CCIE R&S ExamFOCUS Study Notes & Review Questions for the written exam 2015 Edition

The new CCIE R&S written exam 400-101 requires that you know routing, switching, LAN, WAN, voice, IPv4 and IPv6. It is a highly comprehensive exam. To succeed in this exam, you need to read as many reference books as possible. There is no single book that can cover everything! The book is NOT intended to guide you through every single official topic. You should therefore use this book together with other reference books for the best possible preparation outcome.