ITPEC IP April 2020 Question 20
ITPEC IP April 2020 — Question 20 of 100
Keeping the original file and later comparing it with the modified file identifies exactly what content changed. A difference operation can show additions, deletions, and replacements at record or field level.
Answer (b)
Why not others:
- file size and modification time indicate that a change may have occurred but not what changed
- record count misses modifications that do not add or remove records
- sorting by a key changes order and provides no prior version for comparison
Key rule: Detect specific modifications by comparing before-and-after versions or by recording a detailed change log.
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