The Open System Interconnection Reference Model (OSI Reference Model or
OSI Model) is an abstract description for layered communications and
computer network protocol design. It was developed as part of the Open
Systems Interconnection (OSI) initiative. In its most basic form, it
divides network architecture into seven layers which, from top to
bottom, are the Application, Presentation, Session, Transport, Network,
Data-Link, and Physical Layers. It is therefore often referred to as the
OSI Seven Layer Model.
Visual Understanding Of OSI Reference Model
7 Layer Architecture:
A key "Statement" to remember the arrangement of OSI Layered Architecture:
"ALL PEOPLE SEEMS TO NEED DATA PROCESSING "
7) Application Layer
6) Presentation Layer
5) Session Layer
4) Transport Layer
3) Network Layer
2) Data Link Layer
1) Physical Layer
