What is a “modem”?
a) A device that converts digital signals into analog signals and vice versa
b) A data storage device
c) A hardware component for encryption
d) A device used for printing documents
Answer:
a) A device that converts digital signals into analog signals and vice versa
Explanation:
A modem (modulator-demodulator) is a device that converts digital signals from a computer into analog signals for transmission over phone lines or cable and vice versa. It enables computers to communicate over networks like the internet.
Modems are essential for connecting to the internet, particularly in environments where analog phone lines are used. They help translate the computer’s digital data into a form that can be transmitted and then converted back into digital form on the receiving end.
With modern broadband internet, modems are often combined with routers in a single device to simplify the setup and provide both internet connectivity and network routing functions.