Acknowledgments

I would like to offer a big thank-you to Christine for her help and understanding during the long hours that a book project entails. I also want to thank my parents. A special thanks to the people of Pearson IT Certification, who helped make this project a reality.—Michael Gregg

I would like to thank Ellie Bru for her professional support in making this book happen and her keen ability to keep up with my never-ending travel schedule. She has the rare ability to track me down anywhere in the world to keep my edits on course. Thank you! I also thank Michelle and the team at Pearson IT Certification for the opportunity to make this book possible and the belief in its important contribution.—Rob Johnson