Computer Science for IGCSE & O level - Hardware (Section 14 - No. 3)
What is the role of a modem in a network?
To assign IP addresses.
To translate domain names into IP addresses.
To convert the digital signal from a computer into a signal that can be transmitted over a telephone or cable line, and vice versa.
To manage network security.
Forklaring
A modem converts digital signals for transmission over a line.