AWS Certified SysOps Administrator – Associate — Question 293

A SysOps administrator has many Windows Amazon EC2 instances that need to share a file system between nodes. The SysOps administrator creates an Amazon Elastic File System (Amazon EFS) file share. After creation of the file share, the SysOps administrator is having trouble mounting the file share to the EC2 instances.

Which action should the SysOps administrator take so that the EC2 instances can share the files?

Answer options

• A. Delete the EFS file share. Create an Amazon FSx for Windows File Server file share for the EC2 instances.
• B. Use the correct IAM credentials to mount the EFS file share.
• C. Configure NFSv4 support on the Windows operating system that is running on the EC2 instances.
• D. Allow the correct port for NFS through the security group and network ACL.

Correct answer: A

Explanation

Amazon EFS is natively designed for Linux-based workloads and does not officially support Windows EC2 instances. To share files among Windows instances, Amazon FSx for Windows File Server should be used as it natively supports the SMB protocol. Modifying NFS configurations, security groups, or IAM credentials will not resolve the underlying compatibility issue between Windows and EFS.