Home/Study Guides/CCNA Routing & Switching 200-120/Chapter 1 - Understanding Networks and their Building Blocks/1-3 OSI Reference Model.
The Open System Interconnection (OSI) protocol suite is comprised of numerous standard protocols that are based on the OSI reference model. These protocols are part of an international program to develop data-networking protocols and other standards that facilitate multivendor...
This white paper will provide you with an understanding of each of the seven layers, including their functions and their relationships to each other.
OSI model was developed in 1984. It divides data transmission process in seven layers. Each layer has its own functions and protocols.
OSI Model Layer Functions Transport Layer Header Fields Network Layer Header Fields.
How should a student (or professional for that matter) understand the relationship between the OSI model and protocols he/she works with?
Each DoD layer and its functions corresponds to 1 or more OSI layers and their functions, which is represented in the image below
Different Layers and their functions are described below.
This system was developed because it appeared that IBM was going to patent the design of their SNA networks so that no one else could use IBM's design model for networking.
Each layer of the OSI model has its own unique functions. The process of sending data is typically started at the Application layer, is sent through