Get ready for Cisco's new Building Scalable Cisco Internetworks exam (#640-901) with the CCNP/CCIP: BSCI Study Guide. This book provides you with the knowledge, skills, and expert insights you'll need to approach the exam with confidence. You'll find in-depth coverage of all exam objectives, hundreds of challenging review questions, electronic flashcards, and a searchable electronic version of the entire book. The BSCI recently replaced the Routing exam as a core requirement for the CCNP (Cisco Certified Networking Professional) certification, and is also a core requirement for the CCIP (Cisco Certified Internetworking Professional) certification. The BSCI exam covers Cisco key technologies related to using Cisco routers connected in LANs and WANs typically found at medium to large network sites.