Question 1

Which of the following is not an advantage of Fano's algorithm in comparison to Viterbi's algorithm?

Accepted Answer

A) less storage 
B) large constraint length 
C) error rate 
D) small delays 
A) less storage 
B) large constraint length 
C) error rate 
D) small delays D

Question 2

The inter leaver connected between the two decoders is used to

Accepted Answer

A) remove error bursts 
B) scatter error bursts 
C) add error bursts 
D) none of the mentioned 
A) remove error bursts 
B) scatter error bursts 
C) add error bursts 
D) none of the mentioned B

Question 3

Which of the following is not an algorithm for decoding convolution codes?

Accepted Answer

A) viterbi algorithm 
B) stack algorithm 
C) fano's sequential coding 
D) ant colony optimization 
A) viterbi algorithm 
B) stack algorithm 
C) fano's sequential coding 
D) ant colony optimization D

Question 4

For a error free channel, conditional probability should be

Accepted Answer

A) zero 
B) one 
C) equal to joint probability 
D) equal to individual probability 
A) zero 
B) one 
C) equal to joint probability 
D) equal to individual probability

Question 5

Decoders are connected in series.

Accepted Answer

A) True 
 B)False

Question 6

Which has continuous transmission?

Accepted Answer

A) asynchronous 
B) synchronous 
C) asynchronous & synchronous 
D) none of the mentioned 
A) asynchronous 
B) synchronous 
C) asynchronous & synchronous 
D) none of the mentioned

Question 7

Fano's algorithm searches all the paths of trellis diagram at same time to find the most probable path.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following indicates the number of input bits that the current output is dependent upon?

Accepted Answer

A) constraint length 
B) code length 
C) search window 
D) information rate 
A) constraint length 
B) code length 
C) search window 
D) information rate

Question 9

How error detection and correction is done?

Accepted Answer

A) by passing it through equalizer 
B) by passing it through filter 
C) by amplifying it 
D) by adding redundancy bits 
A) by passing it through equalizer 
B) by passing it through filter 
C) by amplifying it 
D) by adding redundancy bits

Question 10

In soft decision approach 100 means?

Accepted Answer

A) certainly one 
B) certainly zero 
C) very likely zero 
D) very likely one 
A) certainly one 
B) certainly zero 
C) very likely zero 
D) very likely one

Question 11

Average effective information is obtained by

Accepted Answer

A) subtracting equivocation from entropy 
B) adding equivocation with entropy 
C) ratio of number of error bits by total number of bits 
D) none of the mentioned 
A) subtracting equivocation from entropy 
B) adding equivocation with entropy 
C) ratio of number of error bits by total number of bits 
D) none of the mentioned

Question 12

In synchronous transmission, receiver must stay synchronous for

Accepted Answer

A) 4 bits 
B) 8 bits 
C) 9 bits 
D) 16 bits 
A) 4 bits 
B) 8 bits 
C) 9 bits 
D) 16 bits

Question 13

Turbo codes are

Accepted Answer

A) forward error correction codes 
B) backward error correction codes 
C) error detection codes 
D) none of the mentioned 
A) forward error correction codes 
B) backward error correction codes 
C) error detection codes 
D) none of the mentioned

Question 14

Which requires bit transitions?

Accepted Answer

A) asynchronous 
B) synchronous 
C) asynchronous & synchronous 
D) none of the mentioned 
A) asynchronous 
B) synchronous 
C) asynchronous & synchronous 
D) none of the mentioned

Question 15

Which has comparatively high frequency component?

Accepted Answer

A) sine wave 
B) cosine wave 
C) square wave 
D) none of the mentioned 
A) sine wave 
B) cosine wave 
C) square wave 
D) none of the mentioned

Question 16

Which of the following is not a way to represent convolution code?

Accepted Answer

A) state diagram 
B) trellis diagram 
C) tree diagram 
D) linear matrix 
A) state diagram 
B) trellis diagram 
C) tree diagram 
D) linear matrix

Question 17

CRC uses

Accepted Answer

A) multiplication 
B) binary division 
C) multiplication & binary division 
D) none of the mentioned 
A) multiplication 
B) binary division 
C) multiplication & binary division 
D) none of the mentioned

Question 18

Which can detect two bit errors?

Accepted Answer

A) parity check 
B) cyclic redundancy check 
C) parity & cyclic redundancy check 
D) none of the mentioned 
A) parity check 
B) cyclic redundancy check 
C) parity & cyclic redundancy check 
D) none of the mentioned

Question 19

Which is more efficient?

Accepted Answer

A) parity check 
B) cyclic redundancy check 
C) parity & cyclic redundancy check 
D) none of the mentioned 
A) parity check 
B) cyclic redundancy check 
C) parity & cyclic redundancy check 
D) none of the mentioned

Question 20

Which can be used as an intermediate device in between transmitter entity and receiver entity?

Accepted Answer

A) ip router 
B) microwave router 
C) telephone switch 
D) all of the mentioned 
A) ip router 
B) microwave router 
C) telephone switch 
D) all of the mentioned

Which of the following is not an advantage of Fano's algorithm in comparison to Viterbi's algorithm?

The inter leaver connected between the two decoders is used to

Which of the following is not an algorithm for decoding convolution codes?

For a error free channel, conditional probability should be

Decoders are connected in series.

Which has continuous transmission?

Fano's algorithm searches all the paths of trellis diagram at same time to find the most probable path.

Which of the following indicates the number of input bits that the current output is dependent upon?

How error detection and correction is done?

In soft decision approach 100 means?

Average effective information is obtained by

In synchronous transmission, receiver must stay synchronous for

Turbo codes are

Which requires bit transitions?

Which has comparatively high frequency component?

Which of the following is not a way to represent convolution code?

CRC uses

Which can detect two bit errors?

Which is more efficient?

Which can be used as an intermediate device in between transmitter entity and receiver entity?

Modulation and Demodulation Techniques

Information Theory and Communication Techniques

Waveform Logic, Pcm Encoding, Vocoder Analysis, and Antenna Radiations

Microwave Communication and Modulation

M-Ary Signalling and Pulse Shaping Techniques

Signal Filtering and Equalization Techniques

Information Theory and Coding Techniques

Algorithms and Techniques for Communication System Security and Error Correction

Modulation Schemes and Access Techniques for Spread Spectrum Systems

Digital and Analog Telecommunications Standards

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Exam 8: Channel Coding and Error Correction Techniques

Which of the following is not an advantage of Fano's algorithm in comparison to Viterbi's algorithm?

The inter leaver connected between the two decoders is used to

Which of the following is not an algorithm for decoding convolution codes?

For a error free channel, conditional probability should be

Decoders are connected in series.

Which has continuous transmission?

Fano's algorithm searches all the paths of trellis diagram at same time to find the most probable path.

Which of the following indicates the number of input bits that the current output is dependent upon?

How error detection and correction is done?

In soft decision approach 100 means?

Average effective information is obtained by

In synchronous transmission, receiver must stay synchronous for

Turbo codes are

Which requires bit transitions?

Which has comparatively high frequency component?

Which of the following is not a way to represent convolution code?

CRC uses

Which can detect two bit errors?

Which is more efficient?

Which can be used as an intermediate device in between transmitter entity and receiver entity?

Modulation and Demodulation Techniques

Information Theory and Communication Techniques

Waveform Logic, Pcm Encoding, Vocoder Analysis, and Antenna Radiations

Microwave Communication and Modulation

M-Ary Signalling and Pulse Shaping Techniques

Signal Filtering and Equalization Techniques

Information Theory and Coding Techniques

Algorithms and Techniques for Communication System Security and Error Correction

Modulation Schemes and Access Techniques for Spread Spectrum Systems

Digital and Analog Telecommunications Standards

Filters