Which protocol adds Transport Layer Security to the File Transfer Protocol?

• A. File Transfer Protocol Secure (FTPS)
• B. File Transfer Protocol (FTP)
• C. SSH File Transfer Protocol (SFTP)
• D. Hyper Text Transfer Protocol Secure (HTTPS)

Answer: (A)

Adding Transport Layer Security to the File Transfer Protocol is achieved by using the secure variant of FTP that runs over TLS. This means TLS encrypts both the control channel (the commands you send) and the data channel (the files being transferred), protecting credentials and content from eavesdropping and tampering. TLS can be negotiated explicitly by the client or established automatically, depending on the server configuration, providing confidentiality, integrity, and server authentication. The other options don’t fit because plain FTP has no encryption, SFTP is a different protocol that operates over SSH rather than TLS, and HTTPS is HTTP over TLS used for web traffic, not FTP.