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Start and stop bits do not contain any "information" but are used in serial communication for

  1. Error detection
  2. Error correction
  3. Synchronization
  4. Slowing down the communications.
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Best answer

Answer is C

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in the communication system  we have no global clock because the  clock time at each place is not same

so we use start and stop bit

start bit tell us this is the starting of the data frame

and end bit tell use that this is the end of the data frame

so these two bit are used for synchronization
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+2 votes
Answer: C
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