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Greg Tomsho

Greg Tomsho is director of the Computer Networking/Cybersecurity Department and Cisco Academy at Yavapai College in Prescott, Arizona. He has earned the CCNA, MCTS, MCSA, A+, Network+, Security+, Server+ and Linux+ certifications. A former software engineer, technical support manager and IT director, he has more than 30 years of computer and networking experience. He is the author of numerous other leading books, including GUIDE TO NETWORKING ESSENTIALS, MCSA GUIDE TO INSTALLATION, STORAGE, AND...See more