bits stuffing

Question

Comments

a should be the answer!

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Yes A.

After you see 5 ones after 0 stuff a 0.

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what is the main concept behind the stuffing...?? after how many bits generally we stuff bits..??

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in general if anything is not given, just se whenever you encounter 5 consecutive 1's ,add a 0. otherwise scheme will be given in ques. this is the default case.

Answer 1

We know the format of flag is 01111110

now to differentiate data, from the flag, in bit stuffing ,we add a 0 ,whenever we see 0and 5 1's

so here

011111 now stuff a 0 then111011111 now stuff again a 0 then 0011

so 011111011101111100011

A is the answer