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 has an MBA and an M.Ed in occupational training and develop ment. Allan is currently pursuing an MS in information security. He is an information technology instruc tor at Mary Carroll High School and Del Mar College in Corpus Christi, Texas. Since 2003, Allan has committed much of his time and energy to the CCNA Instructional Support Team providing services for instructors worldwide and creating training materials. He is a familiar voice on the Cisco Networking Academy Community forum, "Ask the Experts" series. He currently holds CCNA and CCAI certifications.