DBS-C01 Monitoring and Troubleshooting Practice Question
An Amazon RDS for MySQL instance is running out of storage. Which TWO actions can be taken to resolve this issue without downtime?
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 storage auto scaling to automatically add storage.
Amazon RDS for MySQL supports modifying storage to increase allocated storage without downtime (option C). You can also enable storage auto scaling to automatically increase storage when thresholds are met (option A). Deleting unnecessary data (option B) might free space but is not a reliable proactive measure and could involve manual effort. Taking a snapshot and restoring to a larger instance (option D) requires downtime. Converting to Amazon Aurora (option E) is a migration process, not a direct fix for running out of storage.
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 to automatically add storage.
Why this is correct
Auto scaling adds storage when needed without manual intervention.
- ✗
Delete unnecessary data from the instance.
Why it's wrong here
Deleting data may free space but does not prevent future issues and may require downtime if tables need to be rebuilt.
- ✓
Modify the DB instance to increase allocated storage.
Why this is correct
RDS allows dynamic storage increase without downtime for most engines.
- ✗
Take a snapshot and restore to a larger instance.
Why it's wrong here
Restoring from snapshot involves downtime.
- ✗
Convert the instance to Amazon Aurora.
Why it's wrong here
Migration to Aurora is a significant change and may involve downtime.
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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.