production3
Certification Zone Join NowLog InMy Shopping Cart
Tutorials Study Quizzes Lab Scenarios Practice Exams
Meet the Experts

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

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.

Andrew Whitaker
Annlee Hines
Barry Meinster
Chris Ackerman
Chuck Larrieu
Dale Holmes
Damarcus Richards
Dan Farkas
David Wolsefer
Dennis Laganiere
Don Dettmore
Galina Pildush
Howard C. Berkowitz
Jason Sinclair
Jason Wydra
John Neiberger
Katherine Tallis
Ken Chipps
Kevin Downes
Leigh Anne Chisholm
Marc R. Menninger
Marianne Lepp
Mark Poplar
Marvin Greenlee
Michael Connelly
Mike Sweeney
Peter A. Van Oene
Priscilla Oppenheimer
Richard Gosney
Rita Puzmanova
Rodgers Moore
Ronald Trunk
Scott Morris
Shirley Myers

Katherine Tallis

Certification Zone Study Guides by Katherine Tallis:

Firewalls

OSI Reference Model, 2nd Ed.

Katherine Tallis is a senior WAN Engineer with Lockheed Martin Corporation. While working as a graduate student in Psychology she started writing statistical programs for mainframe computers and eventually migrated into technical support and consulting.

She has spent more than 15 years working in Federal and private industry on networks ranging from a single office with a handful of devices, to global WANs with hundreds of routers, Novell servers, and workstations.

Katherine has completed her CCNA, CCNP, and Cisco Security Specialist certifications and is currently working on her CCIE.

Personal Study Zone

Home
Join Now
About Certification Zone
Zone-Casts
NetSmarts
Exam Study Tool
Zone Newsletter
Testimonials
Shop for Study Tools
Our Cisco Certified Experts
FAQ
Contribute
Partner / Advertise
Contact Us
More Resources

"As a Cisco CCNA Academy instructor I find the additional information extremely helpful in preparing myself for class presentations as well as checking my own knowledge."

John Fialko
CCNA Networking Academy Instruct
Ft. Collins, CO

Read More Testimonials
Copyright © Genium Group, Inc. All rights reserved. Terms of Use | Privacy Policy 
Certification Zone is an independent product, not sponsored by, endorsed by, or affiliated with Cisco Systems, Microsoft Corporation, or the Field Certified Professionals Association. Cisco®, Cisco Systems®, CCNA™, CCNP™, CCVP™, CCIE™, CCSI™, and the Cisco Systems logo are trademarks or registered trademarks of Cisco Systems Inc. Microsoft®, Windows®, Windows 2000™, Windows 2003™, MCSA™, and MCSE™ are trademarks or registered trademarks of Microsoft Corporation. FCSA™ and FCSE™ are registered trademarks of the Field Certified Professionals Association.