Digital vs. Analog Signals 2 Quiz

What is the main difference between analog and digital signals?

• Analog signals are continuous, digital signals are discrete.

• Analog signals use binary code, digital signals do not.

• Analog signals are more reliable than digital signals.

• Digital signals are always faster than analog signals.

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How can an analog signal be converted into a digital signal?

• By using a thermometer.

• By converting it to a continuous wave.

• Through a process called sampling.

• By using a digital clock.

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

• They are more colorful.

• They can be easily corrected to remove noise.

• They require no power to transmit.

• They are always cheaper to produce.

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Which of the following is an example of a digital signal?

• A sound wave from a record player.

• A radio wave from an AM station.

• A continuous light spectrum.

• A binary code of 1s and 0s.

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What does binary code consist of?

• A series of musical notes.

• A series of colors.

• A series of letters and numbers.

• A series of 1s and 0s.

Why might NASA prefer digital signals for space communication?

• They travel faster than light.

• They are cheaper to send.

• They are easier to decode by aliens.

• They can be corrected to remove noise over long distances.

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What is the process of converting an analog signal to digital called?

• Broadcasting

• Filtering

• Sampling

• Amplifying

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What is an example of an analog signal?

• A digital clock display

• A digital thermometer reading

• A sound wave from a vinyl record

• A binary code sequence

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What is the role of binary code in computers?

• To make computers colorful

• To control processes by turning circuits on and off

• To slow down processing speed

• To increase the size of data storage

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What does it mean to convert something to a code?

• To assign symbols to represent information

• To make it invisible

• To increase its size

• To make it louder

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