This is a gift from LycanWolfe on reddit/r/CompTIA. Used with permission.
I struggled memorizing these and hope these tricks I used to get them to actually stay in my brain rather than memory dump after tests help you as well :). Try making your own mnemonics as I feel the process of making ways to remember helps it stick much faster and you’ll always remember the funny way you linked things up.
File Transfer Protocol – FTP: 20-21. “Date at 20? I was Full Time Partier until I turned 21 and got some self Control.” 20=Data 21=Control. A bit long winded but it works.
Secure Shell – SSH: 22 looks like two “S”s.
Telnet: 23. Tell ’em Micheal Jordan (jersey number 23) hits nothing but net.
Simple Mail Transfer Protocol – SMTP: 25. She Mailed Twenty-five Packages.
Domain Name System – DNS: 53. Dad! No Salt! You’re 53! (sorry folks).
Dynamic Host Configuration Protocol – DHCP: 67(server), 68(client) Downtown Has Cheese Pizza where 67th Street and 68th Cross.
Hypertext Transfer Protocol – HTTP: 80. Hold The Phone, I’ve seen a ghost. (80 is the ghost face).
Hypertext Transfer Protocol Secure – HTTPS: 443. Think 4×4 safe and 3 is the key. Securing the safe.
Internet Mail Access Protocol – IMAP: 143. Internet Made A P(pen pineapple pen song). Turn the numbers into letters and MAKE a P out of the 1. M=3, 4=A, 1=P. The Mnemonic helps to remind you you’re making Letters from similar shaped numbers.
Remote Desktop Protocol – RDP: 3389 Remote Dog Protocol. This one is just a play on words. Visual imagery really helps this one stick in your head. 33 sounds like REE. The 89 looks like a dogs eyes and nose to me. Picture your dog getting the remote for you.
However, if you want a mnemonic phrase for the laser printing process, just remember:
People Can Eat Donuts To Feel Content.
Remembering NTP is as easy as 123