Content Authors

Kevin Wallace

Kevin a Cisco Certified Systems Instructor (CCSI No. 20061) with two CCIEs (#7945), one in Route/Switch and one in Collaboration. He also holds multiple Cisco professional and associate-level certifications in the Route/Switch, Collaboration, Security, Design, and Data Center tracks.

With Cisco experience dating back to 1989, Kevin has been a Network Design Specialist for the Walt Disney World Resort, an instructor of Cisco courses for Skillsoft, and a Network Manager for Eastern Kentucky University.

Currently, Kevin produces video courses and writes books for Cisco Press/Pearson IT Certification. Also, he owns and operates Kevin Wallace Training, LLC, a provider of self-paced training materials that simplify computer networking. Kevin holds a Bachelor of Science degree in Electrical Engineering from the University of Kentucky, and he lives in central Kentucky with his wife (Vivian) and two daughters (Sabrina and Stacie).

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Wendell Odom

Wendell first entered the world of TCP/IP back in 1990, when TCP/IP began to replace proprietary protocols in corporate networks, supporting IBM's new TCP/IP products, routers, and LAN products while still at IBM. He moved away from IBM into the Cisco world by the mid 90's, teaching many different Cisco authorized courses for Cisco training partners, including courses on routing, switching, SNA, ATM, MPLS, WAN switching, load balancing, and QoS. He passed the CCIE R/S lab in 1995.

Wendell has worked alongside Cisco Press, a publishing alliance between Cisco Systems® (NASDAQ: CSCO) and the Pearson Education division of Pearson plc (NYSE: PSO).Over the years, he has written books from the entry-level CCENT through CCIE, books for the Cisco Networking Academy, general networking technology books, textbooks, plus other learning products. He's written all editions of the best-selling CCENT and CCNA R/S Cert Guides, as well as consulting on the design of the CCNA Network Simulator.

David L. Prowse

David L. Prowse is an author, a computer specialist, and a technical trainer. He loves computer technology, and enjoys sharing with others what he has learned. Over the past decade, he has authored more than a dozen titles for Pearson including books such as the CompTIA A+ Exam Cram and Security+ Cert Guide, and videos such as the A+ Complete Video Course. He has more than 20 years of technology experience spanning a variety of roles, and tries to share as much of this experience with his readers (and watchers) as possible. In addition, he has taught many computer courses including CompTIA A+, Network+, and Security+ to more than 2,000 students, both in the classroom and via the Internet. He runs a support website for all of his products at

Keith Barker

Keith Barker began as a network technician for Electronic Data Systems (EDS) in 1985, and has had experience in IT and networking for over 25 years. Keith holds Cisco CCIE certifications in both security and routing/switching, CCDP and is a Cisco Certified Systems Instructor (CCSI). Keith also holds a CISSP certification. Keith’s past work includes Internetwork Expert, KnowledgeNet, Blue Cross of California and Paramount Pictures. Keith currently works with Nova Datacom as a trainer and consultant. He can be reached at

Mark Edward Soper

An avid writer, teacher, and blogger Mark Edward Soper has authored and co-authored more than 18 books for Pearson technical and professional brands. Most recently contributing to CompTIA A+ driven products for Pearson IT Certification including the new CompTIA A+ 220-801 and 220-802 Authorized Cert Guide, Deluxe Edition and Simulator Library and the CompTIA A+ 220-801 and 220-802 Authorized Cert Guide Premium Edition and Practice Test, 3rd Edition.