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:
Application Layer, Presentation Layer, Session Layer, Transport Layer, Network Layer, Data link Layer, Physical Layer.
ATM (Asynchronous Transmission Mode) communicates with cells rather than transmitting frames. ATM cells can be encapsulated in other protocols.Read More
The process of reducing data by applying a compression technique is called compression, and the resulting data is called compressed data. The reverse process is decommission.Read More
In the present days, wireless communication system has become an essential part of various types of wireless, many devices used wireless communication.Read More