Multiple choice general knowledge

For sending and receiving data from and to other computers around the world through telephone lines, we need

  1. FAX

  2. Modem

  3. Scanner

  4. Hub
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A Modem (modulator-demodulator) converts digital data to analog signals for transmission over telephone lines, and converts received analog signals back to digital. FAX is for document transmission, Scanner for digitizing physical documents, and Hub is for local network connections - none enable remote data communication.

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