Cisco's CCIE certification is today's most lucrative, sought-after networking credential: the gold standard for networking professionals. In Cisco Certification, Second Edition, world-class CCIE instuctor and consultant, Bruce Caslow focuses on the most challenging aspect of the CCIE exam process: the hands-on labs. This bestseller has been fully updated to reflect Cisco's latest technologies and exam objectives, with new coverage of VoIP, IP multicast, and many other key topics. Bruce Caslow focuses on providing in-depth, advanced explanations of Cisco network configuration and troubleshooting -- not just Q&As. This new edition adds extensive coverage of Quality of Service, IP multicast, and voice traffic routing, including Voice Over IP, Voice Over ATM, Voice Over Frame Relay. It also delivers expanded coverage of two key protocols: BGP for connecting internal networks to Internet Service Providers; and OSPF for internal enterprise internetworking. It includes even more lab exercises, "Can You Spot the Issues" challenges, test-taking strategies and day-to-day guidance for problem resolution.