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Which of the following device is used for converting digital signals from a computer into analog signals for transmission over a telephone line. - Informatics Practices

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Question

Which of the following device is used for converting digital signals from a computer into analog signals for transmission over a telephone line.

Options

  • Modem

  • Switch

  • Repeater

  • Router

MCQ
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Solution

Modem

Explanation:

A modem (short for modulator-demodulator) converts digital signals from a computer into analogue signals for transmission over telephone lines, and vice versa.

  • Modulation: Digital → Analog (for sending data)
  • Demodulation: Analog → Digital (for receiving data)
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