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Railways PYQCBT 1 2016

RRB NTPC · Question 44

Name the device used to connect computers for communication via telephone lines. A. HUB B. Switch C. Repeater D. MODEM

  1. D

  2. A

  3. C

  4. B

Show answer & explanation

Answer: (A) D

Explanation

A MODEM (modulator–demodulator) connects computers over telephone lines by converting digital data into analog signals and back. Hubs, switches and repeaters connect devices within a network.