Multiple choice

Through which medium, modem allows computers to exchange information?

  1. Coaxial cable

  2. Copper wire

  3. Telephone line

  4. Infrared waves
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 Telephone line is a medium through which modem allows computers to exchange information. Modem is a device that translates the digital signals form computer into analog signals that can travel across conventional phone lines. It is the combination of modulation and demodulation.  

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