What is CSMA/CA?
Collision is the situation that occurs when two or more devices attempt to send a signal along the same channel at the same time. The result of a collision is generally a garbled message. All computer networks require some sort of mechanism to either prevent collisions altogether or to recover from collisions when they do occur. CSMA/CA, which stands for Carrier Sense Multiple Access with Collision Avoidance is a Media Access Protocol which get rid of the problem of the collision.