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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 2 of 24

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Q11.
What is the bandwidth of a signal that ranges from 1 MHz to 4 MHz?

a.

4 MHz

b.

1 KHz

c.

3 MHz

d.

none of the above

Discuss
Answer: (c).3 MHz
Q12.
As frequency increases, the period ________.

a.

decreases

b.

increases

c.

remains the same

d.

doubles

Discuss
Answer: (a).decreases
Q13.
Given two sine waves A and B, if the frequency of A is twice that of B, then the period of B is ________ that of A.

a.

one-half

b.

twice

c.

the same as

d.

indeterminate from

Discuss
Answer: (b).twice
Q14.
A sine wave is ________.

a.

periodic and continuous

b.

aperiodic and continuous

c.

periodic and discrete

d.

aperiodic and discrete

Discuss
Answer: (a).periodic and continuous
Q15.
If the maximum amplitude of a sine wave is 2 V, the minimum amplitude is ________ V.

a.

2

b.

1

c.

-2

d.

between -2 and 2

Discuss
Answer: (c).-2
Q16.
A signal is measured at two different points. The power is P1 at the first point and P2 at the second point. The dB is 0. This means ________.

a.

P2 is zero

b.

P2 equals P1

c.

P2 is much larger than P1

d.

P2 is much smaller than P1

Discuss
Answer: (b).P2 equals P1
Q17.
________ is a type of transmission impairment in which the signal loses strength due to the resistance of the transmission medium.

a.

Attenuation

b.

Distortion

c.

Noise

d.

Decibel

Discuss
Answer: (a).Attenuation
Q18.
________ is a type of transmission impairment in which the signal loses strength due to the different propagation speeds of each frequency that makes up the signal.

a.

Attenuation

b.

Distortion

c.

Noise

d.

Decibel

Discuss
Answer: (b).Distortion
Q19.
________ is a type of transmission impairment in which an outside source such as crosstalk corrupts a signal.

a.

Attenuation

b.

Distortion

c.

Noise

d.

Decibel

Discuss
Answer: (c).Noise
Q20.
When propagation speed is multiplied by propagation time, we get the ________.

a.

throughput

b.

wavelength of the signal

c.

distortion factor

d.

distance a signal or bit has traveled

Discuss
Answer: (d).distance a signal or bit has traveled
Page 2 of 24

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