Which component enables a desktop computer to connect to a network?

• A. Modem
• B. Router
• C. Network adapter
• D. Ethernet cable

Answer: (C)

The network adapter is a crucial component that enables a desktop computer to connect to a network. It is a hardware device that allows the computer to communicate with other devices on a network, whether it's through a wired or wireless connection. For wired connections, the network adapter connects directly to the Ethernet cable, facilitating data transmission. For wireless connections, it enables the computer to connect to a wireless network by communicating with the router or access point.

While the other components listed play significant roles in networking, none of them directly enable the computer itself to connect to a network. The modem is responsible for establishing a connection to the Internet but is not directly involved in how the computer connects to a local network. The router helps direct traffic between devices on the network and the Internet but cannot connect a computer by itself. An Ethernet cable serves as the medium through which data is transmitted but requires a network adapter to function. Therefore, the network adapter is essential for enabling the desktop computer to access and utilize network resources.