What two things must you have in order to use FTP?

A. E-mail client and FTP client

B. E-mail client and server

C. Files and server

D. FTP client and server

In order to use the file transfer protocol, you need to first have an FTP server, and then an FTP client who accesses that server. The FTP server is what stores all of the directory trees, and manages connections between it and each client. The FTP client is what is used to interface with the FTP server, examples of this being Cyberduck and FileZilla.