http://www.itp-journals.com/nasample/P1405.pdf
Troubleshooting CISCO Routers - It抯 all too easy for a simple configuration error to lead to problems on a routed network. With a little knowledge, tracking down a fault on a Cisco router needn抰 be daunting.
http://www.bradisit.com/cisco.htm
Good Site to study for your Cisco Certifications
http://www.bradisit.com/routebasic.htm
Router Basics - This chapter introduces the underlying concepts widely used in routing protocols. Topics summarized here include routing protocol components and algorithms.
http://www.routeru.com/krang/index.htm
Free Router SIM (simulation tool). Some features disabled in Free version but a nice little study tool.
http://www.cisco.com/cpress/cc/td/cpress/fund/index.htm
InternetWorking Fundamentals from Cisco
http://cramsession.brainbuzz.com/cramsession/cisco/
Cramsessions For Cisco Certification
http://www.mcseguide.com/cisco/640507.htm
CCNA 640-507(Cisco Certified Network Associate) Study Guides and Sample Tests
http://www.firewallking.com/phpnuke/html/
Free Router Lab - Cisco Certification Discussions
http://www.cram4exams.com/freecisco.shtml
Free online practice exams for CCNA, CCDA, CCNP, and CCIE
http://www.cram4exams.com/routerconfigs.shtml
Router Configuration Examples
Free Viewlets:
Connecting to a Cisco Device Using HyperTerminal - Takes you through the steps required to configure Hyper Terminal to access a Cisco device through the console port.
Connecting Two Cisco Routers Back to Back with a Serial Cable - Explains the common configuration task faced by every Cisco student who is building a home lab.
Password Recovery on a Cisco Router - Explains the process to be followed to perform Password Recovery on a Cisco Router.
Configuring Static Routes on a Cisco Router - Demonstrates how to create a static route to a network using a next hop address and also how to configure a ststic default route using an interface.
Configuring IP addresses on a Cisco Router - Shows you how to configure primary and secondary IP addresses on an interface of a Cisco router.
http://mike.raymer.com/ccna/ccna.htm
You will be given 50 random questions out of 200 available questions. Once you have selected your answer click the "Next" button. You answer will be evaluated with any comments and your overall scoring percentage updated. At the end of the exam, your final score will be displayed along with a passing or failing grade point percentage.
http://www.certyourself.com/ciscoex.htm
Free Cisco Practice Exams
http://www.certyourself.com/moreex.html
Free Cisco Study Sites
http://ciscoguide.net/route_examNotes.zip
Study Guide for CCNP
http://www.ccstudy.com/
A good resource site for networking professionals working towards Cisco Certification.