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Glossary of Data Communications Terms
Courtesy Enterprise-Wide Computing, Inc.
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Term:
collision detection
Definition:
1. The process by which a node on a local area network
monitors the communications line to determine when a
collision has occurred; that is, when two nodes have
attempted to transmit at the same time. Although network
stations usually avoid collisions by monitoring the line
and waiting for it to clear before transmitting, the method
is not foolproof. When a collision does occur, the two
nodes involved usually wait a random amount of time before
attempting to retransmit. See also contention, CSMA/CD. 2.
The process by which a game or simulation program
determines whether two objects on the screen are touching
each other. This is a time-consuming, often complicated
procedure; some computers optimized for graphics and games,
such as the Amiga, have special hardware built in
specifically to detect collisions.
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