Question 89 of 144
SK0-005 server-administration Practice Question
A server hosts a database that requires nightly backups. The backup strategy uses a full backup every Sunday and differential backups on other days. On Wednesday, the server fails. Which backup sets are required to restore to the most recent state?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Last full backup and the latest differential backup
A differential backup contains all changes since the last full backup. Therefore, only the last full backup and the latest differential are needed for a restore. Incremental backups would require all incrementals since the last full, but the scenario uses differential backups.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Last full backup and all differential backups since Sunday
Why it's wrong here
Differential backups are cumulative, so only the most recent one is needed; applying all would be redundant but not harmful, though unnecessary.
- ✗
Last full backup only
Why it's wrong here
A full backup alone would restore data only up to Sunday, losing all changes made on Monday, Tuesday, and Wednesday.
- ✓
Last full backup and the latest differential backup
Why this is correct
This restores the database to the state at the time of the last differential, which includes all changes since Sunday.
- ✗
Last full backup and all incremental backups since Sunday
Why it's wrong here
This would be correct for an incremental strategy, but the scenario uses differential backups, not incremental.
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Last reviewed: Jul 26, 2026
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