Offers a tutorial on telecommunications that covers the basic concepts, types, techniques, and protocols of data communications. Current scenarios for computer communications networks, their connectivity to global telecommunication environments, and global online retrieval services are discussed. Ten data communication networks and seven online…

In contemporary society, information technologies and communication technologies (ICTs) are playing crucial role in dissemination of knowledge and information the world over. Universities/ higher education institutions, particularly distance education universities in developed countries are making best use of these technologies for effective and…