AWS Certified SysOps Administrator – Associate (legacy) — Question 80

A SysOps Administrator must evaluate storage solutions to replace a company's current user-shared drives infrastructure. Any solution must support security controls that enable Portable Operating System Interface (POSIX) permissions and Network File System protocols. Additionally, any solution must be accessible from multiple Amazon EC2 instances and on-premises servers connected to the Amazon VPC.
Which AWS service meets the user drive requirements?

Answer options

• A. Amazon S3
• B. Amazon EFS
• C. Amazon EBS
• D. Amazon SQS

Correct answer: B

Explanation

Amazon EFS is the correct choice because it supports POSIX permissions and Network File System protocols, allowing for shared access across multiple EC2 instances and on-premises servers. Amazon S3, while a storage solution, does not support POSIX permissions or NFS protocols. Amazon EBS is primarily for block storage and not designed for shared access, and Amazon SQS is a messaging service, not a storage solution.