Well-Known TCP/UDP Ports Quiz

Which port is used by the HTTP protocol?

• 80

• 443

• 21

• 22

What is the function of port 22?

• SMTP

• Telnet

• Secure Shell (SSH)

• FTP data transfer

Which protocol uses port 25?

• HTTP

• FTP

• DNS

• SMTP

Port 53 is associated with which service?

• HTTP

• SSH

• DNS

• Telnet

What is the purpose of port 443?

• SMTP

• HTTPS

• FTP

• HTTP

Which port is used for the Telnet protocol?

• 80

• 443

• 23

• 110

Port 110 is used by which protocol?

• SMTP

• HTTP

• IMAP

• POP3

Which port is used for the DNS service?

• 22

• 25

• 80

• 53

What is the function of port 21?

• SMTP

• FTP control

• SSH

• Telnet

Which port is used by the IMAP4 protocol?

• 110

• 25

• 143

• 80