Token Ring
Token Ring is a local area network (LAN) technology that uses a token-passing protocol to control access to the network in a ring topology. It was standardized as IEEE 802.5 and was widely used in the 1980s and 1990s for corporate networks, offering deterministic performance and collision-free data transmission. Devices on the network pass a special frame called a token around the ring, with only the device holding the token allowed to transmit data at any given time.
Developers should learn about Token Ring primarily for historical context and to understand legacy systems, as it was a foundational networking technology that influenced modern LAN designs. It is relevant when working with or maintaining older enterprise networks, studying network protocols, or comparing it to current technologies like Ethernet for educational purposes in computer science or networking courses.