Which computer hardware device is used to convert data from a digital format into a format suitable for an analog transmission medium? Select the best answer from the given options.

Correct option is A

The device used to convert data from a digital format into a format suitable for an analog transmission medium is a Modem (Modulator-Demodulator). A modem modulates the digital data from a computer into analog signals for transmission over analog communication lines (like phone lines or cable systems) and demodulates incoming analog signals back into digital form for the computer to process.
Important Key Points:
1. Digital to Analog Conversion: A modem converts the digital data from a computer into analog signals to transmit it over analog communication mediums.
2. Modulation and Demodulation: The modem works by modulating digital data into an analog signal for transmission and demodulating analog signals back to digital at the receiving end.
3. Use in Dial-up Connections: Modems were essential for dial-up internet connections, enabling communication over traditional phone lines.
4. Transmission Efficiency: Modems enable efficient transmission of data over mediums like phone lines, which were initially designed for analog voice transmission.
5. Widely Used for Communication: Modems are widely used in broadband, DSL, and cable internet connections to convert signals for transmission and reception.
Knowledge Booster:
· Option (b): A Switch is a networking device that directs data packets between devices on a network based on MAC addresses. It does not perform conversion between digital and analog formats.
· Option (c): A Repeater is used to extend the range of a network signal by amplifying and retransmitting it. It does not convert data from digital to analog or vice versa.
· Option (d): A Hub is a basic networking device that broadcasts data to all connected devices in a network. It does not perform any form of data conversion.