Cisco CCNA Exam #640-507 Certification Guide 
Wendell Odom
Cisco Systems
A comprehensive tool for preparing for the CCNA #640-507 exam.  Coverage of exam topics ensures you a complete understanding of the exam. The guide follows a logical organization of the exam objectives.  Material is presented in a concise manner, focusing on increasing retention and recall of exam topics.  Organize your exam preparation through the use of consistent features in these chapters.  Pre-Chapter quizzes help determine depth of study for each chapter; Foundation topics section cover the technology behind the exam objectives that candidate must know; Foundation Review sections provide concise tables and lists for those who need only review the objectives in a given chapter; Chapter-Ending Quizzes test retention of the chapter topics; and Scenario-based excercises to help you think about exam objectives in real-world situations, thus increasing your recall during exam time.