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Welcome to the Physical Layer MCQs Page

Dive deep into the fascinating world of Physical Layer with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Physical Layer, a crucial aspect of Networking. In this section, you will encounter a diverse range of MCQs that cover various aspects of Physical Layer, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Networking.

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Check out the MCQs below to embark on an enriching journey through Physical Layer. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Networking.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Physical Layer. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Physical Layer MCQs | Page 12 of 24

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Q111.
________ uses two carriers, one in-phase and the other quadrature.

a.

ASK

b.

PSK

c.

FSK

d.

QAM

Discuss
Answer: (d).QAM
Q112.
_________ conversion is the representation of analog information by an analog signal.

a.

Digital-to-analog

b.

Analog-to-analog

c.

Analog-to-digital

d.

Digital-to-digital

Discuss
Answer: (b).Analog-to-analog
Q113.
Analog-to-analog conversion is needed if the available bandwidth is _______.

a.

low-pass

b.

band-pass

c.

either (a) or (b)

d.

neither (a) nor (b

Discuss
Answer: (b).band-pass
Q114.
Which of the following is not an analog-to-analog conversion?

a.

AM

b.

PM

c.

FM

d.

QAM

Discuss
Answer: (d).QAM
Q115.
In _____ transmission, the carrier signal is modulated so that its amplitude varies with the changing amplitudes of the modulating signal.

a.

AM

b.

PM

c.

FM

d.

none of the above

Discuss
Answer: (a).AM
Q116.
In _____ transmission, the frequency of the carrier signal is modulated to follow the changing voltage level (amplitude) of the modulating signal. The peak amplitude and phase of the carrier signal remain constant, but as the amplitude of the information signal changes, the frequency of the carrier changes correspondingly.

a.

AM

b.

PM

c.

FM

d.

none of the above

Discuss
Answer: (c).FM
Q117.
In _____ transmission, the phase of the carrier signal is modulated to follow the changing voltage level (amplitude) of the modulating signal.

a.

AM

b.

PM

c.

FM

d.

none of the above

Discuss
Answer: (b).PM
Q118.
In _______, the peak amplitude of one signal level is 0; the other is the same as the amplitude of the carrier frequency.

a.

PSK

b.

OOK

c.

FSK

d.

none of the above

Discuss
Answer: (b).OOK
Q119.
How many carrier frequencies are used in BASK?

a.

2

b.

1

c.

0

d.

none of the above

Discuss
Answer: (a).2
Q120.
How many carrier frequencies are used in BFSK?

a.

2

b.

1

c.

0

d.

none of the above

Discuss
Answer: (a).2
Page 12 of 24

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