Basics of Data Communication and Computer Networking

Data Communication and Computer network plays a vital role in network design and management so understanding systems development life cycle Networking engineering is a complicated task which involves software firmware chip level engineering hardware and electric pulses. To ease network engineering the whole networking concept is divided into multiple layers. Each layer is involved in some particular task and is independent of all other layers. But as a whole almost all networking tasks depend on all of these layers. Layers share data between them and they depend on each other only to take input and send output.