DIGITAL COMMUNICATION MCQ

DIGITAL COMMUNICATION MCQ

University

45 Qs

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DIGITAL COMMUNICATION MCQ

DIGITAL COMMUNICATION MCQ

Assessment

Quiz

Physics

University

Practice Problem

Medium

Created by

Duraibabu Ayyadurai

Used 17+ times

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45 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The process of converting the analog sample into discrete form is called

Modulation
 Multiplexing
Quantization
Sampling

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The negative statement for Shannon's theorem states that

If R > C, the error probability increases towards Unity
 If R < C, the error probability is very small
 Both a & b
None of the above

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The technique that may be used to increase average information per bit is

Shannon-Fano algorithm
 ASK
FSK
Digital modulation techniques

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 For a binary symmetric channel, the random bits are given as

Logic 1 given by probability P and logic 0 by (1-P)
Logic 1 given by probability 1-P and logic 0 by P
Logic 1 given by probability P2 and logic 0 by 1-P
Logic 1 given by probability P and logic 0 by (1-P)2

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Information rate is defined as

Information per unit time
 Average number of bits of information per second
 rH
All of the above

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The relation between entropy and mutual information is

 I(X;Y) = H(X) - H(X/Y)
I(X;Y) = H(X/Y) - H(Y/X)
I(X;Y) = H(X) - H(Y)
I(X;Y) = H(Y) - H(X)

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The memory less source refers to

No previous information
No message storage
Emitted message is independent of previous message
None of the above

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