AWS Certified Database – Specialty — Question 85

A database specialist was alerted that a production Amazon RDS MariaDB instance with 100 GB of storage was out of space. In response, the database specialist modified the DB instance and added 50 GB of storage capacity. Three hours later, a new alert is generated due to a lack of free space on the same DB instance.
The database specialist decides to modify the instance immediately to increase its storage capacity by 20 GB.
What will happen when the modification is submitted?

Answer options

• A. The request will fail because this storage capacity is too large.
• B. The request will succeed only if the primary instance is in active status.
• C. The request will succeed only if CPU utilization is less than 10%.
• D. The request will fail as the most recent modification was too soon.

Correct answer: D

Explanation

The correct answer is D because Amazon RDS has a modification cooldown period, which prevents frequent changes to storage capacity. Since the previous modification occurred just three hours ago, the system will reject the new request. The other options do not accurately reflect the conditions under which storage modifications are processed in Amazon RDS.