data communication

Let’s get familiar with data communication. I studied data communication in my 5 semester. There I realized, studying data communication was easy, its concepts were simple enough to understand, just a pinch of time was invested in learning any one of its concept. I studied topics like signals, kinds of transmission, data transfer modes, multiplexing techniques, switching techniques, and media used. We will have a look at all of these concepts.

Data communication is a fast growing technology. If you are a student learning data communication these days I am sure this is the right place for you. We study a five layer Internet model (at some places four layers are considered). To understand the functions of any layer and protocols used, of either a seven layer OSI model or a five layer TCP model, understanding data communication concepts lay a very good platform to stand bold as a master of it.

Data communication gives us a better understanding of lower layers in any network model. It is concerned with how a physical connection is established. It covers all methods, techniques to establish these connections. We come across various technologies right from past to till date used to transfer information over the network. 

Topics which are discussed include:
1. Analog and digital signals