Emmett Dulaney - CompTIA A+ Complete Review Guide: Exams 220-801 and 220-802

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Dear Reader,

Thank you for choosing CompTIA A+ Complete Review Guide, Second Edition . This book is part of a family of premium-quality Sybex books, all of which are written by outstanding authors who combine practical experience with a gift for teaching.

Sybex was founded in 1976. More than 30 years later, were still committed to producing consistently exceptional books. With each of our titles, were working hard to set a new standard for the industry. From the paper we print on, to the authors we work with, our goal is to bring you the best books available.

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For Jim and Linda: thank you for always being there.

Emmett Dulaney

For my dear father, who has always supported me no matter what.

Troy McMillan

There are a great many people without whom this book would not be possible. Among them is Jeff Kellum, who does his job as an acquisitions editor extremely well and pulls you along with him. Thanks must also go to Faithe Wempen and David Groth for their work on earlier editions of this book.

Emmett Dulaney

Special thanks go out to Jeff Kellum as always, and to Robin Abernathy, who did an incredible job on the technical edit. I also would like thank Dick Margulis, the development editor, who ensured that we kept everything on track and met our deadlines. Finally, thanks to Emmett, who was a pleasure to work with.

Troy McMillan

Emmett Dulaney holds or has held 18 vendor certifications and is the author of over 30 books. An associate professor at Anderson University, he is the former director of training for Mercury Technical Solutions. He specializes in certification and cross-platform integration, and is a columnist for CertCities and Campus Technology. Emmett can be reached at .

Troy McMillan writes practice tests and study guides for Kaplan Cert Prep, while also running his own training and consulting company. Holding over 30 industry certifications in Cisco, CompTIA, Microsoft, and wireless technologies, Troy is also a Cisco Certified trainer, MCT, and author of a number of books on technology-related subjects. Troy can be reached at .

The A+ certification program was developed by the Computing Technology Industry Association (CompTIA) to provide an industry-wide means of certifying the competency of computer service technicians. The A+ certification, which is granted to those who have attained the level of knowledge and troubleshooting skills that are needed to provide capable support in the field of personal computers, is similar to other certifications in the computer industry. The theory behind these certifications is that if you needed to have service performed on any of their products, you would sooner call a technician who has been certified in one of the appropriate programs than you would just call the first so-called expert in the phone book.