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Ethernet is a family of networking technologies commonly used in local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs).

Developed in the 1970s by Xerox PARC, Ethernet has evolved to become the most widely installed network technology due to its speed, reliability, and ease of deployment. 

  • Standardized Networking: Ethernet is standardized by IEEE (Institute of Electrical and Electronics Engineers) under IEEE 802.3. It defines the physical and data link layers of the OSI (Open Systems Interconnection) model.

  • Wired Connection: Ethernet primarily refers to wired networking technology, where devices are connected using cables. The most common types of Ethernet cables are Cat5, Cat5e, Cat6, and Cat6a, each supporting different bandwidths and speeds.

  • Speeds and Performance: Over the years, Ethernet technology has evolved from its original 10 Mbps (megabits per second) to fast Ethernet (100 Mbps), gigabit Ethernet (1 Gbps), and more recently to 10 Gbps, 40 Gbps, and even 100 Gbps in some advanced implementations.

  • LAN Connectivity: Ethernet is commonly used for connecting devices in a LAN, such as computers, printers, and routers, allowing for efficient sharing of resources and data within a local, contained network.

Due to its reliability, scalability, and ease of installation and maintenance, Ethernet remains a fundamental technology for local area networks in both residential and commercial settings.

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