A+ Common Network Ports and Protocol Numbers Quiz

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| Attempts: 13 | Questions: 20 | Updated: Aug 12, 2026
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1. What port number does HTTP use by default?

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About This Quiz
A+ Common Network Ports and Protocol Numbers Quiz - Quiz

This quiz assesses your knowledge of common network ports, protocol numbers, and their associated services in TCP\/IP networking. You'll test your understanding of well-known ports (0\u20131023), registered ports, and the protocols that operate on them. Mastering these fundamentals is essential for network troubleshooting, security configuration, and IT support roles.

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2. HTTPS operates on port ____.

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3. NTP (Network Time Protocol) uses port ____.

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4. DHCP server listens on port ____.

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5. Which port is used by POP3 for retrieving email?

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6. RDP (Remote Desktop Protocol) typically operates on port ____.

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7. What port does FTP use for file transfer?

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8. Which port does HTTPS use for secure web browsing?

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9. What is the protocol number for IPv6 encapsulation (IP-in-IP)?

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10. SMB (Server Message Block) file sharing uses port ____.

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11. Which port does LDAP use for directory services?

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12. What is the protocol number for ICMP?

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13. SNMP is used for network monitoring and uses port ____.

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14. Telnet operates on port ____.

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15. IMAP email service typically uses port ____.

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16. What port does DNS use to resolve domain names?

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17. SMTP is used for sending email and operates on port ____.

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18. Which protocol number is assigned to UDP?

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19. What port does SSH use for secure remote access?

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20. Which protocol number is assigned to TCP?

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What port number does HTTP use by default?
HTTPS operates on port ____.
NTP (Network Time Protocol) uses port ____.
DHCP server listens on port ____.
Which port is used by POP3 for retrieving email?
RDP (Remote Desktop Protocol) typically operates on port ____.
What port does FTP use for file transfer?
Which port does HTTPS use for secure web browsing?
What is the protocol number for IPv6 encapsulation (IP-in-IP)?
SMB (Server Message Block) file sharing uses port ____.
Which port does LDAP use for directory services?
What is the protocol number for ICMP?
SNMP is used for network monitoring and uses port ____.
Telnet operates on port ____.
IMAP email service typically uses port ____.
What port does DNS use to resolve domain names?
SMTP is used for sending email and operates on port ____.
Which protocol number is assigned to UDP?
What port does SSH use for secure remote access?
Which protocol number is assigned to TCP?
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