Which method is used to verify the integrity of transmitted data?

The method used to verify the integrity of transmitted data is a parity check. A parity check adds an additional bit to a data set to ensure that the number of bits with value '1' is even or odd, depending on the type of parity used (even or odd parity). This simple error detection mechanism helps identify single-bit errors that may occur during transmission.

While checksums and hashing also serve to verify data integrity, they employ different techniques and are often more robust for larger data sets by using more complex algorithms. Checksums calculate a value based on the sum of the data's values, which can help identify errors, but might miss some types of inconsistencies. Hashing functions generate a fixed-size hash value from input data, which is significantly useful for validating the integrity of files or messages. However, in the context of the simplest form of integrity verification specifically mentioned in the question, a parity check is most directly associated with verifying that data has been transmitted without corruption.