Network hardware refers to the physical devices that are essential for communication and data transfer within a computer network. This includes devices like routers, switches, hubs, and modems. Each of these components plays a specific role in managing data traffic, connecting different devices, and ensuring that information reaches its intended destination efficiently. In addition to these core devices, network hardware can also include firewalls for security, access points for wireless connectivity, and cables for physical connections. Together, these components create a robust infrastructure that supports both local and wide area networks, enabling seamless communication between computers and other devices.