Certified Information Systems Auditor (CISA) — Question 356

Which of the following is the MOST effective accuracy control for entry of a valid numeric part number?

Answer options

• A. Comparison to historical order pattern
• B. Hash totals
• C. Online review of description
• D. Self-checking digit

Correct answer: D

Explanation

The self-checking digit is specifically designed to validate numeric entries by providing a means to confirm the accuracy of the number entered. Other options, like comparison to historical patterns or online reviews, do not directly verify the correctness of the numeric part number itself, which makes them less effective for accuracy control.