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collision domain - technical definition
A physical region of a local area network (LAN) in which data collisions can occur. Collisions are most likely in LANs, such as Ethernets, that use non-deterministic medium access control (MAC) protocols such as carrier sense multiple access with collision detection (CSMA/CD). See also CSMA/CD, Ethernet, LAN, MAC, and non-deterministic.
See collision domain in Computer