DBS-C01 Monitoring and Troubleshooting Practice Question
A company is running a production Amazon Aurora MySQL database. The database performance has degraded over the past week. The DBA suspects an increase in lock waits. Which tool should be used to identify queries experiencing lock waits?
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
✓
Amazon RDS Performance Insights
Amazon RDS Performance Insights provides a database load visualization and detailed wait event analysis, allowing you to identify queries experiencing lock waits. Option A is incorrect because CloudWatch Logs captures log streams but does not directly show lock wait events. Option B is incorrect because Enhanced Monitoring provides OS-level metrics (CPU, memory, disk I/O) but not database-specific lock waits. Option D is incorrect because AWS Trusted Advisor offers best-practice recommendations but does not monitor real-time database performance or lock waits.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Amazon CloudWatch Logs
Why it's wrong here
CloudWatch Logs doesn't provide lock wait details.
- ✗
Amazon RDS Enhanced Monitoring
Why it's wrong here
Enhanced Monitoring provides OS-level metrics.
- ✓
Amazon RDS Performance Insights
Why this is correct
Performance Insights shows wait events like lock waits.
- ✗
AWS Trusted Advisor
Why it's wrong here
Trusted Advisor provides recommendations, not lock wait details.
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JA
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.