The document discusses File Transfer Protocol (FTP) and how it allows users to transfer files between computers. It covers the basic steps of connecting to an FTP server, navigating directories, transferring files, and using both command-line and graphical user interface (GUI) FTP clients like Filezilla and WinSCP. Key points include FTP's client-server model, the use of ASCII and binary transfer modes, basic FTP commands, and how compressed files need decompression before use.