Multiple choice technology architecture

What files does a differential backup save ?

  1. All files irrespective of whether they were changed or not

  2. All files that were changed or added since the last full backup

  3. All files that were not saved during the previous incremental backup

  4. All files that were added since the last differential backup
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A differential backup saves all files that have changed since the last FULL backup (not since the last differential). Unlike incremental backups which only save changes since the last backup (full or incremental), differential backups accumulate all changes since the full backup, making restoration faster but requiring more storage space.

Keep practicing — related questions