CompTIA Security Plus Mock Test Q137

Which of the following uses port 22 by default? (Select THREE).

A. SSH
B. SSL
C. TLS
D. SFTP
E. SCP
F. FTPS
G. SMTP
H. SNMP

Correct Answer: A,D,E
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:
B: SSL operates over TCP port 443.
C: TLS can operate over TCP ports 443 and 80.
F: FTPS uses ports 989 and 990.
G: SMTP uses TCP port 25.
H: SNMP makes use of UDP ports 161 and 162.

References:
Stewart, James Michael, CompTIA Security+ Review Guide, Sybex, Indianapolis, 2014, pp. 42, 45, 51
http://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers