Which term describes a method of ensuring that the data in the computer system matches the original source data, possibly by double entry?

Which term describes a method of ensuring that the data in the computer system matches the original source data, possibly by double entry?

• A. Checksum
• B. Parity Check
• C. Data Integrity
• D. Verification (data input)

Answer: (D)

Data input verification focuses on ensuring the data captured matches the original source, often by entering it twice and comparing the two entries. This method directly guards against transcription mistakes at the moment of input, catching errors before the data is stored or used. A checksum creates a numeric fingerprint to detect data corruption after transmission or storage, a parity check detects single-bit errors in binary data, and data integrity is the broader property of accuracy and consistency across a system rather than a specific input-time technique. So, the term that best fits the described practice is verification (data input).

Data input verification focuses on ensuring the data captured matches the original source, often by entering it twice and comparing the two entries. This method directly guards against transcription mistakes at the moment of input, catching errors before the data is stored or used. A checksum creates a numeric fingerprint to detect data corruption after transmission or storage, a parity check detects single-bit errors in binary data, and data integrity is the broader property of accuracy and consistency across a system rather than a specific input-time technique. So, the term that best fits the described practice is verification (data input).