Topics covered will be more profound than the introductory-level book other similar topics, and will span the layer 2 technology such as switching, STP, etherchannel, and trunking, all the way to security topics such as application layer inspection firewall and intrusion prevention systems. A comprehensive coverage of topics such as how the convergence of voice, video and wireless network traffic affects, and what can be done to improve such as QoS and queuing effects. This book is a key component for every IT professionals preparing for CCNP certification them, because it includes in-depth topics that are tested in the four CCNP exams: Building Scalable Cisco internetworks (642-901) Building Cisco Multilayer Switched Networks (642-812) Implementing Secure Converged Wide Area Networks (642-825) Cisco Optimizing Converged Networks (642-485) CD includes exclusive Sybex Test Engine, with two CCNP practice exam, and the author of the code file. Note: CD-ROM/DVD and other additional materials not included as part of eBook file.