Book excerpt: Don't Let the Real Test Be Your First Test! CompTIA A+ Certification Practice Exams, Second Edition (Exams 220-801 & 220-802) is filled with more than 1000 realistic practice questions to prepare you for these challenging exams. To help you understand the material, in-depth explanations of both the correct and incorrect answers are included for every question. This practical guide covers all official objectives for Exams 220-801 and 220-802 and is the perfect companion to CompTIA A+ Certification Study Guide, Eighth Edition. McGraw-Hill is a Gold-Level CompTIA Authorized Partner offering Authorized CompTIA Approved Quality Content. Covers all exam topics, including: Operational Procedures * Operating System Fundamentals * Motherboards and Processors * Storage, Memory, and Adapters * Power Supplies, Display Devices, and Peripherals * Installing and Upgrading PC Components * Installing and Configuring Laptops * Client-Side Virtualization * Upgrading, Installing, and Configuring Windows * Disk and File Management * Troubleshooting, Repair, and Maintenance of PCs * Troubleshooting and Preventive Maintenance for Laptops * Troubleshooting and Preventive Maintenance for Windows * Network Basics * Installing a Small Office/Home Office (SOHO) Network * Troubleshooting Networks * Computer Security Fundamentals * Implementing Digital Security * Configuring and Troubleshooting Windows Clients * Supporting Mobile Devices * Using and Supporting Printers Electronic content includes: Complete MasterExam practice testing engine, featuring Two practice exams Detailed answers with explanations Score Report performance assessment tool With free online registration: Bonus--two downloadable MasterExam practice tests