Which of the following protocols uses two different network ports?

Which of the following protocols uses two different network ports?

Which of the following protocols uses two different network ports?

A.
NTP

B.
FTP

C.
Rsh

D.
HTTP

E.
Telnet

Explanation:
FTP is odd in the fact that it uses two ports to accomplish its task. It typically uses port 20 (active, or dynamic ports for passive FTP) for data transfer and port 21 to listen to commands.



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