Multiple choice technology operating systems

Which of The Following Can Convert The Computer Signals From Digital To Analog?

  1. ISDN

  2. Modem

  3. DSL

  4. HDSL
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B Correct answer
Explanation

A modem (modulator-demodulator) converts digital signals from a computer into analog signals for transmission over telephone lines, and converts incoming analog signals back to digital form. ISDN, DSL, and HDSL are digital communication technologies that don't perform this conversion - they transmit digital signals directly. The modem's core function is this digital-analog conversion, which is essential for traditional analog phone line communications.

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