TCP/IP Model Explained | Cisco CCNA 200-301

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What is the TCP/IP model? It's a model to standardise computer networking.

The OSI model, while widely referenced isn't used in the real world. The TCP/IP model, however, is the real deal. Thankfully, it's not all that different.

Here is the original TCP/IP model.
Application, Transport, Internet, and Link.

Just like the OSI model, it's numbered from the bottom up but the direction depends if you're sending or receiving traffic.

So this is the original TCP/IP model, but, it has been updated.
The link-layer has been split into Data Link and Physical
and the Internet Layer has been renamed the Network layer.

Layer 5: Application protocols such as HTTP, FTP, and SMTP

Layer 4: The two most common transport protocols are TCP and UDP.
Port numbers are also added here.

Layer 3: At the Network layer, we have the Internet Protocol or IP.
Routers also commonly operate at this layer

Layer 2: The data link layer contains Ethernet related protocols.
Switches usually operate at this layer. Although you can get layer 3 switches that have routing capabilities

Layer 1: Think of everything you can touch and feel here.
Things like cables, hubs and Network interface cards.

#ccna #cisco #networking

[sinderbloq]

Why am I even paying for uni when these short videos help more than my hour long lectures with my lecturers boring monotone voice

[Jammydodger]

I learnt more here than reading a full long page of info, thanks dude

[freedomguider]

I am getting ready for an exam and you have made it so simple to comprehend. Showing video explanations is better than simply reading a book. Don't you all agree with me?

[gilmsgabriel]

The best part of this channel is that it makes me want to study willingly and not because I should

[serjordan]

I'm studying the Google cybersecurity course now and I got stuck here. I couldn't make sense of the TCP/IP model. But I just watched this video and it clicked. Great work!

[unistern]

this video made me learn something i spend 3 years at university and never really understood all the bullshit our professors was explaining. Thank you guys. keep it up

[ardentdfender]

Got my CCNA exam exactly a week from tomorrow. Already been thru a CCNA learning course. However, watching the entire CertBros CCNA Playlist of 31 vids all in a row as a speed review. May go thru it again one more time before next weekend is over and my exam on next Monday. The vids are so well explained and luv it.

[ola-abiodun]

He made it soooo simple. I became glued to the screen because he was killing it; thank you.

[itaybarok]

I learned some new features of the tcp/ip model so thank you:
- There was a 4 layer tcp/ip protocol where the phisical layer and data link layer was a link layer and the name of networking layer was ethernet layer.
- The idea of 2 sides encapsulation in the link data layer is that the head part contains important staff like mac addresses and the tail contains some error checking data.
- Great diagrams to easy learning
- Super useful information

Keep going

[gbubeminelson-twakor]

Your teaching style is music to my ears. Thank you

[SalemGTV]

Wonderfully done! The diagram helped explain how and what happens at each layer. Previously I didn’t understand but you guys made it clear as day! Definitely tuning in for more

[SuperMelibelly]

I've watched a few videos and by far this is the best explained: concise but very detailed and informative. Love it!

[couloir]

Best explanation on TCP/IP I've seen or read.

[dashaundavis]

Thank you so much for the clear understanding, starting to further my IT career and I have to say there's a lot of abbreviations to learn.

[Candaluk]

holy shit you guys are awesome its starting to make sense to me....wonderful group you have there !!

[SimulationNPC]

Its incredible how this seemed so opaque and I just couldn't make any connections, but just hearing it in a different way made it click into place and now I understand. Thanks for the video, it was super helpful!

[chaitanyakrishna]

i had totally confused when i had try to learn from book but when i had watch this video i had gain clear knowledge from this video thank you so much this video is very helpful to

[Typidica]

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[orleydoss]

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