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In the carrier sense network, if prevailing condition is a 'channel busy', then technique used is

  • A.non-persistent then it results in randomised wait and sense
  • B.1-persistent then the channel is continually sensed
  • C.p-persistent then randomised retransmission is done
  • D.both (a) and (b)

Answer: B

Correct answer: 1-persistent then the channel is continually sensed

Under 1-persistent CSMA a station that finds the channel busy keeps listening and transmits the instant it goes idle, with probability 1. Non-persistent CSMA waits a random time before sensing again, and p-persistent transmits with probability p once the channel clears.

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