Top 150+ Solved Digital Communication MCQ Questions Answer

a. needs least power as due to opposite polarity

b. prevents build-up of dc

c. may be used for longer distance

d. all of the above

a. inter symbol interference

b. white noise

c. image frequency interference

d. transit time noise

a. is used to study isi

b. may be seen on cro

c. resembles the shape of human eye

d. all of the above

a. width of eye opening of eye pattern

b. rate of closure of eye of eye pattern

c. height of the eye opening of eye pattern

d. all of the above

a. low pass filter

b. base band filter

c. matched filter

d. bessel filter

a. for maximizing signal to noise ratio

b. for signal detection

c. in radar

d. all of the above

a. data signaling rate

b. modulation rate

c. coding

d. none of the above

a. to control inter symbol interference

b. by limiting the bandwidth of transmission

c. after line coding and modulation of signal

d. all of the above

a. nyquist criterion

b. quantization

c. sample and hold

d. pll

a. raised – cosine filter

b. sinc shaped filter

c. gaussian filter

d. all of the above

a. the bandwidth occupied beyond the nyquist bandwidth of the filter

b. the performance of the filter or device

c. aliasing effect

d. none of the above

a. transmitting the signal without isi

b. reduction in transmission bandwidth

c. increase in transmission bandwidth

d. both a and b

a. relates the conditions in time domain and frequency domain

b. helps in quantization

c. limits the bandwidth requirement

d. both a and c

a. there are abrupt transitions obtained at edges of the bands

b. bandwidth criterion is not easily achieved

c. filters are not available

d. none of the above

a. reduces inter symbol interference

b. removes distortion caused due to channel

c. is done using linear filters

d. all of the above