ITPEC FE Morning April 2023 Question 19
ITPEC FE Morning April 2023 — Question 19 of 80
Incremental Backup — backs up only changed files and resets the update flag.
How backup types work:
- Full backup — copies all files, resets the archive bit
- Differential backup — copies only files changed since last full backup, does not reset the archive bit
- Incremental backup — copies only files changed since last backup (full or incremental), resets the archive bit
Key difference — archive bit behavior:
- Incremental: reset after backup → next time only new changes are copied
- Differential: left unchanged → accumulates all changes since last full backup
Why not others:
- (a) All files + flag unchanged — variant of full backup
- (b) All files + flag reset — normal full backup
- (c) Only changed + flag unchanged — differential backup
- (d) ✓ Only changed + flag reset — incremental backup
Key rule: Incremental = changed files only + reset flag. Differential = changed files only + keep flag.
AI-generated — may contain errors
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