Data Communication: is the transfer of data or information between a source and a receiver. The source transmits the data and the receiver receives it. (“Data Communication is the exchangeof data (in the form of 0’s and 1’s) between two devices (computers) via some form of the transmission medium.”(Modified Definition)

Data: information that is stored in digital form Information: is defined as knowledge or intelligence Network: is a set of devices interconnected by media links Internet: a global computer network providing a variety of information and communication facilities, consisting of interconnected networks using standardized communication protocols