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Ed Liberman (MVP, MCP, MCSA, MCSE, MCDST, MCT, MCTS, MCITP, A+, Network+, Server+, CWTS, CWNA, CWNT) has worked in technology for more than 20 years. He has been certified in and instructing IT topics since 1998 and has helped thousands of people get started in IT or advance their IT careers. When not teaching, he consults independently with corporations seeking to improve their network infrastructure.