What is exactly OSI Model?

• What is exactly OSI Model? 

Ans : OSI is known as 'Open System Interconnection'. OSI is an reference model developed by the international organization for standardization. 

• How many layers does OSI model consists?

Ans : OSI Model consists of 7 layers. The layers are known as follows:

• Physical layer
• Data link layer
• Network layer
• Transport layer
• Session layer
• Presentation layer
• Application layer

• What are OSI Model services?

Ans : OSI model is used as a standard for communication between systems. More importantly, OSI model does not specify protocols used for networking purpose. Each layer has its own set of functions to be performed in networking.

This is about OSI (Open System Interconnection) model used as a reference model in computer networking. In the further tutorial we will discuss the different layers of OSI Model and their respective functions.

• OSI Model Images:

OSI MODEL & ITS LAYER

OSI MODEL & ITS LAYER

OSI MODEL & ITS LAYER

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