Exam-style question
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Describe how modulation enables multiple signals to share the same transmission medium.
Model answer
What a good answer should say
- By modulating different signals onto distinct carrier frequencies or using different modulation schemes, multiple signals can be transmitted over the same physical medium without interfering with each other.
- This multiplexing capability is a key purpose of modulation.
Explanation
Why this works
The answer shows that modulation allows multiplexing, enabling several signals to share a medium. It tests the student’s grasp of modulation’s purpose beyond simple transmission.
Common mistake
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