CISA Domain 1 Practice Exam

The method that provides assurance that transposition errors are detected is the use of check digits. Check digits are a form of redundancy check used to verify the integrity of numerical data. They work by adding an additional digit to a number, which is calculated based on the other digits in a predetermined way. This calculation allows for the detection of common errors, such as transposition errors where two digits are switched in position.

When a number with a check digit is processed or transmitted, the receiving system can recalculate the check digit based on the received digits and compare it to the check digit originally attached. If the two check digits do not match, it indicates an error, including transposition errors, thus providing a reliable method for error detection.

In contrast, validation processes and range checks focus on ensuring that data conforms to predefined criteria or lies within acceptable limits, but they do not specifically target transposition errors. Real-time logging is primarily for tracking events and actions within a system and does not directly facilitate error detection related to transposition or data integrity. Therefore, check digits are particularly effective in identifying and assuring the correction of transposition errors in data entries.