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Jim Doherty is currently the director of strategic marketing with Symbol Technologies. Prior to joining Symbol, Jim worked at Cisco Systems, where he led marketing campaigns for IP Telephony, and routing and switching. Over the past several years, he has taught professionals in both academic and industry settings on a broad range of topics, including networking, electric circuits, statistics, and wireless communication methods. Jim is the co-author of Cisco Networking Simplified and wrote the Study Notes section of the Cisco CCNA Exam #640-607 Flash Card Practice Kit. Jim holds a BS in electrical engineering from N.C. State University and an MBA from Duke University. Jim also served in the United States Marine Corps, where he earned the rank of Sergeant, before leaving to pursue an education.