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What is Ethernet Access Scheme? Ethernet Access Scheme is called Carrier Sense Multiple Access with Collision Detect (CSMA/CD). The presence of wave in the network is determined by accessing Ethernet by multiple systems using CSMA. CSMA listens for a message is being transmitted when the interface of has a packet to transmit. When no transmission is sensed, transmission is started by the host. Each transmission is limited in duration as there is maximum packet size.
Multiple systems can access Ethernet simultaneously and each machine determines whether the network is idle by sensing whether the wave is present.
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