DBS-C01 Monitoring and Troubleshooting Practice Question
A company is running a production Amazon RDS for MySQL DB instance. The application team reports intermittent connection timeouts. The DBA notices that the DB instance's CPU utilization spikes to 100% during these times. Which metric should be monitored to determine if the issue is due to a specific query?
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
✓
Queries (engine-specific counter)
The RDS for MySQL engine-specific counter 'Queries' reflects the number of queries executed. Option A is wrong because DatabaseConnections shows connections, not query performance. Option B is wrong because ReadIOPS measures disk I/O, not query volume. Option C is wrong because NetworkThroughput measures network traffic.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
DatabaseConnections
Why it's wrong here
DatabaseConnections shows the number of client connections, not query execution.
- ✗
NetworkThroughput
Why it's wrong here
NetworkThroughput measures network traffic, not query activity.
- ✗
ReadIOPS
Why it's wrong here
ReadIOPS measures disk read operations, not query count.
- ✓
Queries (engine-specific counter)
Why this is correct
Queries reflects the number of queries executed, helping identify query load spikes.
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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.