Multiple choice

Which of the following functions is not carried by a modem?

  1. Modulation of digital signals into analogue

  2. Modulation of analogue signals into digital

  3. Modulation of data into images

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A modem is an external or internal device whose function is to transmit digital data over communication lines. Traditional modems once used frequently with dial-up networks convert analog data from telephone lines into computer digital data. Broadband modems transfer digital data between two digital devices. However, they do not modulate data into images.

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