Which of the following data validation controls is a numeric value computed to provide assurance that the original value has not been altered in construction or transmission?
A)Hash total.
B)Parity check.
C)Encryption.
D)Check digit.

Question

Quizplus · Accepted Answer

A check digit is a numeric value computed to provide assurance that the original value has not been altered in construction or transmission. It is commonly used in barcodes, credit card numbers, and identification numbers to prevent errors caused by mistakes in data entry or transmission. A hash total is a numeric value calculated by combining all the data in a particular set or batch, and can be used to verify the accuracy of the data. A parity check is a simple method of error detection based on the number of bits that are set to 1 in a binary code. Encryption is a method of encoding data to make it unreadable by unauthorized users.

Which of the Following Data Validation Controls Is a Numeric