CompTIA Security+ Question K-42

A network administrator is asked to send a large file containing PII to a business associate.
Which of the following protocols is the BEST choice to use?

A. SSH
B. SFTP
C. SMTP
D. FTP

Answer: B

Explanation:
SFTP encrypts authentication and data traffic between the client and server by making use of SSH to provide secure FTP communications. As a result, SFTP offers protection for both the authentication traffic and the data transfer taking place between a client and server.