Network protocols are sets of rules and conventions used to communicate between devices on a network. One commonly used network protocol is the Internet Protocol (IP), which is used for sending and receiving data packets between devices on the Internet. Another important network protocol is the Transmission Control Protocol (TCP), which ensures reliable delivery of data packets and is commonly used in applications such as web browsing and email. Other network protocols include the User Datagram Protocol (UDP), which is used for sending data quickly but without ensuring its delivery, and the Hypertext Transfer Protocol (HTTP), which is used for transferring web pages and other resources over the Internet. Overall, network protocols play a crucial role in enabling communication and data exchange between devices on a network, and understanding how they work is essential for building and maintaining network infrastructure.