About the Contributing Authors
Bob Vachon is a professor in the Computer Systems Technology program at Cambrian College in Sudbury, Ontario, Canada, where he teaches networking infrastructure courses. He has worked and taught in the computer networking and information technology field since 1984. He has collaborated on various CCNA, CCNA Security, CCNP, and IoT projects for the Cisco Networking Academy as team lead, lead author, and subject matter expert. He enjoys playing guitar and being outdoors.
Allan Johnson entered the academic world in 1999 after 10 years as a business owner/operator to dedicate his efforts to his passion for teaching. He holds both an MBA and an M.Ed in training and development. He taught CCNA courses at the high school ...
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