.

Which consists of less ISI?

a) Nyquist filter
b) Raised cosine filter
c) Nyquist & Raised cosine filter
d) None of the mentioned

Explanation