What is CSMA (Carrier Sense Multiple Access)?

CSMA strategy was created to diminish the chances of collisions when at least two stations begin conveying their messages over the data link layer. In CSMA, the node confirms the absence of other traffic before sending on a common transmission medium. Carrier sense Multiple Access senses network signals on the carrier before sending any information. CSMA is executed in Ethernet networks with more than one network device connected to it.CSMA is a segment of the Media access control (MAC) protocol.