Meet This Area's ZoneMasters
Howard C. Berkowitz
Leigh Anne Chisholm
Richard M. Gosney
Marc R. Menninger
Howard C. Berkowitz is a
product line manager in the Carrier Packet Solutions group
at Nortel Networks, where he works in requirements and
design for high-end routers and switches. His interests
include traditional routing protocols (BGP, OSPF, IS-IS,
RIP), new Internet routing paradigms, IP VPNs, and network
provisioning and management.
He has been a Certified Cisco Systems Instructor since 1993,
doing both network design and education. He is a contributor
to courses including Cisco Internetwork Design and Advanced
Router Configuration as well as to Cisco seminars in
switching, virtual private networks, and data-voice-video
integration. He has also taught Cisco WAN products, and
developed his own seminars in Internet routing with BGP and
advanced interior routing and switching.
An active participant in the North American Network
Operators' Group (NANOG), American Registry for Internet
Numbers (ARIN), and the Internet Engineering Task Force
(IETF), he is the author or coauthor of several RFCs in IP
addressing. His current IETF work includes documents on
multihoming, virtual private networks, and on OSPF network
He is the author of Designing Addressing Architectures
for Routing and Switching, and Designing Routing and
Switching Architectures. His next book, the WAN Survival
Guide, will be available in mid-2000. He has written dozens
of articles for the industry press and spoken at numerous
trade shows and user groups.
Chris Ackerman works for
Dimension Enterprises, Inc. in Herndon, Virginia, as a
Senior Internetworking Engineer. He is a Cisco Certified
Internetworking Expert (No. 4616), a Cisco Certified Design
Associate, and a Cisco Support Pro. He has extensive
experience in systems integration and networking in the
information technology industry, including Voice over IP
system design, development, and implementation and design
and installation of LAN/WAN infrastructures. He has also
served as Project Manager for Winframe System testing and
development and for Novell application testing and
deployment. Chris holds a bachelor's degree from Virginia
Polytechnic Institute and has completed post-graduate work
in Management Information Systems.
Leigh Anne Chisholm has
developed a strong background in internetworking as an
independent technical consultant specializing in
internetworking for Cisco environments. She has worked or
consulted for a variety of governmental, legal, educational,
and commercial organizations which have included Western
Economic Diversification (Government of Canada), the law
firm of Miller Thomson L.L.P., Legal Aid Society of Alberta,
and the University of Alberta.
In addition to her skills as a consultant, Leigh Anne brings
her experience as an educator to CertificationZone.com. She
has taught networking at the post-secondary level for the
Northern Alberta Institute of Technology, and has
co-authored the 1995 release of the New Riders' Publishing,
"MCSE Study Guide: Windows 95 and Networking Essentials".
Leigh Anne holds a Bachelor of Applied Information Systems
Technology (Honors), and has completed her CNE, MCSE, CCNA,
and CCDA certifications. Leigh Anne intends to challenge the
CCIE written exam this month, and hopes to complete her CCIE
certification by the end of this year.
Don Dettmore is a network designer for a leading worldwide
IT Solutions provider to the financial industry. He is
currently working on two network implementations with
Fortune 500 companies.
In addition to writing for CertificationZone.com, he is
co-author of a new book for the CCNP Support exam.
Don's worked with computers for over 10 years. For the last
5 years he has been doing network design and administration.
He holds the CCNP certification, has passed the CCIE
written, and will be taking the CCIE Lab in early 2001. In
addition, he holds CNE and MCSE certifications.
Dan Farkas is a General Manager for Advanced Network
Information (ANI), a high quality Cisco Learning Partner.
Through ANI Dan not only trains Cisco customers, but also
frequently trains Cisco engineers and programmers. For the
last 5 years, Dan has been teaching a variety of network
configuration, design and troubleshooting classes, including
various router, LAN switching and voice/data integration
classes. Dan has co-authored a book, published by Cisco Press,
titled Cisco Internetwork Troubleshooting. When he's not
teaching or writing Dan can be found backpacking and scuba
diving around the world or catching some great live music in
Richard Gosney is a Network
Consultant working in the UK for Cisco Gold Partner and
Advanced Security Specialist, Energis Integration Services.
He has several years experience in the Internetworking arena
with such companies as Unisys and Anixter, primarily working
with IBM Networking Systems, although he is also a CCNP,
CCDP and Cisco Security Specialist and is currently working
towards the CCIE. He has worked on several corporate
networks for such customers as Marks & Spencer, Scottish
Widows, Abbey National and Barclays Bank.
In his spare time Richard is a musician and was a
semi-finalist in the BBC Young Musician of the Year, he also
spends as much time as possible walking in the English Lake
Annlee Hines is currently a System Engineer with Nortel
Networks, where she develops commissioning methods and
procedures for new products and technologies. Her current
assignment is working with IP VPNs and MPLS, with a strong
probability of moving into optical products within a year.
Self-taught, she has earned CCNA, CCDA, MCSE, NNCSS-Passport
7K and Passport 15K certifications.
She has taught in Community College, in topics under all
three of her Master's degrees (Management, Economics, and
Government), but her real loves are network engineering and
writing. She has self-published a not-so-great novel, and
dreams of the day when there's enough time to write again.
Meantime, she continues the fight against the growing pile
of technical books.
For hands-on, she gratefully acknowledges the support of
Labnotes, and the Bare Nekkid Routers study group in the
Dale Holmes is a partner and
Senior Technical Consultant for AllNet, LLC in Baltimore MD.
He is CCNA certified, as well as MCSE and CNE, and he holds
a UNIX systems and C programming certificate from George
Washington University. He is the author of the CCNA ExamGear
test prep program from New Riders Press, as well as
co-author or technical editor for a number of other
He is currently living in downtown Baltimore, and can often
be seen walking his dog Roxanne through the streets of the
city. Feel free to stop him and ask him questions about
Chuck Larrieu learned networking
as the logical outgrowth of doing technical support at
Merrill Lynch's San Francisco Institutional Sales Office,
and later as Technology Manager for Van Kasper & Company
(now First Security Van Kasper), a regional brokerage firm
headquartered in San Francisco. It was there that he
discovered Cisco routers and switches, and realized that the
future of technology lay in connecting people, systems, and
businesses. He now works as a Sales Engineer for SBC
Datacomm, a premier network integrator and Cisco Gold
Chuck is married, has three sons, struggles with the demands
of job, family, and the pursuit of certification, and
relaxes by taking long walks on local mountaintops.
Dr Barry Meinster, Ph.D. has
spent over 30 years in education and IT training. Dr.
Meinster has authored for IDG Books World Wide while
assisting several other publishing and on-line training
companies. He is certified in the following areas;
MCT,MCSE,Cisco CCNA,CCNP and Oracle DBA OCP. Currently he
heads Delaware Bay, a Philadelphia-based
training company offering courses for people working toward
Cisco's CCNA and CCNP certifications.
Marc R. Menninger is a
consultant at Netigy (http://www.netigy.com), a professional
services company that specializes in network management,
architecture, performance and security. Marc's background
is in secure networking and network performance testing.
Marc was a computer/communications officer in the Air Force
for five years prior to his happy transition to civilian
life in 1997.
Marc received his bachelor's degree in Mathematics from the
University of Tampa, where he was also the editor of the
University's literary journal. Marc has obtained his CCNA
certification and is actively pursuing the CCNP track.
Marc lives in San Francisco with his wife Olga and chihuahua
Faye. Marc likes to spend his free time going to movies and
exploring the city of San Francisco.
Priscilla Oppenheimer has been developing data
communications and networking systems since 1980 when she
earned her master's degree in information science from the
University of Michigan. After many years as a software
developer, she became a technical instructor and training
developer and taught more than 2000 network engineers from
most of the Fortune 500 companies.
Her employment at such companies as Apple Computer, Network
General, and Cisco Systems gave her a chance to troubleshoot
many network design problems, and the opportunity to develop
a practical methodology for network design. Her book
Top-Down Network Design teaches that methodology.
Priscilla has extensive experience working on Ethernet,
Token Ring, FDDI, ATM, Frame Relay, ISDN, AppleTalk,TCP/IP,
and Novell NetWare networks. She is a Cisco Certified Design
Professional (CCDP),Cisco Certified Network Professional
(CCNP) and Certified Network Expert (CNX) in both Ethernet
and Token Ring.
Galina Diker Pildush, CCIE #3176,
CCSI, is the President and a Senior Consultant at Advanced
Communications Experts (ACE) Inc. She provides training and
course development for Global Knowledge Network Inc., a
leading Cisco Training partner in the world. After earning
her M.Sc. in Computer Science, she worked for thirteen years
for major world-wide corporations in the areas of
internetwork design, architecture, network optimization,
implementation and project management.
She has been an academic teacher at York University,
teaching Computer Science, Data Communications and Computer
Network courses. Gaining extensive technical experience in
Internetworking and Cisco-line of products, she reached her
Routing and Switching CCIE certification in 1997. Currently
Galina holds CCIE in ATM and LAN Switching. Deploying her
passion for teaching, Galina teaches variety of Cisco
courses. Upon achieving her CCIE, Galina decided to dedicate
majority of her professional carrier to training and
mentoring CCIE candidates by taking on a role of a technical
director for the two very successful CCIE preparation
programs � NetGun Academy and CCIE BootCamp at Global
Knowledge Network Inc. Areas of interest and specialization
are ATM, internetwork design and optimization, and Voice
over IP. She has just completed a book on ATM titled Cisco ATM
Besides the demanding professional work, Galina, her
husband, their 2 children and their dog, who is a Canadian
Champion, enjoy spending those rare moments together in
travels, skiing and cycling.
Mark Poplar is an accomplished
network engineer with extensive experience designing
networks, installing and configuring routers, switches,
servers, and other Cisco and Microsoft products. A team
leader at a network consultancy firm, he provides technical
support and troubleshooting services to more than one
hundred mid-sized corporations. He holds eight professional
certifications, including CCDA, CCNA, MCT, MCSE, MCP, and
A graduate of California State University and Kent State
University, he has published three books, Prep Guide for the
CCDA Exam, Cisco CCNA Routing and Switching Exam Prep, and
CompTIA's Network & Exam Prep. He has also contributed to
Microsoft Certified Professional magazine
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 just completed her CCNA certification and is
currently working on her CCNP.
Ronald Trunk has over twenty years
experience in Network Design and System Integration. He has
worked or consulted for a variety of governmental,
financial, legal, educational and commercial organizations
including the U.S. Postal Service, GTE Spacenet, Security
Pacific National Bank, Maryland National Bank, the
International Monetary Fund, Steptoe & Johnson, LLP,
University of California and numerous smaller firms in both
the U.S. and Europe.
Ronald has currently been promoted to Network Architect at
TimeBridge Technologies, Inc. Ronald is CCIE #5942.
David Wolsefer is a Sr.
Internetworking Engineer and consultant for Nortel Network's
ISP/ASP Data Center practice. David is also Cisco Certified
Internetworking Expert (CCIE) #5858, and a Microsoft
Certified Systems Engineer (MCSE). His areas of expertise
include LAN/WAN infrastructure, network security, and
ISP/ASP data center design and implementation. David holds a
bachelor's degree from the University of Florida and has
completed extensive post-graduate work in Applied