Appendix A: Memory Aids

OSI Model

Please	Do	Not	Throw	Sausage	Pizza	Away
Physical Layer	Data Link Layer	Network Layer	Transport Layer	Session Layer	Presentation Layer	Application Layer

Please	Do	Not	Touch	Steve's	Pet	Alligator
Physical Layer	Data Link Layer	Network Layer	Transport Layer	Session Layer	Presentation Layer	Application Layer

Puff	Daddy	Needs	To	Stop	Producing	Albums
Physical Layer	Data Link Layer	Network Layer	Transport Layer	Session Layer	Presentation Layer	Application Layer

Pew	Dead	Ninja	Turtles	Smell	Particularly	Awful
Physical Layer	Data Link Layer	Network Layer	Transport Layer	Session Layer	Presentation Layer	Application Layer

Princess	Di	Never	Tried	Screwing	Prince	Andrew
Physical Layer	Data Link Layer	Network Layer	Transport Layer	Session Layer	Presentation Layer	Application Layer

A	Priest	Saw	Two	Nuns	Doing	Push-ups
Application Layer	Presentation Layer	Session Layer	Transport Layer	Network Layer	Data Link Layer	Physical Layer

All	People	Seem	To	Need	Data	Processing
Application Layer	Presentation Layer	Session Layer	Transport Layer	Network Layer	Data Link Layer	Physical Layer

All	People	Should	Try	New	Diet	Pepsi
Application Layer	Presentation Layer	Session Layer	Transport Layer	Network Layer	Data Link Layer	Physical Layer