Network communication refers to the exchange of data between devices over a network. This can occur through various methods, such as wired connections using cables or wireless connections using signals. Devices like computers, smartphones, and servers communicate using protocols, which are sets of rules that ensure data is sent and received correctly. In network communication, data is often broken down into smaller packets for efficient transmission. These packets travel through routers and switches, which direct them to their destination. Common examples of network communication include the internet, local area networks (LANs), and cloud services, all of which rely on established protocols like TCP/IP to function effectively.