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Basic Computer/IT QUESTION #11534
Question 1
Which networking device converts digital computer data into analogue signals for transmission over phone lines?
  • Modem✔️
  • Multiplexer
  • Modulator
  • Demodulator
Correct Answer Explanation
A Modem (Modulator-Demodulator) converts digital data to analogue signals for transmission over analogue telephone lines (modulation) and converts incoming analogue signals back to digital (demodulation). Dial-up modems reached 56 Kbps. Modern broadband modems handle DSL, cable, and fibre at much higher speeds.