Quiz about Analog vs Digital Signals

Question 1

Which of the following is an advantage of digital over analog?

Accepted Answer

Digital controls move objects in predictable, exact increments.

Answer

Digital controls allow you more control over exact movement and direction.

Answer

Digital calculations give you more accurate measurements.

Answer

Digital devices generate stronger, more precise signals and waves.

Question 2

Analog signals can be converted to digital through a process called _____.

Accepted Answer

sampling

Answer

conversion

Answer

processing

Answer

translation

Question 3

Analog signals can be converted to digital through a process called _____.

Accepted Answer

sampling

Answer

conversion

Answer

processing

Answer

translation

Question 4

Which type(s) of signal(s) can be transmitted as radio waves?

Accepted Answer

Both

Answer

Analog

Answer

Digital

Answer

Neither

Question 5

Why are digital signals less likely to be affected by noise than analog signals?

Accepted Answer

Non-binary noise can be easily filtered out by digital systems.

Answer

There are more sources of analog noise than digital noise.

Answer

Digital waves have higher amplitudes, and thus overpower noise

Answer

Analog radios add noise to the signals they receive to improve sound quality.

Question 6

Digital encoding sends or stores information using quantities that

Accepted Answer

can only have specific values.

Answer

can vary continuously.

Answer

have no numeric gaps between one another.

Answer

create smooth curves inside a sound wave.

Question 7

AM and FM radio stations

Accepted Answer

change the amplitude or frequency of waves to encode sounds.

Answer

switch between analog and digital signals to broadcast sound waves.

Answer

transmit sound using multiple frequency ranges, including radio waves, visible light, and ultraviolet light.

Answer

convert broadcasts into binary code.

Question 8

Is music playing from a record an analog or digital signal?

Accepted Answer

analog

Answer

digital

Question 9

Which type(s) of signal(s) can be easily corrected to remove noise?

Accepted Answer

digital

Answer

analog

Answer

both

Answer

neither

Question 10

Analog signals can be converted to digital through a process called ____________.

Accepted Answer

sampling

Answer

conversion

Answer

processing

Answer

translation

Question 11

Which of the following best describes an analog signal?

Accepted Answer

A) A signal that varies continuously over time.

Answer

B) A signal that has discrete levels.

Answer

C) A signal that is immune to noise.

Answer

D) A signal that can only be transmitted digitally.

Question 12

What is a key advantage of digital signals over analog signals?

Accepted Answer

B) Digital signals can be easily compressed and stored.

Answer

A) Digital signals are more susceptible to noise.

Answer

C) Digital signals require more bandwidth.

Answer

D) Digital signals are less reliable.

Question 13

In which of the following applications would you most likely use an analog signal?

Accepted Answer

B) Broadcasting a live radio show.

Answer

A) Streaming a video online.

Answer

C) Sending an email.

Answer

D) Storing data on a computer.

Question 14

How do digital signals represent information?

Accepted Answer

B) By using discrete binary values.

Answer

A) By using continuous waveforms.

Answer

C) By using varying amplitudes.

Answer

D) By using frequency modulation.

Question 15

Which device is an example of using digital signals?

Accepted Answer

B) A digital thermometer.

Answer

A) A vinyl record player.

Answer

C) An analog clock.

Answer

D) A traditional radio.

Question 16

Why are analog signals more prone to distortion than digital signals?

Accepted Answer

B) Analog signals are affected by environmental noise.

Answer

A) Analog signals have infinite resolution.

Answer

C) Analog signals are encoded in binary.

Answer

D) Analog signals require less bandwidth.

Question 17

What is the primary method of encoding information in digital signals?

Accepted Answer

C) Binary encoding.

Answer

A) Amplitude modulation.

Answer

B) Frequency modulation.

Answer

D) Phase modulation.

Question 18

Which of the following is a characteristic of analog signals?

Accepted Answer

C) They can vary smoothly over a range of values.

Answer

A) They have a finite number of possible values.

Answer

B) They are represented by binary code.

Answer

D) They are immune to noise.

Analog vs Digital Signals

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