Add More Acronyms and Fix Numbering Layer was flipped

[Little-Karl]

Please Do Not Trust Sales Persons' Advice. This one should be the easiest one to remember

A Penguin Said That Nobody Drinks Pepsi Kinda cute

Fix Acronym Layer Numbering Yes Application is Layer7 and Physical is Layer1, the world would be dead if Application is 1 and Physical is 7 TCP/IP is a whole different story and if you know OSI you know TCP/IP automatically, and CCNA requires OSI so...