What is the function of a modem in a network?

The function of a modem in a network is primarily to convert digital signals to analog and vice versa. Modems are essential for facilitating communication between digital devices, such as computers, and analog transmission mediums, such as telephone lines or cable systems.

When a digital signal needs to be sent over an analog medium, the modem modulates the digital signal into an analog format, which can then be transmitted over the network. Conversely, upon receiving an analog signal, the modem demodulates it, converting it back into a digital format that the receiving device can understand. This dual functionality enables computers and other digital devices to communicate over traditional telephone and cable infrastructure, making modems critical for internet access and data transmission.

Other options focus on different functions that are not associated with modems. For instance, encrypting data is a security function that ensures information is securely transmitted but does not pertain to the conversion process handled by modems. Managing traffic of data packets typically involves networking devices like routers or switches rather than modems, while storing network configuration settings is a function more related to devices like routers or servers than to modems. Thus, the choice related to the conversion of signals accurately represents the primary role of a modem in a network.