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Understanding Network things: part 1 – L4 / L7 layers

Aurélie Vache on April 28, 2021

Hi, I've got a secret for you, since several years. I'm a developer and I'm a mess in understanding network things! :'( It's hard to not understan...
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Vinay Hegde

People do tend to forget the difference between L4 & L7 inspite of working with it daily so thanks for the excellent visual notes, Aurelie :)

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Aurélie Vache

thanks :)

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Fernao Vellozo • Edited

UDP is another popular protocol that operates in Layer4. So, if you'd like to expand your sketch, you could draw another road for UDP over IP, which in turn could prompt yet another sketch to explain the differences between TCP and UDP.

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Aurélie Vache

thanks Fernao, good idea! :-)

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Shrikant Shete

Thank you for explaining and also sketchnotes are very nice..

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majed L

Very sweet

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Aurélie Vache

Thanks Majed ♥️

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csgeek

You should talk about the tcp model as well in comparison to OSI. I believe it has 5 layers instead of the OSIs 7.

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Aurélie Vache

Thanks csgeek, I'll think about this point :-)

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Lou (🚀 Open Up The Cloud ☁️)

Short but sweet, I like it! I also constantly mismatch / forget the different layers, thanks for the reminder, Aurélie!

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Aurélie Vache

me pleasure :-)
Hope you'll like others articles ^^

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Nkwenti Fon Nkwenti

thanks for this.