A network is a collection of computers and devices connected together to share resources and information. These connections can be wired, using cables, or wireless, using signals. Networks can be small, like a home network, or large, like a corporate network, and they enable communication and data exchange among users. The Internet is a vast global network that connects millions of smaller networks. It allows users to access information, communicate, and share resources across the world. The Internet uses standardized protocols, such as TCP/IP, to ensure that data can be transmitted reliably between different devices and networks.