- OSI Means Open System Interconnection.
- OSI is a reference model.
- This is The Image that explains overall OSI Model
- OSI has 7 layers. Each layer has it's own functions.
- All layers are dependent on each other.
- If you are sender then first layer is Application Layer.
- If you are receiver then first layer is Physical Layer.
Hope You Understand The Basic Concept Of OSI Model. Let's Meet On Day 4 With TCP/IP Model.