ICT : ICT (information and communications technology - or technologies) is an umbrella term that includes any communication device or application, encompassing: radio, television, cellular phones, computer and network hardware and software, satellite systems and so on, as well as the various services and applications associated with them, such as video conferencing and distance learning.

Computer network: A computer network is a system in which computers are connected to share information and resources. The connection can be done as peer-to-peer or client/server.