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Learn more about the networking professionals who lend their experience to help you achieve your goals

To create its highly regarded networking information products, Certification Zone has always relied on a skilled group of world-class experts, who are certified and experienced, to write and develop our Cisco certification preparation products. Instead of using just one or two networking professionals to address the multitude of topics addressed on Cisco's certification exams, Certification Zone finds experts in each topic who have hands-on field experience with the technologies they cover for our site.

Galina Pildush

Marvin Greenlee

Priscilla Oppenheimer

Shirley Myers

Kevin Downes

Certification Zone Study Guides by Kevin Downes:

NAT

CCIE # 1987, CCDA, CNX Ethernet, CNE, Bay CRS, CBE
Senior Principal Consultant, Netigy

Kevin has over 13 years of experience designing and supporting various network infrastructures. Kevin has a wide range of past experience including Banyan Vines, Novell, Cisco Routers and Switches, Bay Routers, IBM Routers, Cascade Frame Relay Switches, ATM, Cisco and NetSpeed DSLAM technology (ADSL and DSL), and most recently SONET and Optical Networking. Kevin has been published on multiple topics to include: "Cisco CLCS Exam Certification Guide", "Cisco Systems Internetworking Design Guide", "Cisco Systems Internetworking Troubleshooting handbook", "Cisco ACRC Exam Certification Guide" and has written various articles for the Banyan Vines Technical Journal and Enterprise Networking magazine on topics ranging from IPV6, Private Network Addressing (NAT & PAT), SNA, Cisco Routers and Designing Large Scale Mobile Access Networks. Kevin currently resides in Mesquite, Texas with his wife and two children.

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