AWS Certified Database – Specialty — Question 139

A company is using Amazon Neptune as the graph database for one of its products. The company's data science team accidentally created large amounts of temporary information during an ETL process. The Neptune DB cluster automatically increased the storage space to accommodate the new data, but the data science team deleted the unused information.
What should a database specialist do to avoid unnecessary charges for the unused cluster volume space?

Answer options

• A. Take a snapshot of the cluster volume. Restore the snapshot in another cluster with a smaller volume size.
• B. Use the AWS CLI to turn on automatic resizing of the cluster volume.
• C. Export the cluster data into a new Neptune DB cluster.
• D. Add a Neptune read replica to the cluster. Promote this replica as a new primary DB instance. Reset the storage space of the cluster.

Correct answer: C

Explanation

The correct answer is C because exporting the data to a new Neptune DB cluster will allow the company to start with a fresh volume size that reflects only the required data, thus preventing unnecessary charges for unused space. The other options either do not address the issue of unused volume space effectively or involve unnecessary complexity without directly resolving the storage cost issue.