The bestselling full-color computer repair textbookfully updated for the 2012 revision to CompTIA A+ certification exam 220-802 Mike Meyers' CompTIA A+ Guide to Managing and Troubleshooting Operating Systems, Fourth Editionis the most effective classroom-based test preparation package available for schools, praised by many for its conversational style and real-world applicability. The full-color textbook design is well illustrated with photographs and diagrams, and has an interactive design. Chapter learning objectives cover the 2012 objectives for CompTIA A+ exam 220-802, and a map with page references is included. The book features sidebar questions, critical skill-building activities, step-by-step instruction, and end-of-chapter review and assessment. The student CD-ROM provides a self-assessment engine with two complete practice exams, an "Introduction to A+" video by Mike Meyers, more than one hour of LearnKey video presentation featuring Mike Meyers, and tools and utilities to use in labs or on the job.