A ________ must be used to convert an analog signal to a digital one, when trying to transmit data over a typical phone line.
A) fibre optic switch
B) modem
C) frame relay
D) tunnel
E) SOHO

Question

Quizplus · Accepted Answer

A modem (short for modulator-demodulator) is a device that converts analog signals to digital signals and vice versa. When transmitting data over a phone line, the modem converts the digital signals from the computer into analog signals that can travel over the phone line, and then converts them back into digital signals at the receiving end. Therefore, a modem must be used to convert an analog signal to a digital one when transmitting data over a typical phone line.

A ________ Must Be Used to Convert an Analog Signal