DBS-C01 Performance Insights Practice Question
A database specialist is troubleshooting an Amazon RDS for SQL Server instance that is experiencing high CPU utilization. The instance has multiple databases. Which TWO actions should the specialist take to identify the cause?
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 top SQL queries
Options B and E are correct because Performance Insights helps identify top SQL queries causing high CPU, and Enhanced Monitoring provides OS-level metrics (like CPU utilization per database process) to pinpoint the source. Option A is wrong: read replicas offload read traffic but do not diagnose CPU issues. Option C is wrong: increasing instance size is a remediation, not a diagnostic step. Option D is wrong: changing to a burstable instance class is also a remediation, not diagnostic.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Create a read replica to offload read traffic
Why it's wrong here
Read replicas don't reduce writer CPU.
- ✓
Use Performance Insights to identify top SQL queries
Why this is correct
Performance Insights shows top queries by CPU.
- ✗
Increase the instance size to handle the load
Why it's wrong here
Scaling up is a reaction, not a diagnostic step.
- ✗
Modify the DB instance class to a burstable type
Why it's wrong here
Changing class is a fix, not diagnosis.
- ✓
Enable Enhanced Monitoring to view OS-level metrics
Why this is correct
Enhanced Monitoring shows per-process CPU usage.
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