Computer Networks

1:

Bit stuffing refers to

A. inserting a '0' in user stream to differentiate it with a lag
B. inserting a '0' in lag stream to avoid ambiguity
C. appending a nibble to the lag sequence
D. appending a nibble to the use data stream
 

Answer : A

Explanation :
Bit stuffing is required when there is a flag of bits to represent one of the incidents like start of frame, end of frame, etc, If same lag of bits appear in the data stream, a zero can be inserted. The receiver deletes this zero from the data stream.

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Option: A

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