The fourth edition of the popular and authoritative text Data Communications Network Device examine the characteristics, operation and application of devices used to build data communications networks. Features include: * Wide coverage of the basic concepts of data communications * New sections on ATM / broadband, network LAN / WAN switches and new examples of network integration devices * Checking special devices such as security devices, LZW compression and voice digitizers * Discusses different types of networks, network architecture and data flow between multiple networks * Questions at the end of each chapter to aid understanding. More than a comprehensive reference book, Data Communication Network Devices is ideal as a study guide, too.