Frank Derfler and Les Freed are a proven networking best selling combination. Their biggest success came with How Networks Work. Their previous network cabling book, Get a Grip On Network Cabling, was a sleeper success for Ziff Davis Press and is still used in many classroom teaching settings as the coursebook for cabling classes even though it was published 6 years ago and has been out of print for 2 years. Frank is also Senior Networking Editor for the industry leading PC Magazine. Les also works at PC Magazine as a Contributing Editor.