What do communication devices allow computers to do?

Communication devices play an essential role in enabling computers to send and receive data, which is fundamental for various network interactions. These devices, such as modems, routers, and network interface cards, facilitate the transfer of information between computers and other networked devices, allowing for data exchange over local networks and the internet. This capability is crucial for activities such as browsing the web, sending emails, and participating in online communication.

While connecting to printers and establishing physical connections are important in their own right, they are not the primary function of communication devices. Control over network configurations deals with managing settings and protocols on networking equipment, which also differs from the essential data transmission role that communication devices serve.