The IT director instructed the systems administrator to build a server to support the accounting department's file growth. The IT director requested that the accounting users have the ability to…

QFS supports advanced file system features including encryption, so it would not prevent users from encrypting their files.

ZFS has native dataset-level encryption built in, so it would not be the cause of an inability to encrypt files.

FAT32 is a legacy file system with no support for file-level encryption, access control lists, or advanced security descriptors. On Windows, the Encrypting File System (EFS) requires NTFS, and on Linux, native encryption via fscrypt requires ext4 or another modern file system. Because the server was formatted with FAT32, the accounting users cannot encrypt files regardless of OS-level settings, as the file system itself cannot store the necessary encryption metadata.

CIFS is a network file-sharing protocol, not a local file system, and the ability to encrypt files depends on the underlying file system on the server, not the sharing protocol.

ext4 supports file-level encryption via fscrypt starting with Linux kernel 4.1, so it would not prevent users from encrypting files.