Question 179 of 144
SK0-005 server-administration Practice Question
A SQL Server database administrator wants to backup a large database (500 GB) with minimal impact on transaction log growth and recovery time. Which TWO backup strategies should the administrator implement? (Choose two.)
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
✓
Perform weekly full backups
Options A and D are correct. A: A full backup copies the entire database, and is needed as a base. D: Transaction log backups control log growth and allow point-in-time recovery. Option B is wrong because differential backups depend on a recent full backup. Option C is wrong because copy-only backups do not affect the log sequence, but they don't control log growth. Option E is wrong because tail-log backups are taken just before disaster recovery, not regularly.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Perform a tail-log backup before each full backup
Why it's wrong here
Tail-log backups are used for point-in-time recovery after a failure, not as a regular strategy to manage log growth.
- ✓
Perform weekly full backups
Why this is correct
Full backups provide a complete copy of the database and are required as a base for differential and log backups.
- ✓
Perform transaction log backups every 15 minutes
Why this is correct
Frequent log backups truncate the transaction log, preventing it from growing too large, and enable point-in-time recovery.
- ✗
Perform daily differential backups
Why it's wrong here
Differential backups reduce time but still require a full backup; they don't control log growth.
- ✗
Perform hourly copy-only backups
Why it's wrong here
Copy-only backups do not truncate the transaction log, so they do not help manage log growth.
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Last reviewed: Jul 26, 2026
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