Book excerpt: Publisher's Note: Products purchased from Third Party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entitlements included with the product. 140+ Hands-On, Step-by-Step Labs, Fully Updated for the Core 1 and Core 2 Exams This practical workbook contains more than 140 labs that challenge you to solve real-world problems by applying key concepts. Thoroughly revised for the 220-1001 and 200-1002 exam objectives, this book maps directly to Mike Meyers’ CompTIA A+® Guide to Managing and Troubleshooting PCs, Sixth Edition. You will get complete materials lists, setup instructions, and start-to-finish lab scenarios. “Hint” and “Warning” icons guide you through tricky situations, and post-lab questions measure your knowledge. This manual covers: Hardware and OS Troubleshooting Professional Behavior Windows 7/8.1/10 Configuration and Maintenance macOS and Linux Configuration and Maintenance CPUs and RAM BIOS and UEFI Firmware Motherboards, Expansion Cards, and Ports Power Supplies and Mass Storage PC Assembly and Configuration Users, Groups, and Permissions Display Technologies Local Area and Wi-Fi Networking The Internet, Computer Security, and more