Describe the procedure known as byte stuffing, Computer Network Security

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Question:

(a) For the bit stream 010011, sketch the waveforms for each of the code indicated.

Assume the following: the signal level for the previous bit for NRZI was a 1 and was positive; the most recent preceding 1 bit (AMI) had
a negative voltage; and the most recent preceding 0 bit (pseudoternary) had a negative voltage. (Let 0 be positive for NRZ-L)

1403_Describe the procedure known as byte stuffing.png

(b) Describe fully how you can use a (11/7) Hamming code to:

(i) detect and;

(ii) correct by giving the correct transmitted character;

if an incorrect codeword representing character "K" is received: 

1224_Describe the procedure known as byte stuffing1.png

(ASCII value of "K" is 75)

(c) Describe the procedure known as byte stuffing. Explain why and when it is used and how it actually works.


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