CompTIA Security Plus Mock Test Q140

Which of the following secure file transfer methods uses port 22 by default?

A. FTPS
B. SFTP
C. SSL
D. S/MIME

Correct Answer: B
Section: Network Security

Explanation:
SSH uses TCP port 22. All protocols encrypted by SSH, including SFTP, SHTTP, SCP, SExec, and slogin, also use TCP port 22.

Incorrect Answers:
A: FTPS uses ports 989 and 990.
C: SSL operates over TCP port 443.
D: S/MIME is an Internet standard for encrypting and digitally signing e-mail.

References:
Stewart, James Michael, CompTIA Security+ Review Guide, Sybex, Indianapolis, 2014, pp. 45, 51, 313