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Which of the following is used to receive and send computer files over telephone lines?
1. Floppy disk
2. Light pen
3. Modem
4. MICR device

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Correct Answer - Option 3 : Modem

The correct answer is Modem.


  • A Modem (Modulator-Demodulator) is a hardware component that allows a computer or another device, such as a router or switch, to connect to the Internet.
  • It converts or "modulates" an analog signal from a telephone or cable wire to digital data (1s and 0s) that a computer can recognize.
  • It can also convert digital data from a computer or other device into an analog signal that can be sent over standard telephone lines.


  • Modems are not needed for fiber optic connections because the signals are transmitted digitally from beginning to end.

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