OSI Model

Open System

Interconnection

model

OSI Model

• A conceptual model
• Communicate without regard of their underlying internal structure and technology.
• The model partitions a communication system into abstraction layers.
• The original version of the model defined seven layers.

How it works

The Duty of Each Layer

Ordering A Pizza

Just a visual guide to the OSI model

Application

Presentation

Session

Transport

Network

Datalink

Physical

All People Seem To Need Data Processing