Computers use network interface cards (NICs) to connect to networks. For wired connections, Ethernet cards are common. For wireless, Wi-Fi cards are used. These devices allow computers to send and receive data over networks.
NICs can be built into the motherboard or added as separate cards. They act as a bridge between the computer and the network. NICs handle tasks like addressing and routing data packets. This allows computers to communicate over local networks or the internet.