Question 1,045 of 1,663
DBS-C01 Monitoring and Troubleshooting Practice Question
A database specialist is monitoring an Amazon RDS for MySQL instance and notices that the 'CPUUtilization' metric is consistently above 90%. Which TWO actions should the specialist take to investigate the issue? (Select TWO.)
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
✓
Use Performance Insights to identify the queries that are consuming the most CPU.
Performance Insights identifies the queries that are consuming the most CPU, helping to locate the source of high CPU utilization. Option E is correct because Enhanced Monitoring provides OS-level metrics (e.g., CPU, memory, disk I/O) that help investigate the issue. Option A is incorrect because disabling the query cache does not help investigate CPU usage; it may even increase CPU load temporarily. Option C is incorrect because increasing the instance class is a remediation step, not an investigation action. Option D is incorrect because Multi-AZ does not distribute read load to a standby instance; the standby is only for failover, not for load distribution.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Disable the MySQL query cache to free up CPU.
Why it's wrong here
Disabling query cache is not a diagnostic step.
- ✓
Use Performance Insights to identify the queries that are consuming the most CPU.
Why this is correct
Performance Insights shows top queries by load.
- ✗
Increase the instance class to provide more CPU resources.
Why it's wrong here
This is a remediation, not an investigation.
- ✗
Enable Multi-AZ to distribute the load to a standby instance.
Why it's wrong here
Multi-AZ does not help with CPU investigation.
- ✓
Enable Enhanced Monitoring to get OS-level metrics for the RDS instance.
Why this is correct
Enhanced Monitoring provides detailed OS metrics.
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Last reviewed: Jun 20, 2026
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