Comptia Security Plus Mock Test Q113

FTP/S uses which of the following TCP ports by default?

A. 20 and 21
B. 139 and 445
C. 443 and 22
D. 989 and 990

Correct Answer: D
Section: Network Security

Explanation
FTPS uses ports 989 and 990.

Incorrect Answers:
A: FTP makes use of ports 20 and 21.

B: Port 139 is used by NetBIOS, and port 445 is used by Microsoft-DS.

C: Port 443 is used by HTTPS, and port 22 is used by SSH and SCP.

References:
Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, 6th Edition, Sybex, Indianapolis, 2014, pp. 81-83
http://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers