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Consider a scnario of CSMA/CD network. Suppose A & B attempt to transmit a frame simultaneously and collide. Using exponential backoff algorithm A chooses K=0 and B chooses K=1. Again they collide and after the 2nd collision both A & B will choose K with equal probability from set:

  1. For A {0,1} and for B {0,1}
  2. For A {0,1,2,3} and for B {0,1}
  3. For A {0,1} and for B {0,1,2,3}
  4. For A {0,1,2,3} and for B {0,1,2,3}
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The answer is D because after collision, n=2 for both A and B therefore, k={0,1,2,3} for both A and B

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