👉 Ethernet is a widely used networking technology that facilitates data transmission between devices over computer networks. It operates on the physical layer of the OSI model, using twisted-pair or fiber optic cables to transmit data in the form of electrical signals or light pulses. Ethernet works by breaking down a network into smaller segments called frames, which contain data, headers, and control information necessary for routing and error detection. Each device on the network has a unique MAC (Media Access Control) address, enabling devices to communicate directly with each other or be routed through switches. Ethernet supports various speeds, from 10 Mbps to 100 Gbps, and has evolved through multiple generations (like 802.11 for wireless and 802.3 for wired) to meet the growing demands of data transmission in modern networks.
