About the Author: Daniel Minoli has many years' experience providing telecommunications, networking, and IT architecture guidance and solutions for such organizations as the Advanced Research Projects Agency (ARPA), Bell Telephone Laboratories, ITT, Prudential Securities, Bell Communications Research (Bellcore/Telcordia), AT&T, Capital One Financial, SES Americom, New York University, Rutgers University, Stevens Institute of Technology, and Société Générale de Financement de Québec. An author of numerous core references on information technology, telecommunications, and data communications, he has also written columns for Computerworld, Network World, and Network Computing.