DBS-C01 Management and Operations Practice Question
A company has an Amazon RDS for MySQL DB instance that is running low on storage. The current allocated storage is 500 GB, and the free space is down to 10 GB. The database administrator wants to increase storage with minimal downtime. Which action should be taken?
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 the AWS Management Console to modify the DB instance and increase the allocated storage.
RDS supports modifying storage online with minimal downtime. Increasing allocated storage from 500 GB to, for example, 600 GB can be done via a modification to the DB instance. The instance remains available during the modification, though a brief performance impact may occur. Stopping the instance is unnecessary. Creating a snapshot and restoring would cause longer downtime. Waiting for autoscaling might not be quick enough if space is critically low.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Use the AWS Management Console to modify the DB instance and increase the allocated storage.
Why this is correct
Modifying storage is an online operation with minimal impact.
- ✗
Stop the DB instance, modify the allocated storage, and start the instance.
Why it's wrong here
Stopping the instance causes downtime; modification can be done without stopping.
- ✗
Create a snapshot of the current DB instance, restore it to a new larger instance, and point the application to the new endpoint.
Why it's wrong here
This causes more downtime and complexity.
- ✗
Enable storage autoscaling and wait for the automatic increase.
Why it's wrong here
Autoscaling is reactive and may not trigger immediately; manual increase is quicker.
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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.