The correct answer is to scale up the DB instance to a larger instance class with more memory. This is because the FreeableMemory metric on Amazon RDS represents the amount of unused memory available to the operating system and database engine; when it consistently drops below 200 MB, the instance is under memory pressure, forcing the OS to rely on paging or swapping, which directly degrades SQL Server performance. On the AWS Certified Database Specialty DBS-C01 exam, this scenario tests your understanding of RDS memory management and the distinction between scaling up (vertical scaling) versus scaling out or modifying non-resource configurations. A common trap is to consider disabling logs or changing maintenance windows, but those actions do not address the root cause of insufficient RAM. Remember the memory mantra: “Low freeable memory means the instance is hungry—feed it more RAM by scaling up.”
DBS-C01 Monitoring and Troubleshooting Practice Question
This DBS-C01 practice question tests your understanding of monitoring and troubleshooting. Compare every option against the stated constraints before choosing — the best answer satisfies all requirements, not just the most obvious one. 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 database administrator is monitoring an Amazon RDS for SQL Server DB instance and notices that the FreeableMemory metric is consistently below 200 MB. Which of the following actions is most appropriate to mitigate performance issues?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Scale up the DB instance to a larger instance class with more memory
Option B is correct because low freeable memory can cause performance degradation; increasing allocated memory (by scaling up) helps. Option A is wrong because enabling automatic backups does not affect memory. Option C is wrong because modifying the maintenance window does not help. Option D is wrong because disabling logging is not a standard practice.
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.
✗
Modify the DB instance's maintenance window to off-peak hours
Why it's wrong here
Maintenance window does not address memory pressure.
✗
Disable the SQL Server Agent and error logging
Why it's wrong here
Disabling services is not recommended and may not free significant memory.
✗
Enable automatic backups with a shorter retention period
Why it's wrong here
Backups do not affect memory.
✓
Scale up the DB instance to a larger instance class with more memory
Why this is correct
More memory increases the freeable memory available to the database engine.
Related concept
Read the scenario before looking for a memorised answer.
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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
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: Scale up the DB instance to a larger instance class with more memory — Option B is correct because low freeable memory can cause performance degradation; increasing allocated memory (by scaling up) helps. Option A is wrong because enabling automatic backups does not affect memory. Option C is wrong because modifying the maintenance window does not help. Option D is wrong because disabling logging is not a standard practice.
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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