Question: The device used to carry digital data on analogue lines is called as

Answer:

The device used to carry digital data on analog lines is called a "modem."

Modem stands for "modulator-demodulator." It is a communication device that modulates digital data into analog signals for transmission over analog lines and demodulates the received analog signals back into digital data.

In the context of computer networking, modems are commonly used to connect computers or network devices to the internet or other remote networks using traditional telephone lines or cable TV lines. The modem converts the digital data generated by the computer into analog signals that can be transmitted over the analog lines, and vice versa.

Modems can operate at different speeds, typically measured in bits per second (bps) or more commonly in kilobits per second (Kbps) or megabits per second (Mbps). The speed of a modem determines the rate at which data can be transmitted and received over the communication link.

With advancements in technology, digital communication methods such as DSL (Digital Subscriber Line) and cable modems have become more prevalent, offering higher speeds and more efficient data transmission over existing analog lines.

In summary, a modem is the device used to carry digital data on analog lines by converting digital signals into analog signals for transmission and vice versa.