Quentin Docter (Loveland, OH), A+, MCSE, CNE, CCNA, SCSA, has spent more than 17 years in the IT field. His experience includes technician, network administrator, consultant, trainer, author, and web developer. He is presently an IT consultant and well-respected author. Jon Buhagiar (Pittsburg, PA), A+, Network+, CCNA, MCSA, MCSE, BS/ITM, is Supervisor of Network Operations at Pittsburgh Technical College. In addition to teaching, he has been creating course content for the past 17 years. Some of his more recent work can be found on Youtube http://www.youtube.com/networkedminds. Jeff T. Parke(Nova Scotia, Canada), CISSP, CompTIA Project+, CySA+, is a certified technical trainer and consultant specializing in governance, risk management and compliance. Jeff's infosec roots began as a security engineer, a member of a HP consulting group in Boston, USA. Prior to becoming an author, Jeff was a Global IT Risk Manager residing for several years in Prague, Czech Republic, where he rolled out a new risk management strategy for a multinational logistics firm. Troy McMillan (Pfafftown, NC) holds more than 30 IT certifications including A+ and Network+. He is a Product Developer and Technical Editor for Kaplan IT, who help individuals and organizations train on technology and prepare for technology certifications. Troy is also a full-time trainer, teaching CompTIA, Cisco, Microsoft, and Wireless classes. He authored CompTIA A+ Complete Review Guide: Exam 220-901 and Exam 220-902, Third Edition, from Sybex.