Match the port number or numbers to the protocol. (Not all options

Match the port number or numbers to the protocol. (Not all options are used.)

Explanation & Hint:

FTP (File Transfer Protocol) typically uses ports 20 and 21. Port 21 is for control (commands) and port 20 for data transfer.
HTTP (Hypertext Transfer Protocol) uses port 80 for standard web traffic.
HTTPS (HTTP Secure) uses port 443 for secure web traffic, which is encrypted using SSL/TLS.
RDP (Remote Desktop Protocol) uses port 3389 for remote desktop connections.