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Christopher A. Crayton is an author, technical editor, technical consultant, security consultant, trainer and SkillsUSA state-level technology competition judge. Formerly he worked as a computer and networking instructor at Keiser College (2001 Teacher of the Year); as network administrator for Protocol, a global electronic customer relationship management (eCRM) company; and at Eastman Kodak Headquarters as a computer and network specialist. Chris has authored several print and online books, including The A+ Exams Guide, Second Edition (Cengage Learning, 2008), Microsoft Windows Vista 70-620 Exam Guide Short Cut (O'Reilly, 2007), CompTIA A+ Essentials 220-601 Exam Guide Short Cut (O'Reilly, 2007), The A+ Exams Guide, The A+ Certification and PC Repair Handbook (Charles River Media, 2005), and The Security+ Exam Guide (Charles River Media, 2003) and A+ Adaptive Exams (Charles River Media, 2002). He is also co-author of How to Cheat at Securing Your Network (Syngress, 2007). As an experienced technical editor, Chris has provided many technical edits/reviews for several major publishing companies, including Pearson Education, McGraw-Hill, Cengage Learning, Wiley, O'Reilly, Syngress, and Apress. He holds MCSE, A+ and Network+ certifications.