DBS-C01 Management and Operations Practice Question
An Amazon RDS for MySQL DB instance has a high number of connections and the application is experiencing slow response times. The database administrator wants to identify the queries that are causing the most load. Which approach is most effective?
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
✓
Enable Amazon RDS Performance Insights and review the top SQL queries
Performance Insights provides a dashboard to identify top queries by load. Option A is wrong because it shows connections, not query performance. Option B is wrong because CloudWatch logs show slow queries but not in real-time. Option D is wrong because RDS events show instance events, not query load.
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 slow query logs and analyze them in CloudWatch Logs
Why it's wrong here
This helps but is not real-time and requires manual analysis.
- ✗
Monitor the DatabaseConnections metric in CloudWatch
Why it's wrong here
This shows number of connections, not query performance.
- ✓
Enable Amazon RDS Performance Insights and review the top SQL queries
Why this is correct
Performance Insights provides real-time and historical analysis of database load and top queries.
- ✗
Check RDS events for any error messages
Why it's wrong here
Events do not provide query performance details.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.