Kevin Wallace, CCIE No. 7945, CCSI, CCVP, CCNP, CCDP, MCSE 4, CNE 4/5, is a full-time instructor for Thomson NETg. With 17 years of Cisco internetworking experience, Kevin has been a network design specialist for The Walt Disney World Resort and a network manager for Eastern Kentucky University. Kevin holds a bachelor of science degree in electrical engineering from the University of Kentucky. Among Kevin's other publication credits are Voice over IP First-Step, CCDA/CCDP Flash Cards and Exam Practice Pack (coauthored with Anthony Sequeira), CCIE Routing and Switching Flash Cards and Exam Practice Pack (coauthored with Anthony Sequeira), and Cisco IP Telephony Flash Cards and Exam Practice Pack,all of which are available from Cisco Press. Additionally, Kevin authored the Cisco Enterprise Voice over Data Design (EVoDD) 3.3 course, was a contributing author for the Cisco IP Telephony Troubleshooting (IPTT) 2.0 course, and has written for Cisco's Packet magazine. Kevin also holds the IP Telephony Design Specialist, IP Telephony Operations Specialist, and IP Telephony Support Specialist CQS certifications.