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.