Data Communication & Computer Network

  Data Communication Overview A system of interconnected computers and computerized peripherals such as printers is called computer network. This interconnection among computers facilitates information sharing among them. Computers may connect to each other by either wired or wireless media. Classification of Computer Networks Computer networks are classified based on various factors.They includes: Geographical span Inter-connectivity Administration Architecture Geographical Span Geographically a network can be seen in one of the following categories: It may be spanned across your table, among Bluetooth enabled devices,. Ranging not more than few meters. It may be spanned across a whole building, including intermediate devices to connect all floors. It may be spanned across a whole city. It may be spanned across multiple cities or provinces. It may be one network covering whole world. Inter-Connectivity Components of a network can be connected to each other differently in some fashion.