Which error detection method uses one's complement arithmetic?

(a) Simply parity check

(b) Checksum

(c) Two-dimensional parity check

(d) CRC

The answer is Checksum

The procedure that yields the checksum from the data is called a checksum function or checksum algorithm. A good checksum algorithm will yield a different result, with high probability, when the data is accidentally corrupted; so that, if the checksums match, the data is very likely to be free of accidental errors.

Checksum functions are related to hash functions, fingerprints, randomisation functions, and cryptographic hash functions. However, each of those concepts has different applications and therefore different design goals. Check digits and parity bits are special cases of checksums, appropriate for small blocks of data (such as Social Security numbers, bank account numbers, computer words, single bytes, etc.). Some error-correcting codes are based on special checksums that not only detect common errors but also allow the original data to be recovered in certain cases.