Quiz 1: Modulation Techniques and Communication

Modulation, Demodulation, and Repeaters

1. For analog signals, which of the following is NOT one of the 3 popular modulation techniques?

A. Amplitude Modulation
B. Transmission Modulation
C. Phase Modulation
D. Frequency Modulation

2. Which of the following is a good example of why we use modulation?

A. Reduce interference
B. Decrease signals
C. Get rid of redundant signals
D. To allow signal interference

3. Which of the following is a good explanation of why we use repeaters?

A. To increase transmission speeds
B. Reduce interference
C. Restore signal from attenuation
D. To power usage

4. True or False: After modulating a message signal with a carrier signal, it is necessary to demodulate the signal when it arrives at the destination.

True
False

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