what are SMB telnet FTP NFS SMTP MYSQL

SMB: Server Message Block, a protocol used for sharing files, printers, and other resources between computers on a network.

Telnet: A network protocol used to provide a command-line interface to a remote computer.

FTP: File Transfer Protocol, a standard network protocol used for transferring files from one host to another over a TCP-based network.

NFS: Network File System, a protocol used for sharing files over a network.

SMTP: Simple Mail Transfer Protocol, a protocol used for sending and receiving email messages.

MySQL: An open-source relational database management system used for storing and retrieving data