why is a networking software has layers list and define the role of each layer of ISO and OSI model
Answers
Actually ISO is international standard organisation... It is a organisation which defined these osi layers...... These layers defines how when a user enters the data in Google in alphabets manner and how that is reached to the server and how a response to our question is achieved..... All the data we enter n we receive what we want should pass through a layers and these layers are OSI layers.....
There are n numbers of users who use computer network and are located over the world. So to ensure, national and worldwide data communication, systems must be developed which are compatible to communicate with each other ISO has developed a standard. ISO stands for International organization of Standardization. This is called a model for Open System Interconnection (OSI) and is commonly known as OSI model.
The ISO-OSI model is a seven layer architecture. It defines seven layers or levels in a complete communication system. They are:
1. Application Layer
2. Presentation Layer
3. Session Layer
4. Transport Layer
5. Network Layer
6. Datalink Layer
7. Physical Layer