PPT Slide
????The reason light does not escape from the sides of a fiber optic cable is because the cable lies underground.
Due to total internal reflection.
??? The Hamming distance between any two valid codewords in the 1-bit odd parity scheme is 2.
You need to change at least two bits to maintain parity and get a new codeword.
??? Selective-Reject ARQ makes more efficient use of the sequence number space compared to Go-back-N ARQ
Uses only half the sequence number space due to the ambiguity problem.