代写代考 MATH3411 INFORMATION, CODES & CIPHERS Test 2 2018 S2 SOLUTIONS
MATH3411 INFORMATION, CODES & CIPHERS Test 2 2018 S2 SOLUTIONS Multiple choice: b, c, a, e, c, c, d, b, b, a 1. (b): This is the only codeword which has 1221 in the information positions. 2. (c): Ifthesentcodewordisx,theny=x+aei forsomea∈Z3 andi∈{1,…,7}. Since S(y) = HyT = 022T = 2HeT5 , twice the 5th column of […]
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