Ports & Protocols Quiz: Do You Know All the Numbers?

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Quizzes Created: 7097 | Total Attempts: 80,150
| Questions: 20 | Updated: Jul 1, 2026
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1. NTP (Network Time Protocol) synchronizes clocks using port ____.

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About This Quiz
Ports & Protocols Quiz: Do You Know All The Numbers? - Quiz

Test your knowledge of network ports and protocols essential for CompTIA Network+ certification. This quiz covers common TCP\/UDP ports, protocol functions, and their real-world applications. Master the numbers and functions behind SSH, HTTP, DNS, SMTP, and other critical protocols used in modern networking. Ideal for IT professionals preparing for certification... see moreor refreshing core networking concepts. Key focus: Ports & Protocols (Network+). see less

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2. HTTP/2 and HTTP/3 can use port ____ in addition to traditional HTTP ports.

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3. Which statement about TCP port 443 is true?

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4. SQL Server database traffic uses port ____.

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5. SMTP for submission (MSA) with TLS/SSL typically operates on port ____.

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6. VNC (Virtual Network Computing) typically uses port ____.

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7. Which port is used by RDP (Remote Desktop Protocol)?

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8. Telnet operates on port ____, but it is considered insecure due to unencrypted transmission.

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9. LDAP (Lightweight Directory Access Protocol) uses port 389. What port does LDAPS (secure LDAP) use?

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10. TFTP (Trivial File Transfer Protocol) operates on port ____.

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11. Which port does HTTP traffic use by default?

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12. What port does SNMP (Simple Network Management Protocol) use by default?

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13. DHCP server listens on port ____ for client requests.

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14. FTP (File Transfer Protocol) uses port 20 for data transfer. What port is used for control commands?

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15. IMAP4 email access operates on port ____.

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16. Which protocol and port are used for POP3 email retrieval?

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17. SMTP (Simple Mail Transfer Protocol) uses port ____.

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18. DNS queries typically use which port and transport protocol?

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19. SSH (Secure Shell) operates on which port?

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20. What is the standard port for HTTPS secure web traffic?

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NTP (Network Time Protocol) synchronizes clocks using port ____.
HTTP/2 and HTTP/3 can use port ____ in addition to traditional HTTP...
Which statement about TCP port 443 is true?
SQL Server database traffic uses port ____.
SMTP for submission (MSA) with TLS/SSL typically operates on port...
VNC (Virtual Network Computing) typically uses port ____.
Which port is used by RDP (Remote Desktop Protocol)?
Telnet operates on port ____, but it is considered insecure due to...
LDAP (Lightweight Directory Access Protocol) uses port 389. What port...
TFTP (Trivial File Transfer Protocol) operates on port ____.
Which port does HTTP traffic use by default?
What port does SNMP (Simple Network Management Protocol) use by...
DHCP server listens on port ____ for client requests.
FTP (File Transfer Protocol) uses port 20 for data transfer. What port...
IMAP4 email access operates on port ____.
Which protocol and port are used for POP3 email retrieval?
SMTP (Simple Mail Transfer Protocol) uses port ____.
DNS queries typically use which port and transport protocol?
SSH (Secure Shell) operates on which port?
What is the standard port for HTTPS secure web traffic?
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