his popular book presents the fundamental concepts of data communications, networking, distributed applications, and network management and security; it relates specifically to the business environment and business management and staff. Up-to-date coverage of key issues—LANs, WANs, high-speed networks, asychronous transfer mode (ATM) and TCP/IP, and the use of the Internet, intranets, and extranets support business objectives. For information systems managers, telecommunications managers, product marketing personnel, and system support specialists.