What is CSMA/CA?

What is CSMA/CA?
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Answer :

∙ CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance) is a protocol for carrier  transmission in 802.11 networks.  
∙ CSMA/CA acts to prevent collisions before they happen.  
∙ In CSMA/CA, as soon as a node receives a packet that is to be sent, it checks to be sure the  channel is clear.
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