DBS-C01 Monitoring and Troubleshooting Practice Question
An administrator is troubleshooting an Amazon RDS for PostgreSQL instance that is experiencing high CPU utilization. The administrator has enabled Performance Insights. Which metric should be examined first to identify the queries consuming the most CPU?
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
✓
db.load.avg
The correct metric to examine first is 'db.load.avg' (Option C). In Amazon RDS Performance Insights, 'db.load.avg' represents the average number of active sessions, which directly correlates with CPU utilization. A high value indicates queries that are consuming significant CPU resources. Option A ('db.sessions') is not a standard Performance Insights metric. Option B ('db.cpu.avg') does not exist in Performance Insights. Option D ('db.bytes_sent') is a network metric unrelated to CPU usage.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
db.sessions
Why it's wrong here
This is not a Performance Insights metric.
- ✗
db.cpu.avg
Why it's wrong here
This is not a standard Performance Insights metric.
- ✓
db.load.avg
Why this is correct
This metric shows the average number of active sessions and is key for identifying high-load queries.
- ✗
db.bytes_sent
Why it's wrong here
This is a metric for network throughput, not CPU.
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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.