Bestselling CompTIA A+ author Mike Meyers provides hands-on, step-by-step labs—updated for the 2012 release of Exam 220-802—so you can practice the IT skills essential for your successMike Meyers’ CompTIA A+ Guide to Managing and Troubleshooting Operating Systems Lab Manual, Fourth Edition contains more than 80 labs that challenge you to solve real-world problems with key concepts.