Explore topic-wise MCQs in Digital Communications.

This section includes 19 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Communications knowledge and support exam preparation. Choose a topic below to get started.

1.

A rake receiver uses multiple

A. Delay circuits
B. Correlators
C. Detectors
D. None of the mentioned
Answer» C. Detectors
Discussion
2.

Information reliability depends on

A. Magnitude of each component
B. Time of arrival of each component
C. Magnitude & Time of arrival of each component
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
3.

Rake receiver does

A. Counter effects multi-path fading
B. Resembles equalizer
C. Resembles equalizer & Counter effects multi-path fading
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
4.

Interleaving does

A. Forward error correction
B. Backward error correction
C. Forward & Backward error correction
D. None of the mentioned
Answer» B. Backward error correction
Discussion
5.

Uncorrelated fading occurs when

A. Time span is small
B. Time span is large
C. Does not depend on time span
D. None of the mentioned
Answer» C. Does not depend on time span
Discussion
6.

INTERLEAVING_DOES?$

A. Forward error correction
B. Backward error correction
C. Forward & Backward error correction
D. None of the mentioned
Answer» B. Backward error correction
Discussion
7.

Information reliability depends on$

A. Magnitude of each component
B. Time of arrival of each component
C. Magnitude & Time of arrival of each component
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
8.

Rake_receiver_does$

A. Counter effects multi-path fading
B. Resembles equalizer
C. Resembles equalizer & Counter effects multi-path fading
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
9.

The rake receivers functions are similar to

A. Equalizer
B. Matched filter
C. Equalizer & Matched filter
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
10.

Rake receivers are used in

A. Radio astronomy
B. CDMA
C. W-CDMA
D. All of the mentioned
Answer» E.
Discussion
11.

A_rake_receiver_uses_multiple

A. Delay circuits
B. Correlators
C. Detectors
D. None of the mentioned
Answer» C. Detectors
Discussion
12.

Uncorrelated fading occurs whe?

A. Time span is small
B. Time span is large
C. Does not depend on time span
D. None of the mentioned
Answer» C. Does not depend on time span
Discussion
13.

Which signalling scheme is preferred for fading channel?

A. Frequency based modulation
B. Phase based modulation
C. Frequency & Phase based modulation
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
14.

What are the modes of adaptive equalizer?

A. Training mode
B. Tracking mode
C. Training & Tracking mode
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
15.

Diversity technique

A. Provides significant link improvement
B. Needs training overhead
C. All of the mentioned
D. None of the mentioned
Answer» B. Needs training overhead
Discussion
16.

Which is more effective and commonly preferred technique?

A. Time diversity
B. Spatial diversity
C. Frequency diversity
D. None of the mentioned
Answer» C. Frequency diversity
Discussion
17.

Diversity technique is applied at

A. Base station
B. Mobile receiver
C. Base station & Mobile receiver
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
18.

Diversity technique is used for combating

A. Fading
B. Error bursts
C. Co-channel interference
D. All of the mentioned
Answer» E.
Discussion
19.

The technique for combining diversity signals are

A. Feedback
B. Maximal ratio
C. Equal gain
D. All of the mentioned
Answer» E.
Discussion