Which of the following TCP ports are used by FTP? (Select TWO).
A.
20
B.
21
C.
22
D.
23
E.
25
F.
80
Explanation:
FTP uses two ports by default: 21 for sending commands, and 20 for sending data. For instance if
you said “FTP <ServerName>” it would make the attempt using port 21. If the session was
established, port 20 would be using for the data. NotE. These are the default ports which is what I
assume you were asking. A server administrator can however configure FTP to use whatever port
he defines.