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Certification Zone has the training
and study tools you need to pass the
Cisco® CCIE™, CCNA™, CCVP™, and CCNP™ certification exams.
Subscribers have access to:
3505  Study Questions
80  Tutorials
94  Lab Scenarios
30  Experts
Here's how Certification Zone helps you to prepare for and pass the Cisco® CCNA™, and CCIE™ certification exams.
(For CCNP™ and CCVP™ exam assistance, visit our Tutorials page.)
What's New

Routing Principles ZoneCast
With the release of two new presentations, the audio presentation series on Routing Principles at the CCIE level is now complete. The first new presentation (Part II) covers packet forwarding and that is followed by an audio quiz on the topic. Previously released was an audio presentation on path determination (Part I).

Gateway/Gatekeeper Study Guides
The addition of a Study Quiz and a Lab Scenario completes the Gateway/Gatekeeper Configuration, Part 2 Study Guide. This second GWGK Study Guide focuses on Gatekeepers. The Part 1 GWGK Study Guide focuses on Gateways. When you're done with these two Study Guides you'll be able to design, configure, and deploy the Gateways and Gatekeepers required to meet specific VoIP requirements, and you'll have covered the topics on the CCVP Gateway Gatekeeper Exam no. 642-452.

Create a Personal Study Zone
If you're a CCIE or CCNA candidate and you haven't yet created your Personal Study Zone, you can do it here, right now, for free.


Concise, expert written overviews of CCIE, CCNP, CCVP, and CCNA blueprint topics you must master to pass Cisco's exams.

Sets of challenging CCIE, CCNP, CCVP, and CCNA certification
exam study questions sorted by certification level and exam topic.

Router applications that help you prepare for the router simulation questions on Cisco's CCIE, CCNP, CCVP, and CCNA exams.

Full-length practice tests that cover all the topics included on Cisco's CCIE, CCNP, and CCNA exam blueprints.

Create your own personal CCIE or CCNA Study Plan, and try Certification Zone for free!

Downloadable audio lessons that address topics you must master to become Cisco certified.

Today's Focus:

Address Resolution Protocol (ARP)

The Address Resolution Protocol (ARP) tells hosts how to find the MAC address of any other host on the local network. Virtually all protocols, whether they be TCP, AppleTalk, or some other protocol, use a form of ARP to find other hosts on the network. In order for a host to send a packet to another host, it needs to know the MAC address of the machine's interface. ARP provides the mechanism to find the target's MAC address knowing only the IP address, for example. This tutorial covers how ARP...
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