Computer networking is the practice of connecting computers and other devices to share resources and information. This can include sharing files, accessing the internet, and using printers. Networks can be small, like a home network, or large, like the Internet, which connects millions of devices worldwide. Networks can be wired, using cables, or wireless, using signals. They rely on various protocols, such as TCP/IP, to ensure that data is transmitted accurately and efficiently. Networking is essential for communication in both personal and professional settings, enabling collaboration and access to information across different locations.