A control that can be used to reduce the likelihood of an error occurring when an account number is entered into a computer is:
A) check digit
B) data encryption
C) preformatted screens
D) reasonableness checks

Question

Quizplus · Accepted Answer

A check digit is a control used to verify the accuracy and authenticity of data by calculating and adding a digit to the end of a sequence of numbers. The calculated digit is derived from the other digits in the sequence using a specific algorithm. When the account number is entered into the computer, the system checks the calculated check digit against the one provided by the user. If they match, the system assumes that the number is entered correctly. This control helps to reduce the likelihood of errors caused by mistyping or transposing the account number.

A Control That Can Be Used to Reduce the Likelihood