IEEE 802.3 (Ethernet)

IEEE 802.3, commonly known as Ethernet, is a set of standards that define how wired computer networks communicate. It specifies the physical connections (like cables and ports) and data transfer rules, enabling devices such as computers, printers, and routers to exchange information efficiently and reliably within local area networks (LANs). Ethernet ensures that data packets are transmitted correctly and manages how devices share the network medium to avoid collisions. It's the foundational technology behind most wired network connections, providing fast, stable, and standardized communication across business and home environments.