The correct answer is to enable the slow query log and monitor it in CloudWatch Logs, alongside using Amazon RDS Performance Insights. Enabling the slow query log captures every SQL statement that exceeds a defined execution time, allowing you to review the raw queries directly, while Performance Insights visualizes database load and breaks down the most time-consuming queries by wait events and SQL text, giving you immediate visibility into performance bottlenecks without additional overhead. On the AWS Certified Database Specialty DBS-C01 exam, this pairing tests your understanding of both passive logging and active monitoring—a common trap is choosing only one option, such as relying solely on the slow query log without the real-time analysis that Performance Insights provides. To identify slow queries in RDS MySQL effectively, remember that logs give you the raw data, but Performance Insights shows you the impact. Memory tip: "Logs list the slow, but Insights show the load."
DBS-C01 Monitoring and Troubleshooting Practice Question
This DBS-C01 practice question tests your understanding of monitoring and troubleshooting. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 is experiencing slow query performance on an Amazon RDS for MySQL database. The DBA wants to identify the most time-consuming queries. Which TWO actions should the DBA take? (Choose two.)
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.
Amazon RDS Performance Insights (Option D) provides a database performance tuning and monitoring feature that visualizes database load and identifies the most time-consuming queries by breaking down wait events, SQL statements, and hosts. It directly helps the DBA pinpoint the specific queries causing performance degradation without additional configuration or overhead.
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 the audit log.
Why it's wrong here
Audit log is for compliance, not performance.
✗
Enable the general log and review it.
Why it's wrong here
General log records all queries, not just slow ones.
✗
Use Amazon RDS Enhanced Monitoring.
Why it's wrong here
Enhanced Monitoring shows OS metrics, not query details.
✓
Use Amazon RDS Performance Insights.
Why this is correct
Performance Insights identifies top SQL by load.
Related concept
Read the scenario before looking for a memorised answer.
✓
Enable the slow query log and monitor it in CloudWatch Logs.
Why this is correct
Slow query log captures queries that exceed a certain time.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse general logging (Option B) with slow query logging, or assume Enhanced Monitoring (Option C) provides query-level insights, when in fact only Performance Insights and the slow query log directly identify the most time-consuming queries.
Trap categories for this question
Command / output trap
Enhanced Monitoring shows OS metrics, not query details.
Detailed technical explanation
How to think about this question
The slow query log (Option E) captures queries that exceed the long_query_time threshold (default 10 seconds), and when integrated with CloudWatch Logs, it enables automated monitoring and alerting for slow queries. Performance Insights leverages the database engine's internal wait event instrumentation (e.g., MySQL's performance_schema) to provide a real-time dashboard of database load, allowing drill-down into specific queries, users, and sessions causing contention.
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.
TExam Day Tips
→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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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: Use Amazon RDS Performance Insights. — Amazon RDS Performance Insights (Option D) provides a database performance tuning and monitoring feature that visualizes database load and identifies the most time-consuming queries by breaking down wait events, SQL statements, and hosts. It directly helps the DBA pinpoint the specific queries causing performance degradation without additional configuration or overhead.
What should I do if I get this DBS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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This DBS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DBS-C01 exam.
Question Discussion
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