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In step 4 of the CSMA/CA protocol, a station that successfully transmits a frame begins the protocol to transmit a second frame at step 2, rather than step 1. What rationale could justify this procedure over simply transmitting the second frame immediately (if the channel is sensed idle) ?

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  1. 10 July, 07:27
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    Using CSMA/CD to avoid collision.

    Explanation:

    If the channel is detected idle then the station does not transfer the second frame to avoid the collision by design of the CSMA/CD (Carrier sense multiple access / Collision detection). When received the protocol for first frame, a station to send second frame begins at step 2 rather than step1.

    Explanation:

    • Station A and Station B are transfers data frames, remain all not want to transmit data. In this situation, station A find the channel to be idle and send first frame then next second frame.

    • Similarly B received the transfer data at the same time. Then leads to collision.

    • Using CSMA/CD to avoid collision.
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