DBS-C01 Monitoring and Troubleshooting Practice Question
A developer notices that an Amazon RDS for PostgreSQL DB instance is running low on free storage space. The instance has 100 GB of allocated storage. What is the recommended first step to troubleshoot this issue?
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
✓
Check for unused indexes or table bloat using pg_repack or similar tools
Checking for unused indexes or bloat is a typical starting point for storage issues. Option A is wrong because enabling storage auto scaling is a preventive measure, not a troubleshooting step. Option B is wrong because modifying storage is a solution, not a troubleshooting step. Option D is wrong because deleting transaction logs may not recover significant space and can affect point-in-time recovery.
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 storage auto scaling
Why it's wrong here
Auto scaling prevents future issues but does not troubleshoot the current low storage.
- ✗
Modify the DB instance to increase allocated storage
Why it's wrong here
This is a resolution, not a troubleshooting step.
- ✓
Check for unused indexes or table bloat using pg_repack or similar tools
Why this is correct
Index bloat and table bloat are common causes of storage consumption.
- ✗
Delete the oldest transaction logs
Why it's wrong here
Logs are managed automatically; deleting them may not free significant space.
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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.