A device that strengthens a communication signal before it is transmitted and weakens it after it is received is called a
Correct answer: A. repeater
- A. repeater
- B. Router
- C. Switch
- D. Modem
Explanation
A repeater receives a weak signal, amplifies it (strengthens it), and then transmits it onward. This is useful for extending the range of a signal, especially in situations where the signal might be attenuated (weakened) by distance or obstacles.
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