Two stations A and B are transmitting over CSMA/CD. Both attempt to transmit…

Two stations A and B are transmitting over CSMA/CD. Both attempt to transmit but they collide and A wins the backoff race. Now again both attempt to transmit but they collide. This time B wins the backoff race. What is the probability with which both A and B wins their respective backoff races?

  1. A.

    A - 0.5 and B – 0.625

  2. B.

    A – 0.25 and B – 0.125

  3. C.

    A – 0.75 and B – 0.25

  4. D.

    A – 0.5 and B – 0.25

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