Frank Derfler and Les Freed are a proven networking best-selling combination. In addition to authoring the wildly successful How Networks Work, Fourth Edition, Millennium Edition and Sixth Editions they also wrote Get a Grip on Network Cabling, a success for Ziff Davis Press and still being used in many college and technical school classrooms as the course book for cabling classes. Frank is a Senior Networking Editor and Les is a Contributing Editor at PC Magazine, where they review the latest networking products and technology for the world's largest computer magazine.