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   Virtually all Internet traffic travels across the systems of one company.
  Cisco Systems.                      -Empowering the Internet Generation-

LINKSYS AND CISCO Click to watch the story

Cisco has entered into the consumer home networking business through the acquisition of Linksys - the #1 vendor of home  network products.

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CCDA
Duncans MindLeaders Series on CCDA

Total Time: 32 hours

Get 12-month access to all 10 courses listed below for only $59.95.
For a better value, buy the Package! Technical General contains this series and 227 more courses for only $119.95.

CCNA
Duncans MindLeaders Series on CCNA

Total Time: 53 hours

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For a better value, buy the Package! Technical General contains this series and 219 more Courses for only $119.95.

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TCP/IP Series $59.95US/yr - 10 Course Synopsis
Network+        $59.95US/yr - 10 Course Synopsis

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Cisco Reading Sites
Internetworking Basics
OSI Background
OSI Networking Protocols
Cisco - OSI Network-Layer
Frame Formats

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Cisco Reference Sites
Duncans MindLeaders CCNA Study Guide
Duncans BookShop Cisco Shelf
Cisco NetworkStudyGuides.com
RouterSim - Interactive Router-Simulated Training
Krang Router Simulator
Router University - On-Line Simulation
GlobalNet Cisco Training - Tod Lammle
Boson Software, Inc. - finest technical practice tests

LabsOnline allows you to gain hands-on experience with Cisco® routers. You can modify configurations and not worry about bringing down a production network. We give you full remote access to an entire rack of routers which are pre-wired in various ways. This is not a simulation.

Welcome to Fatkid.com. This site hosts the cheapest training material that you will find anywhere, to improve your knowledge of Cisco® Products. (It's all free!!!) We are a full featured site with practice questions, labs and scenarios and even equipment to practice on (OK, you have to pay to access the equipment)

Understanding IP Addressing: Everything You Ever Wanted To Know 
By Chuck Semeria

LearntoSubnet.com: A free lecture-based Educational Course on Internet IP Addressing and Subnetting.

Subnetting Calculator Download Freeware 

Protocols.com is a free service for the data communications and telecommunications industry.

Cisco CCNA Exam Question  Sites
Practice Exam Questions CCNA
Practice Exam Questions CCNA
CCNA Practice Questions

There is some more CCNA questions, there is only 50 of them, but they are good questions. It keeps track of the last 25 people who took them. They are pretty hard questions. 

More good CCNA Practice Questions - 390 of them, there are 5 tests 78 questions each. 

Click here for Test information, and free router access

Cisco Study Links

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The Internet 
Behind the Net - The untold history of the ARPANET

Internet 2
very high performance Backbone Network Service +
vBNS Backbone Network Map

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Ethernet
Welcome to Charles Spurgeon's Ethernet Web Site

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Standards

ISO Online	(International Standards Organization)
IEEE	(The Institute of Electrical and Electronics Engineers)
IEC	(International Engineering Consortium)
ITU	(International Telecommunication Union)
W3C	(Universal Description, Discovery andIntegration)
UDDI	(World Wide Web Consortium)
USB	(The USB Implementers Forum, Inc)

Dedicated to preserving the central coordinating functions of the global Internet for the public good.  (Click here)

Check out this massive list of port assignments  (Click here)

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