What does the CIFS protocol allow?

The Common Internet File System (CIFS) protocol is specifically designed for network file sharing. It allows programs to read and write to files and to request services from server programs in a computer network. Essentially, CIFS is an implementation of the Server Message Block (SMB) protocol which enables users to access files on remote servers as if they were local files, facilitating operations such as file transfer, file sharing, and directory access over the network.

With CIFS, users can access shared folders and files from distant computers seamlessly. This capability is crucial for collaborative environments where multiple users require access to the same resources while retaining the ability to read from and write to those files securely and efficiently. This makes the answer regarding file reading and writing over a network correct, as it captures the essence of what CIFS protocol is designed to achieve in network communication and resource accessibility.

In contrast, other choices do not accurately reflect the primary function of CIFS. Storage management on local devices pertains more to filesystem management and does not involve network protocols. Backups of local filesystems and remote administration of Linux servers involve different tools and methods that do not directly relate to CIFS capabilities, reinforcing the focus on network file access as the sole purpose of the protocol.