This is Cisco's official, comprehensive self-study resource for the new DESGN exam, required for CCDA certification. Designed for beginning-to-intermediate level readers, it covers every objective concisely and logically, with extensive teaching features that promote retention and understanding. Readers will find: Pre-chapter quizzes to assess knowledge upfront and focus study more efficiently Foundation topics sections that explain concepts and configurations, and link theory to actual configuration commands Key topics sections calling attention to every figure, table, and list that candidates must know Exam Preparation sections with additional chapter review features Final preparation chapter providing tools and a complete final study plan Customizable practice test library on CD-ROM This book's comprehensive coverage includes: Network design methodology and models Designing enterprise campuses, enterprise data centers, and wireless LANs IPv4, IPv6, Interior Routing Protocols, BGP, and route manipulation Network security technology and design This edition's 40% new coverage includes all-new chapters on designing the enterprise data center, and on final exam preparation. New topics include: Webex, auditing tools, borderless networks, Enterprise Campus 3.0, CAPWAP, 802.11n, scalability, Cisco 500 Series Mobility Express, VPN using public networks, enterprise route redistribution, risk calculation, Ironport, and more.