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Complex networking topics explained in the simplest way possible…
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872 lessons and I am constantly adding new lessons, videos and reference material. Everything is explained in the simplest way possible.

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March 15, 2026
Mohamed Ramadan
ITSM Team Lead
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NetworkLessons.com provides very constructive courses. Their lessons are easy to understand, especially the labs. It really is networking in plain English, just like they always say.
April 10, 2024
Matt Bednar
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NetworkLessons.com does an absolutely wonderful job of taking the time on every lesson to cover all aspects of a particular technology and does it in a way that builds, concept upon concept. This is very good for those who are looking for a systematic approach. This is my go-to site for things I need to refresh on. By far, the best value on the market. Engineers tend to get lost in the details. NetworkLessons.com will make sure you stay on track!
December 19, 2023
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Having studied networking material from countless sources over the last 20+ years, I have to say that the hybrid textbook/lab scenario approach of NetworkLessons.com is one of the most effective teaching paradigms for me. They strike a balance between theory and practice, and their step-by-step illustration method to demonstrate various concepts and behaviors–ones which are normally very abstract and boring to read on their own, come to life and suddenly seem simple and easy to digest.

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“My name is Rene Molenaar, and I am here to help you to achieve your goals. Do you want to upgrade your skills? Want to start a career in networking? Become a CCIE in Enterprise Infrastructure? Let me help you! After teaching Cisco classroom courses for several years I decided to share my knowledge online on NetworkLessons.com.”

Rene Molenaar CCIE #41726, founder of NetworkLessons.com (and primary course author)

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