In this authoritative resource for telecommunications, networking, the Internet, and information technology there are more than 20,000 terms defined. Plus there is a front section packed full of information. Aside from the information you expect to find, in this 18th updated and expanded edition, you will find three new sections; 119 Best Dollar-Saving Tips, Hot and New in Telecom, and Disaster Planning. Selected as a suggested resource for CAQ(R) Information Technology Networking exam preparation.