ABOUT THE AUTHORS CRYSTAL PANEK, MCP, MCP+I, MCSA, MCSE, MCTS, MCDBA. For many years she trained as a contract instructor teaching at such places as the MicroC, Stellacon Corporation and the University of New Hampshire. She then became the vice-president for a large IT training company and for 15 years she developed training materials and courseware to help 1000's of students get through their certification exams. She currently works on a contract basis creating courseware for several large IT training facilities. ROBB TRACY is a veteran instructional designer and trainer in the e-learning industry. He is President of ACTbrainy,??an ACT test prep e-learning company, and the author of several IT certification books, including CompTIA Linux+/LPIC-1 Certification All-in-One Exam Guide, Second Edition (Exams LX0-103 & LX0-104/101-400 & 102-400).