Question
Both analog and digital waves can experience noise as they travel. Noise is any unwanted signal that distorts or reshapes the original wave.
Analog and digital waves both need to be amplified after traveling a certain distance. Digital waves are amplified by a device known as a digital repeater. Analog waves are amplified by a device known as an amplifier.
A digital repeater works by reconstructing a new square wave wave from the incoming wave, even if the incoming wave includes noise. An analog amplifier simply amplifies all of the information it receives, including noise. The diagram below illustrates how the resulting waves might appear.
The example above suggests that
A.
noise is less of a problem for digital waves than for analog waves.
B.
digital waves cannot have noise or other distortions removed from them.
C.
there is no clear advantage to transmitting digital waves over analog waves.
D.
analog waves do not experience as much noise as digital waves
Analog and digital waves both need to be amplified after traveling a certain distance. Digital waves are amplified by a device known as a digital repeater. Analog waves are amplified by a device known as an amplifier.
A digital repeater works by reconstructing a new square wave wave from the incoming wave, even if the incoming wave includes noise. An analog amplifier simply amplifies all of the information it receives, including noise. The diagram below illustrates how the resulting waves might appear.
The example above suggests that
A.
noise is less of a problem for digital waves than for analog waves.
B.
digital waves cannot have noise or other distortions removed from them.
C.
there is no clear advantage to transmitting digital waves over analog waves.
D.
analog waves do not experience as much noise as digital waves
Answers
GPT-4o mini
The correct answer is:
**A. noise is less of a problem for digital waves than for analog waves.**
This statement reflects that digital repeaters can reconstruct a clean signal from a noisy input, while analog amplifiers amplify everything, including the noise, making digital transmission generally more robust against noise and distortion.
**A. noise is less of a problem for digital waves than for analog waves.**
This statement reflects that digital repeaters can reconstruct a clean signal from a noisy input, while analog amplifiers amplify everything, including the noise, making digital transmission generally more robust against noise and distortion.