DBS-C01 Monitoring and Troubleshooting Practice Question
A company's Amazon RDS for PostgreSQL instance is experiencing a high number of connections, causing performance degradation. The DBA wants to identify which user and application are creating the most connections. What should the DBA do?
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
✓
Enable Performance Insights and use the 'db.sql_tokenized' dimension to analyze connections by user.
Performance Insights with the 'db.sql_tokenized' dimension allows database administrators to group and analyze database connections by user and application, helping identify the source of high connection counts. Option A (CloudTrail) logs API calls, not database-level logins. Option C (Enhanced Monitoring) provides OS-level metrics like connection count but does not break down by user or application. Option D (VPC Flow Logs) captures network traffic metadata, not database connection details.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable AWS CloudTrail to log database logins.
Why it's wrong here
CloudTrail does not capture database-level login events.
- ✓
Enable Performance Insights and use the 'db.sql_tokenized' dimension to analyze connections by user.
Why this is correct
Performance Insights provides SQL-level performance data, including top users and applications.
- ✗
Enable Enhanced Monitoring and check the 'Connection Count' metric.
Why it's wrong here
Enhanced Monitoring provides OS metrics, not per-user connection details.
- ✗
Enable VPC Flow Logs to track connection attempts.
Why it's wrong here
Flow logs capture network flows, not database user connections.
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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.