CSMA/CD (Carrier Sense Multiple Access / Collision Detection) is the protocol used in Ethernet networks to ensure that only one network node is transmitting on the network wire at any one time.
Carrier Sense means that every Ethernet device listens to the Ethernet wire before it attempts to transmit. If the Ethernet device senses that another device is transmitting, it will wait to transmit.
Multiple Access means that more than one Ethernet device can be sensing (listening and waiting to transmit) at a time.
Collision Detection means that when multiple Ethernet devices accidentally transmit at the same time, they are able to detect this error.
Posted by: Wasim Javed
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