The OSI model, established by the International Organization for Standardization, is a framework for understanding and designing network architecture that enables communication between different machines without altering hardware or software. It consists of seven layers, each responsible for specific processes related to information transfer across networks, helping to standardize components and reduce resource duplication. The model facilitates communication across various network hardware and software by breaking down the complex process into simpler parts.

1. OSI Model
By
MILIND MISHRA

2. INTRODUCTION
• ISO
International
Standard
Organization
Established in 1947 Multinational body dedicated
to worldwide agreement Standard of international
level Covers all aspects of network
communications
• It is Open System Interconnection MODEL
Allow two different Machines to connect without
change
in
hardware
and
software
It is model for understanding and designing a
network architecture

3. The Model
Layered
framework
Designed
for
communication across all types of computer
system 7 separate but related layer Each
defines segment of process of moving
information across network.

4. Why we need OSI Model
• To allow different types of network hardware
and software to communicate with each other
• Avoidable duplication of equipment resources
• To breaks network communication into
smaller, simpler parts that are easy to develop
• To facilitates standardization of network
components to allow multiple – vendor
development and support

10. Questions ....
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11. Thank you..