Quiz about Digital vs Analog Signals

Question 1

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 2

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 3

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 4

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 5

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

Accepted Answer

Both

Answer

Analog

Answer

Digital

Answer

Neither

Question 6

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

Accepted Answer

sampling

Answer

conversion

Answer

processing

Answer

translation

Question 7

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

Accepted Answer

sampling

Answer

conversion

Answer

processing

Answer

translation

Question 8

Numbers in an analog code can have _____ values.

Accepted Answer

any

Answer

only high

Answer

only low

Answer

only set

Question 9

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

Accepted Answer

analog

Answer

digital

Question 10

What is the primary difference between digital and analog signals?

Accepted Answer

Digital signals are discrete, while analog signals are continuous.

Answer

Digital signals are continuous, while analog signals are discrete.

Answer

Both digital and analog signals are continuous.

Answer

Both digital and analog signals are discrete.

Question 11

Which of the following is a characteristic of digital signals?

Accepted Answer

They are represented by binary values.

Answer

They can take any value within a range.

Answer

They are more susceptible to noise.

Answer

They require more bandwidth than analog signals.

Question 12

In terms of signal processing, why are digital signals preferred over analog signals?

Accepted Answer

Digital signals are easier to store and process.

Answer

Analog signals are more accurate.

Answer

Digital signals require more power.

Answer

Analog signals are less complex.

Question 13

How do digital signals represent information?

Accepted Answer

Using binary code (0s and 1s).

Answer

Through continuous waveforms.

Answer

By varying amplitude and frequency.

Answer

By changing phase angles.

Question 14

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

Accepted Answer

Higher precision in representation.

Answer

Less affected by noise.

Answer

Easier to compress.

Answer

More compatible with modern technology.

Question 15

What is a common use of digital signals in everyday technology?

Accepted Answer

Digital audio and video streaming.

Answer

AM radio broadcasting.

Answer

Vinyl record players.

Answer

Analog television.

Question 16

Why are digital signals less prone to degradation over long distances compared to analog signals?

Accepted Answer

They can be easily amplified without loss of quality.

Answer

They have higher frequencies.

Answer

They are immune to electromagnetic interference.

Answer

They use less bandwidth.

Question 17

In what form do digital signals transmit data?

Accepted Answer

Discrete packets.

Answer

Continuous waves.

Answer

Analog waves.

Answer

Frequency modulated waves.

Question 18

Which of the following best describes the conversion process from analog to digital signals?

Accepted Answer

Quantization and sampling.

Answer

Modulation and demodulation.

Answer

Amplification and attenuation.

Answer

Filtering and equalization.

Question 19

What is a disadvantage of digital signals compared to analog signals?

Accepted Answer

They are less accurate in representing real-world signals.

Answer

They are more susceptible to noise.

Answer

They require more bandwidth.

Answer

They are harder to process and store.

Digital vs Analog Signals

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