Received code:
0 1 0 1 1 1 0 1
This is not a correctly received code;
it is not in the code table.
However, it does have a Hamming distance of 1 from this code:
0 1 0 1 0 1 0 1
The receiver should assume that this was the transmitted
code and that a single bit error occurred in bit D2.
Thus, the correct data bits are as follows:
D1 = 0
D2 = 0
D3 = 1
D4 = 0