What is the purpose of verification checks?

What is the purpose of verification checks?

• A. They forecast system performance.
• B. They look at data to see if it makes sense and is consistent with other data.
• C. They ensure the data is formatted.
• D. They compute a hash to verify integrity.

Answer: (B)

Verification checks focus on data quality by examining whether values are sensible and consistent with other data. They catch errors early, such as numbers outside realistic ranges, mismatched fields, or records that don’t align with related information. For example, if a birth year implies an age that conflicts with another record, or a total field doesn’t match the sum of its parts, verification checks flag these issues. This explains why the best choice is about looking at data to see if it makes sense and is consistent with other data. The other ideas miss the point: forecasting system performance is about predicting future behavior, not validating data; ensuring data formatting is about structure, not actual correctness; computing a hash verifies data integrity or tamper-detection, which is a different kind of check.

Verification checks focus on data quality by examining whether values are sensible and consistent with other data. They catch errors early, such as numbers outside realistic ranges, mismatched fields, or records that don’t align with related information. For example, if a birth year implies an age that conflicts with another record, or a total field doesn’t match the sum of its parts, verification checks flag these issues. This explains why the best choice is about looking at data to see if it makes sense and is consistent with other data.

The other ideas miss the point: forecasting system performance is about predicting future behavior, not validating data; ensuring data formatting is about structure, not actual correctness; computing a hash verifies data integrity or tamper-detection, which is a different kind of check.