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Zone-Casts are concise, downloadable audio lessons that cover key exam topics that must be mastered to earn Cisco networking certifications. Each lesson is approximately twenty to thirty minutes and concludes with a short series of questions to reenforce the lesson.

CertificationZone Subscribers have access to the complete lesson after they log in; non-subscribers can listen to a brief preview of the lesson.


Routing Principles, Part II

Packet forwarding is the subject of this, the second audio presentation on Routing Principles.

Routing Principles, Part II Preview

Format: MP3 Audio
Size: 3.3 MB
Length: 5 min

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Routing Principles, Part II Questions

Here are 5 questions that test your knowledge of routing packet forwarding.

Questions Preview

Format: MP3 Audio
Size: 1.4 MB
Length: 2 min

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Routing Principles, Part I

This is an audio presentation on Routing Principles at the CCIE level. Often, Cisco documentation and courses are confusing because they don't give the unified picture needed for true understanding of what is happening. This series of audio presentations on Routing Principles is intended to provide some of the "glue" that bonds together many IOS components. Path determination is the subject of this first audio presentation on Routing Principles.

Routing Principles, Part I Preview

Format: MP3 Audio
Size: 2.9 MB
Length: 5 min

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OSI

This is an audio presentation on the OSI Model. The Open Systems Interconnection (OSI) model is a cornerstone of network communications. A thorough understanding of its layers and functioning is important for any internetworking professional.

OSI Model Preview

Format: MP3 Audio
Size: 2.2 MB
Length: 3 min

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