Quiz about Digital and Analog Waves

Question 1

The gray plot and red plot attempt to transmit the same signal in the graph below. What is the best conclusion that can be drawn?

Accepted Answer

The red plot is a discrete digital signal.

Answer

The gray plot is a discrete analog signal.

Answer

The red plot is a discrete analog signal.

Answer

The red plot cannot transmit a useful signal because of its box like shape.

Question 2

What are some major differences between analog and digital signals? Select all that apply.

Accepted Answer

Analog sends continuous wave signals but digital sends discreet wave pulse signals.

Accepted Answer

Analog sends continuous wave signals but digital sends wave pulse signals.

Answer

Digital sends continuous wave signals, but analog sends wave pulse signals.

Answer

Digital sends continuous wave signals, but analog sends discreet wave pulse signals.

Question 3

What is the amplitude of the blue wave?

Accepted Answer

2

Answer

1

Answer

2.5

Answer

3

Answer

4

Question 4

In some situations, digital cable will produce a much crisper image than analog. What is one important cause of this?

Accepted Answer

Digital signals are not as susceptible to noise as analog.

Answer

Analog is incapable of producing images as crisp as digital.

Answer

Digital is always a better option than analog.

Answer

Analog signals transmit in discrete pulses which decreases transmission quality.

Question 5

What part is represented by the blue lines?

Accepted Answer

Amplitude

Answer

Crest

Answer

Resting Point

Answer

Wavelength

Question 6

The following is the graph of ___________________________

Accepted Answer

An analog signal

Answer

A digital signal

Question 7

The following is the graph of ___________________________

Accepted Answer

A digital signal

Answer

An analog signal

Question 8

What is the primary difference between analog and digital waves in terms of signal representation?

Accepted Answer

Analog waves are continuous, while digital waves are discrete.

Answer

Analog waves are discrete, while digital waves are continuous.

Answer

Both analog and digital waves are continuous.

Answer

Both analog and digital waves are discrete.

Question 9

Which of the following is a real-world application where digital signals are preferred over analog signals?

Accepted Answer

Digital television

Answer

AM radio broadcasting

Answer

Vinyl record players

Answer

Analog thermometers

Question 10

In an experiment comparing noise resistance, which type of signal is likely to perform better?

Accepted Answer

Digital signals, because they are less susceptible to noise

Answer

Analog signals, because they are continuous

Answer

Both perform equally well

Answer

Neither, as both are equally susceptible to noise

Question 11

How does the sampling rate affect the quality of a digital signal?

Accepted Answer

Higher sampling rates generally improve quality by capturing more detail.

Answer

Lower sampling rates improve quality by reducing data size.

Answer

Sampling rate does not affect digital signal quality.

Answer

Higher sampling rates decrease quality by introducing more noise.

Question 12

Which of the following best describes the process of converting an analog signal to a digital signal?

Accepted Answer

Quantization

Answer

Modulation

Answer

Amplification

Answer

Attenuation

Digital and Analog Waves

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