Recommended Study Resources
Use the CCDA DESGN 640-864 Official Certification Guide. Like all Cisco Press Certification Guides, in addition to explaining the technology, this book also offers many other tools to help with exam prep, including planning review tables, notations of the most important topics in each chapter, and a CD question bank with exam software.
The Cisco Learning Network is a portal for exam information, updates, and content regarding exams.
The Cisco Design Zone is a repository for the most current design guides for Cisco solutions. Design guides are comprehensive resources for design concepts, considerations, and solutions.