The answer is Amazon RDS Performance Insights, as it is the only tool that provides per-query CPU breakdown for a MySQL database. When CPU utilization is high but IOPS and memory are normal, the bottleneck is likely inefficient SQL queries rather than resource contention, and Performance Insights directly surfaces the top SQL statements consuming CPU cycles. On the AWS Certified Database Specialty DBS-C01 exam, this question tests your ability to differentiate between monitoring tools: Enhanced Monitoring shows OS-level metrics like process list and disk I/O, but not query-level CPU usage, while CloudTrail and RDS Events track API calls and operational notifications, respectively. A common trap is confusing Enhanced Monitoring with query analysis, so remember that Performance Insights is the go-to for database-specific performance tuning. Memory tip: “Performance Insights pinpoints the query pain” — if the CPU is high and the database is the suspect, look at the SQL, not the OS.
DBS-C01 Management and Operations Practice Question
This DBS-C01 practice question tests your understanding of management and operations. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 is troubleshooting a performance issue on an Amazon RDS for MySQL DB instance. The CPU utilization is consistently above 90%, but the IOPS and memory metrics are well within limits. Which tool should the specialist use to 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
✓
Use Amazon RDS Performance Insights to identify the top SQL queries by CPU usage.
Option A is correct. Performance Insights can show the queries that are consuming the most CPU. Option B is wrong because Enhanced Monitoring is for OS-level metrics, not per-query CPU usage. Option C is wrong because RDS Events are for operational events. Option D is wrong because CloudTrail is for API calls.
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.
✗
Enable AWS CloudTrail to log database queries.
Why it's wrong here
CloudTrail logs API calls, not SQL queries.
✗
Use Amazon RDS Enhanced Monitoring to view OS-level metrics.
Why it's wrong here
Enhanced Monitoring does not show per-query CPU usage.
✗
Check RDS events in the AWS Management Console.
Why it's wrong here
RDS events do not provide performance details.
✓
Use Amazon RDS Performance Insights to identify the top SQL queries by CPU usage.
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.
Trap categories for this question
Command / output trap
Enhanced Monitoring does not show per-query CPU usage.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
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.
Management and Operations — This question tests Management and Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Amazon RDS Performance Insights to identify the top SQL queries by CPU usage. — Option A is correct. Performance Insights can show the queries that are consuming the most CPU. Option B is wrong because Enhanced Monitoring is for OS-level metrics, not per-query CPU usage. Option C is wrong because RDS Events are for operational events. Option D is wrong because CloudTrail is for API calls.
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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