- A
Performance Insights
Performance Insights provides database load and wait events per query.
- B
Amazon S3 access logs
Why wrong: S3 access logs are unrelated to RDS memory.
- C
AWS CloudTrail
Why wrong: CloudTrail records API calls, not database performance.
- D
CloudWatch Logs
Why wrong: CloudWatch Logs collect database logs, not memory usage per query.
Question 654 of 1,730
DBS-C01 Monitoring and Troubleshooting Practice Question
This DBS-C01 practice question tests your understanding of monitoring and troubleshooting. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 specialist notices that an RDS MySQL instance's FreeableMemory metric is consistently below 100 MB. Which monitoring tool should be used to identify the queries consuming the most memory?
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
✓
Performance Insights
Option A is correct because Performance Insights provides detailed query-level performance metrics, including memory consumption per query, which helps identify the queries consuming the most memory on an RDS MySQL instance. Option B is incorrect because Amazon S3 access logs record requests made to S3 buckets, not RDS memory usage. Option C is incorrect because AWS CloudTrail logs API calls for auditing, not database memory. Option D is incorrect because CloudWatch Logs can store logs but do not provide query-level memory analysis.
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.
- ✓
Performance Insights
Why this is correct
Performance Insights provides database load and wait events per query.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Amazon S3 access logs
Why it's wrong here
S3 access logs are unrelated to RDS memory.
- ✗
AWS CloudTrail
Why it's wrong here
CloudTrail records API calls, not database performance.
- ✗
CloudWatch Logs
Why it's wrong here
CloudWatch Logs collect database logs, not memory usage per query.
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.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
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.
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Monitoring and Troubleshooting — study guide chapter
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FAQ
Questions learners often ask
What does this DBS-C01 question test?
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: Performance Insights — Option A is correct because Performance Insights provides detailed query-level performance metrics, including memory consumption per query, which helps identify the queries consuming the most memory on an RDS MySQL instance. Option B is incorrect because Amazon S3 access logs record requests made to S3 buckets, not RDS memory usage. Option C is incorrect because AWS CloudTrail logs API calls for auditing, not database memory. Option D is incorrect because CloudWatch Logs can store logs but do not provide query-level memory analysis.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jun 20, 2026
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