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Digital Communication > Digital com > Flashcards

Digital com Flashcards

1
Q

The interference caused by the adjacent pulses in digital transmission is called

a. Inter symbol interference
b. White noise
c. Image frequency interference
d. Transit time noise

A

Inter symbol interference

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2
Q

Equalization in digital communication

a. Reduces inter symbol interference
b. Removes distortion caused due to channel
c. Is done using linear filters
d. All of the above

A

All of the above

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3
Q

Digital communication is _______ to environmental changes?

a) Less sensitive
b) More sensitive
c) Does not depend
d) None of the mentioned

A

Less sensitive

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4
Q

Advantages of digital communication are

a) Easy multiplexing
b) Easy processing
c) Reliable
d) All of the mentioned

A

All of the mentioned

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5
Q

What is necessary for digital communication?

a) Precision timing
b) Frame synchronization
c) Character synchronization
d) All of the mentioned

A

All of the mentioned

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6
Q

What are the disadvantages of digital communication?

a) Needs more bandwidth
b) Is more complex
c) Needs more bandwidth & Is more complex
d) None of the mentioned

A

Needs more bandwidth & Is more complex

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7
Q

Examples of digital communication are

a) ISDN
b) Modems
c) Classical telephony
d) All of the mentioned

A

All of the mentioned

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8
Q

Which system uses digital transmission?

a) ISDN
b) LANs
c) ISDN & LANs
d) None of the mentioned

A

ISDN & LANs

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9
Q

Synchronization available in digital communication are

a) Symbol synchronization
b) Frame synchronization
c) Carrier synchronization
d) All of the mentioned

A

All of the mentioned

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10
Q

Digital system includes

a) Better encryption algorithm
b) Difficult data multiplexing
c) All of the mentioned
d) None of the mentioned

A

Better encryption algorithm

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11
Q

Analog to digital conversion includes

a) Sampling
b) Quantization
c) Sampling & Quantization
d) None of the mentioned

A

Sampling & Quantization

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12
Q

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

a. Modulation
b. Multiplexing
c. Quantization
d. Sampling

A

Quantization

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13
Q

The modulation techniques used to convert analog signal into digital signal are

a. Pulse code modulation
b. Delta modulation
c. Adaptive delta modulation
d. All of the above

A

All of the above

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Digital Communication (16 decks)

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