What is OSI Model?

The OSI (Open Systems Interconnection) model is a conceptual framework used to understand and standardize the functions of a telecommunication or networking system.

Some Important Points about OSI Model:

– Developed by ISO (International Organization for Standardization.

– It divides the communication process into seven distinct layers.

– OSI Model is a conceptual framework (no Physical Implementation)

– Designed to understand networking deeply

– Developed and implemented in 1978-1984

– Different Vendors could able to communicate after the implementation of OSI Model.

Role of OSI Model in vendor independent networking:

Before OSI Model, different Vendors could not able to communicate because of hardware and software compatibility

After Implementation of OSI model, different Vendors could able to communicate because of standardization of networking.

7 Layes of Interconnection

It divides the communication process into seven distinct layers, each responsible for specific functions related to data transmission and network communication.

1. Application Layer

2. Presentation Layer

3. Session Layer

4. Transport Layer

5. Network Layer

6. Data Link Layer

7. Physical Layer