What is the purpose of a modem in a network connection?

The function of a modem in a network connection is crucial for communication between digital devices and the analog infrastructure of various communication lines. A modem, short for modulator-demodulator, converts digital signals from a computer into analog signals that can travel over traditional phone lines or cable systems. This allows digital data, such as emails or web pages, to be transmitted over distances using analog signals.

Conversely, when data is received, the modem demodulates the analog signals back into digital format so that the computer or other digital devices can process that information. This two-way conversion is essential for maintaining effective communication over networks that use both digital and analog technologies. Understanding this makes it clear why this choice accurately describes the primary purpose of a modem in networking.

The other options, while they describe functions associated with networking equipment, do not capture the specific role of a modem within that context. For example, amplifying signals pertains more to the operation of repeaters or signal boosters, while connecting a computer to a network could apply to numerous network devices. Managing network traffic is typically the role of routers or switches. Therefore, recognizing the specific conversion function that a modem serves highlights its importance in bridging the digital and analog worlds.