IT · Professional · Professional Certifications

Common Ports and Protocols

Well-known port numbers and what protocols such as FTP, SSH, SMTP, RDP, LDAP and SNMP do, TCP versus UDP use.

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44 mixed cards for Professional IT. It opens with "What protocol uses port 22?" and "What protocol uses port 21?". Study it alongside the other Professional sets below.

44 cards · mixed cards · AI-written, checked twice. Edit anything.

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What protocol uses port 22?: Show answer
SSH
What protocol uses port 21?: Show answer
FTP
What protocol uses port 25?: Show answer
SMTP
What protocol uses port 80?: Show answer
HTTP
What protocol uses port 443?: Show answer
HTTPS
What protocol uses port 53?: Show answer
DNS
What protocol uses port 110?: Show answer
POP3
What protocol uses port 143?: Show answer
IMAP
What protocol uses port 23?: Show answer
Telnet
What protocol uses port 3306?: Show answer
MySQL
What protocol uses port 3389?: Show answer
RDP
What protocol uses port 389?: Show answer
LDAP
What protocol uses port 161?: Show answer
SNMP
What protocol uses port 69?: Show answer
TFTP
What protocol uses port 123?: Show answer
NTP

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Common Ports and Protocols

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