Which acronym refers to a file-transfer protocol that encrypts authentication information and data in transit?

• A. RSA
• B. ROV
• C. S-FTP
• D. SANS

Answer: (C)

Protecting both login information and the file contents during transfer requires a protocol that provides encryption in transit. S-FTP does exactly that by running over SSH, which encrypts the authentication process and the data being transferred. This means credentials aren’t exposed to eavesdroppers and the files remain confidential as they move between client and server. FTP on its own would send credentials in clear text, so it’s not secure. The other options aren’t file-transfer protocols with encryption: RSA is just a cryptographic algorithm, ROV isn’t related, and SANS is an organization. Therefore, S-FTP is the correct acronym.