Here's the book you need to prepare for CompTIA's Security+ exam. This updated edition of the best-selling "Security+ Study Guide" was developed to meet the exacting requirements of today's certification candidates and aspiring IT security professionals. In addition to the consistent and accessible instructional approach that has earned Sybex the "Best Study Guide" selection in the 2003 CertCities Readers Choice Awards, this book provides: clear and concise information on crucial security topics; practical examples and insights drawn from real-world experience; and leading-edge exam preparation software, including a test engine and electronic flashcards. You'll also find authoritative coverage of key exam topics, including: General Security Concepts, Communication Security Infrastructure, Security Basics of Cryptography, Operational and Organizational Security, and Look to Sybex - for the knowledge and skills needed to succeed in today's competitive IT marketplace. This book has been reviewed and approved as CompTIA Authorized Quality Curriculum (CAQC). Students derive a number of important study advantages with CAQC materials, including coverage of all exam objectives, implementation of important instructional design principles, and instructional reviews that help students assess their learning comprehension and readiness for the exam.