Take charge of your career with certification that can increase your marketability. This new edition of the top-selling Guide is what you need to prepare for CompTIA's Security+ SY0-101 exam. Developed to meet the exacting requirements of today's certification candidates and aspiring IT security professionals, this fully updated, comprehensive book features: Clear and concise information on crucial security topics. Practical examples and hands-on labs to prepare you for actual on-the-job situations. Authoritative coverage of all key exam topics including general security concepts; communication, infrastructure, operational, and organizational security; and cryptography basics. The Guide covers all exam objectives, demonstrates implementation of important instructional design principles, and provides instructional reviews to help you assess your readiness for the exam. Additionally, the Guide includes a CD-ROM with advanced testing software, all chapter review questions, and bonus exams as well as electronic flashcards that run on your PC, Pocket PC, or Palm handheld. Join the more than 20,000 security professionals who have earned this certification with the CompTIA authorized Study Guide.