The answer is to monitor FreeStorageSpace and BinaryLogUsage metrics. This is correct because on an RDS for SQL Server instance using General Purpose SSD (gp2) storage, transaction log files (captured by BinaryLogUsage) can grow uncontrollably due to long-running transactions or insufficient log backups, consuming the allocated disk space that FreeStorageSpace tracks. On the AWS Certified Database Specialty DBS-C01 exam, this scenario tests your understanding that RDS disk space issues often stem from transaction log bloat rather than data file growth, and a common trap is confusing backup storage (which is separate and billed differently) with instance storage. Enhanced Monitoring shows OS-level metrics like CPU and memory, not database-specific disk consumption, while CloudTrail only records API calls. A useful memory tip: think of the transaction log as a “binary diary” that must be regularly archived—if it’s not, it will eat your FreeStorageSpace alive.
DBS-C01 Monitoring and Troubleshooting Practice Question
This DBS-C01 practice question tests your understanding of monitoring and troubleshooting. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company's RDS for SQL Server instance is frequently running out of disk space. The instance uses General Purpose SSD (gp2) storage. Which monitoring step will help identify the root cause?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Monitor FreeStorageSpace and BinaryLogUsage metrics
Option D is correct because monitoring FreeStorageSpace and transaction log usage reveals what consumes space. Option A is wrong because backup storage is separate. Option B is wrong because Enhanced Monitoring shows OS metrics, not disk usage by database. Option C is wrong because CloudTrail is for API activity.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Review CloudTrail logs for API calls
Why it's wrong here
CloudTrail does not track storage usage.
✓
Monitor FreeStorageSpace and BinaryLogUsage metrics
Read the scenario before looking for a memorised answer.
✗
Monitor BackupStorageUsed metric
Why it's wrong here
BackupStorageUsed is for automated backups, not instance storage.
✗
Enable Enhanced Monitoring
Why it's wrong here
Enhanced Monitoring provides OS-level metrics but not database file sizes.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Identify which DBS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Monitoring and Troubleshooting — This question tests Monitoring and Troubleshooting — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Monitor FreeStorageSpace and BinaryLogUsage metrics — Option D is correct because monitoring FreeStorageSpace and transaction log usage reveals what consumes space. Option A is wrong because backup storage is separate. Option B is wrong because Enhanced Monitoring shows OS metrics, not disk usage by database. Option C is wrong because CloudTrail is for API activity.
What should I do if I get this DBS-C01 question wrong?
Identify which DBS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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