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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.

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

Marianne Lepp


Marianne Lepp earned her Ph.D. in Mathematics at the University of Wisconsin. She was an academic for seven years before being lured into Internet research. She has worked at BBN, Genuity, and Juniper Networks. At these companies she chaired IETF routing working groups, monitored Arpanet and the Internet, prepared coursework on BBN protocols, ran the capacity engineering group for Genuity, did research on OSPF convergence on a live ISP backbone, and was a consulting engineer for Juniper. In between she wrote and edited books for Addison Wesley.

When not exploring her new interest, network security, she occupies herself with yoga, training her dog Simon, skiing, and scuba diving.

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JSI Netsystems, Piscataway, NJ

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