A device used to convert a computer's digital signal to an analogue signal for communication is called a:

Correct option is B

The correct device is a modem. A modem (short for Modulator-Demodulator) is used to convert digital signals from a computer into analogue signals for transmission over analogue communication lines (like telephone lines) and vice versa. This allows for internet communication between digital devices and networks using traditional analogue infrastructure.
Information Booster:
1. Modems are essential for connecting computers to the internet via telephone or cable lines.
2. The conversion process allows digital devices to communicate over analogue networks.
3. Modems can be internal or external devices and are often built into routers.
4. The demodulation process is used to convert incoming analogue signals back into digital form.
5. Modems are commonly used in both home and commercial internet setups.
Additional Information:
· (a) Bridge: A bridge connects two network segments and operates at the data link layer, but it doesn't convert digital to analogue signals.
· (c) Switch: A switch operates at the network level to forward data packets, but it doesn't handle signal conversion.
· (d) Network Interface Card (NIC): A NIC allows a computer to connect to a network, but it doesn't convert signals from digital to analogue.