Which NAS protocol pair is commonly used for network storage?

• A. FTP and HTTP
• B. CIFS and NFS
• C. SMTP and POP3
• D. SSH and Telnet

Answer: (B)

Networking for NAS relies on file-sharing protocols that let clients access remote directories as if they were local. CIFS (Common Internet File System), often associated with SMB, and NFS (Network File System) are the standard file-sharing protocols used for this purpose. CIFS/SMB serves Windows environments, while NFS is common in Unix/Linux systems. A NAS device typically supports both so clients across different operating systems can mount remote file systems, read, and write files transparently.

The other options aren’t about shared file systems: FTP and HTTP are general file transfer methods, not continual mounting of a remote filesystem; SMTP and POP3 are email protocols; SSH and Telnet provide remote command-line access rather than file-sharing services.