Question

In a data link protocol, the frame delimiter flag is given by 0111. Assuming that bit stuffing is employed, the transmitter sends the data sequence 01110110 as

• A. 011101100
• B. 011010110
• C. 01101011
• D. 0110101100

Answer 1

The correct option is D 0110101100

Frame delimiter flag = 0111

• If we put 0 after first 1 i.e. 01011, there is very high probability that in message I followed by 0, so need, too many bits to transmit data.
• So we need to put 0 after two 1 followed by 0 i.e., 01101

Hence data to be send = 0110101100