AWS Certified Cloud Practitioner — Question 387

An application runs on multiple Amazon EC2 instances that access a shared file system simultaneously.

Which AWS storage service should be used?

Answer options

• A. Amazon EBS
• B. Amazon EFS
• C. Amazon S3
• D. AWS Artifact

Correct answer: B

Explanation

Amazon EFS is designed to provide serverless, fully managed elastic file storage that can be concurrently mounted by multiple Amazon EC2 instances. In contrast, Amazon EBS is block storage typically attached to a single instance, Amazon S3 is object storage rather than a traditional file system, and AWS Artifact is a compliance document portal.