Troy McMillan is a Product Developer and Technical Editor for Kaplan IT as well as a full time trainer for Computertraining.com, a training company specializing in career changers. A former career changer himself, he became a professional trainer 5 years ago teaching Cisco, Microsoft, Comptia and Wireless classes. He also served as a contributing Subject Matter Expert for Kaplan's CCNA Cisco Certified Network Associate Certification Exam Preparation Guide. He now creates certification practice tests and study guides for the Transcender and Self-Test brands. Troy lives in Atlanta, Georgia.