The OSI Model ***

OSI Model Layers

7. Application 6. Presentation 5. Session 4. Transport 3. Network 2. Data Link 1. Physical Mnemonic: Please Do Not Throw Sausage Pizza Away (Bottom to top)

Prupose of the Reference Model

Categorize functions of the network into particular layer(s) Compare technologies across different manufacturers By understanding each layers' functions you can understand how best to communicate with that device

Data Types in the OSI Model (Memorize)

Data- Application, Presentation, and Session layers (5-7) Segment- Transport layer (4) Packets- Network layer (3) Frames- Data Link layer (2) Bits- Physical layer (1) Mnemonic device: Don't Some People Forget Birthdays (Top to bottom)

What is the mnemonic device to help remember Data Types in the OSI Model?

Don't Some People Forget Birthdays

OSI Model

Open Systems Interconnection Developed in 1977 Developed by International Organization for Standardization (ISO) Referred to as OSI Model or OSI Stack Consists of 7 layers Useful in troubleshooting networks Serves as a reference model in networks

What is the mnemonic to help remember all 7 layers of the OSI Model

Please Do Not Throw Sausage Pizza Away