Which error detection method consists of just one redundant bit per data unit?

A _______ error means that two or more bits in the data unit have changed.

In modulo-2 arithmetic, we use the _______ operation for both addition and subtraction

CRC detection method is based on _______ operation.

The Hamming Distance between equals codewords is _______.

In _______ error correction, the receiver corrects errors without requesting retransmission.

At the CRC checker, _______ means that the data unit is damaged.

_______ is an error detection checking technique that appends a sequence of redundant bits derived from binary division to the data unit.

The checksum bits for 555 and 666 hexadecimal data is _______.