Computer Networks Physical layer Mcqs with answers

Networks Physical layer Multiple Choice Questions (MCQ) should be practiced to improve the networking skills required for various interviews (campus interview, walk-in interview, company interview), placements, entrance exams and other competitive examinations.

1.
The physical layer is concerned with the movement of _______ over the physical medium.

Programs

Dialogs

Protocols

Bits

3.
Before data can be transmitted, they must be transformed to ________.

Periodic signals

Electromagnetic signals

Aperiodic signals

Low-frequency sine waves

5.
The physical layer concerns with

Bit-by-bit delivery

Process to process delivery

Application to application delivery

None of the above

6.
The physical layer translates logical communication requests from the ______ into hardware specific operations.

Data link layer

Network layer

Trasnport layer

Application layer

7.
The term ……… describes the position of the waveform relative to time 0.

Frequency

Phase

Phase Shift

Time period

8.
In a frequency-domain plot, the horizontal axis measures the ________.

Peak amplitude

Frequency

Phase

Slope

9.
In a time-domain plot, the horizontal axis is a measure of ________.

Signal amplitude

frequency

Phase

Time

10.
If the bandwidth of a signal is 5 KHz and the lowest frequency is 52 KHz, what is the highest frequency?

5 KHz

10 KHz

47 KHz

57 KHz

11.
What is the bandwidth of a signal that ranges from 1 MHz to 4 MHz?

4 MHz

1 KHz

3 MHz

None of the above

13.
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.

One-half

Twice

The same as

Indeterminate from

14.
A sine wave is ________.

Periodic and continuous

Aperiodic and continuous

Periodic and discrete

Aperiodic and discrete

15.
If the maximum amplitude of a sine wave is 2 V, the minimum amplitude is ________ V.

2

1

-2

Between -2 and 2

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