Port exam questions & answers 2024/2025
Well Known (Common) Ports - ANSWERS0-1023
FTP - ANSWERSTCP/UDP 20(data) and TCP 21(control)
File Transfer Protocol
SSH - ANSWERSTCP/UDP 22
Secure Shell
Telnet - ANSWERSTCP/UDP 23
SMTP - ANSWERSTCP 25
Simple Mail Transfer Protocol
DNS - ANSWERSTCP/UDP 53
Domain Name System
DHCP - ANSWERSUDP 67(IPv4 client) and UDP 68(IPv4 server); TCP/UDP 546(IPv6 client) and TCP/UDP 547(IPv6 server) Dynamic Host Configuration Protocol
TFTP - ANSWERSUDP 69
Trivial File Transfer Protocol
HTTP - ANSWERSTCP 80
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