A technician needs to set up a Windows file server. Which of the following methods best achieves this goal?

NFS (Network File System) is a distributed file system protocol primarily used in Unix and Linux environments, and while Windows can be configured to use it, it's not its native or preferred file-sharing method.

SFTP (SSH File Transfer Protocol) is used for secure file transfer over an SSH connection, typically for transferring individual files, not for providing a persistent network file share like CIFS.

SCP (Secure Copy Protocol) is a network protocol that supports file transfers between hosts on a network, using SSH. Similar to SFTP, it's for file transfers, not for general network file share access.

CIFS (Common Internet File System) is the primary network file-sharing protocol used by Windows operating systems, often referred to as SMB (Server Message Block). It provides native support for features like user authentication, file locking, and share permissions, making it the most suitable and integrated solution for a Windows file server.