AWS Certified Cloud Practitioner (CLF-C02) — Question 512

A company needs to store infrequently used data for data archives and long-term backups.

Which AWS service or storage class will meet these requirements MOST cost-effectively?

Answer options

• A. Amazon FSx for Lustre
• B. Amazon Elastic Block Store (Amazon EBS)
• C. Amazon Elastic File System (Amazon EFS)
• D. Amazon S3 Glacier Flexible Retrieval

Correct answer: D

Explanation

Amazon S3 Glacier Flexible Retrieval is optimized for low-cost, long-term archival storage of infrequently accessed data, making it the most cost-effective option. Other services like Amazon EBS, Amazon EFS, and Amazon FSx for Lustre are high-performance block and file storage solutions that would be prohibitively expensive for cold data archiving.