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Which among the device that converts computer output into a form that can be transmitted over a telephone line?

  • A.Teleport
  • B.Multiplexer
  • C.Concentrator
  • D.Modem

Answer: D

Correct answer: Modem

A telephone line carries an analogue signal, so computer output must be modulated onto it and demodulated at the far end - the two operations that give the modem its name. A multiplexer combines several signals on one channel but does not convert between digital and analogue.

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