CompTIA's Network+ certification is a globally-recognized, vendor neutral exam that has helped over 235,000 IT professionals reach further and higher in their careers. The 2009 Network+ exam (N10-004) is a major update with more focus on security and wireless aspects of networking. Our new study guide has been updated accordingly with focus on network, systems, and WAN security and complete coverage of today's wireless networking standards. As always this companion covers the core Network+ material including basic design principles, management and operation of a network infrastructure, and testing tools. After reading this book not only will you be able to ace the exam but you will be able to maintain, troubleshoot, and install computer networks. New to this edition are: Intensified focus on network security Two NEW practice exams to help eliminate test-day jitters Tiered chapter ending quesitons that allow gradual learning New to this edition in accordance with the newly revised exam is an intensified focus on network securityTwo NEW practice exams to help eliminate test-day jittersTiered chapter ending questions that allow for graduated learningCovers everything from test taking techniques to advanced topics - keeping the beginner and intermediate IT professional in mindLayout of the guide parallels the Network+ N10-004 objectives for ease of study