Q17 — AWS SOA-C02 Ch.1

Question 17 of 100 | ← Chapter 1

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?

• 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. Delete the EFS file share. Create an Amazon FSx for Windows File Server file share for the EC2 instances.

Explanation

Amazon Elastic File System (EFS) 基于 NFS 协议，主要用于 Linux 环境，而 Windows 系统默认不支持 NFS 客户端功能。《AWS 官方文档》明确指出，EFS 不兼容 Windows EC2 实例的本地文件共享需求。选项 A 提到的 Amazon FSx for Windows File Server 是 AWS 专为 Windows 设计的文件存储服务，原生支持 SMB 协议，能够无缝集成 Windows 实例的文件共享需求。选项 C 和 D 涉及 NFS 配置，但 Windows 系统对 NFS 的支持需要额外组件且非标准解决方案。选项 B 的 IAM 验证与文件系统挂载无直接关联。