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

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

[@Certbros]

Haha! Some say I have a boring monotone voice 😂 Glad there is someone out there with a more boring voice than me! Great to hear the videos are helping.

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@@Certbros Sorry to say but you do have a boring monotone voice. But your videos are great anyway because you really, REALLY know how to present and explain ideas very well and simply. You've got a new subscriber and, even though I'm not the least bit interested in the CCNA course or even the CCNA cert itself, I'm buying your course when it's out.

[@myeducationlibrary6756]

Exactly 💯

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My thoughts exactly lol

[@Jammydodger000]

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

[@Certbros]

Glad to help. Thanks man!

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Lool foreal

[@yunglew7500]

Agreed

[@Torterra_ghahhyhiHd]

@@Certbros why they wan to ban internet T_T in to just network.

[@John-ly4pu]

Original Model of TCP/IP:
Application
Transport
Internet
Network access
Updated model:
Application
Transport
Internet
Data Link
Physical
Can you please clarify? as this will easily confuse people. Your Diagram says different
"Network" was never part of the updated model of TCP/IP right?
and "Network Access" is part of the original model.

[@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?

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Good luck bro!

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

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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

[@Certbros]

Thanks! Great to hear you finally got it after watching this 👌

[@tnndll4294]

@@Certbros The video is good. But if you could do a video clarifying why many websites on Google list NICs at Layer 2.
I hear the Network+ exam expects people to answer layer 2, even though it has a physical component. Does the CCNA expect layer 2 as well?

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I don't think u can blame your professor for that, it's highly likely u were not interested to learn at that time ..but now u r which is great 👍

[@lovegarbage]

That's because your professors didn't understand it.

[@manuelsilva3770]

​@@AnilSharma-pl6cw I'd say it depends on the professor, some you can definetly blame I mean I had a professor that provided machines for everyone to work on during online class because of the pandemic and then I had one that used a 2007 powerpoint and read of it to teach, some professors see the job has building the future of ones country and some see the job has a paycheck at the end of the month. (the machines provided weren't physical the professor had a server of his own on which he created several virtual machines for each student because some students didn't have the means to have online classes).

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

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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.

[@109_hassy]

how'd it go

[@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

[@Certbros]

Thank you Veilent! really glad you liked the video. Welcome to the channel 🎉

[@grippysockgf]

So glad you’re back I love you’re work keep it up !!

[@Certbros]

Thank you! Will do!

[@gbubeminelson-twakor6452]

Your teaching style is music to my ears. Thank you

[@itaybarok9405]

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

[@stephenhawking2981]

ok

[@mohammedmohammed-ep9po]

The "internet " not the "Ethernet" thank you 😊

[@abdelmoumenekirati6849]

More than wonderful explanation ... I hope with all my heart that you will continue to publish more of this high-quality content ... I follow and support you from Algeria

[@dashaundavis1413]

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.

[@Certbros]

The abbreviations and acronyms never stop I'm afraid 😂

[@couloir1]

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

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wohoo new videos! my final exams are saved!

[@Candaluk]

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

[@Certbros]

Thanks! Glad to hear it helped.

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Glad to have you back!

[@Certbros]

Thanks. Good to be uploading again!

[@SuperMelibelly]

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

[@Certbros]

Thank you! Glad you liked the video.

[@jabreeellis3740]

I agreee!

[@orleydoss3171]

Excellent content as always. 1 of the best intro's to wake up to. 👍

[@Certbros]

Glad you liked it!

[@serjordan13]

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!

[@danwroy]

Same, I like the instructor but they don't explain it well at all

[@Classically.Inclined]

I'm gonna watch 'em all! Thanks, CertBros!

[@miahardianti2865]

Best explaination ever ! Effective and simple !!! You helping me so much thank you ❤️

[@Certbros]

Thanks Mia! Great to hear you liked the video. You're welcome and thanks for the comment!

[@nuaymshaikh8861]

finally, a good video to show the process of how the model works !!

[@hendrikushuijskes1438]

Wow this is great , so understanding and easy for learning than reading a bulky book

[@RayanMADAO]

Giving examples of protocols for each layer made it a lot clearer for me, thank you

[@jacoblegassie9289]

my mom says your wrong
uwu

[@Typidica]

This is the equivalent of Bang Bros for CCNA

[@the77th]

😹😹😹😹😹😹😹😹😹😹
Get your brains fvcked quick and straight to the point 😹

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damn bro. chill 😂

[@yowthubert1731]

Well explained with structured visulas ! subbed!

[@Randomtv-111]

Wow so much detail made easy to understand… best one on RUclips

[@newsnetworkz]

This is best and short video of TCP/IP explained ever.

[@jonathanpadoa8987]

Great video guys and helps explain things very clearly! Will continue to watch your stuff! Cheers

[@Certbros]

Thanks Jonathan! Great to hear you like the videos.

[@shawenmahmood3699]

Omg this is so helpful i was confused but when i watch this I totally understand thank youuu😍

[@arghosinha1424]

Amazing work, real easy and visual candy explanation.
Keep the good work going ❤️🔥

[@Certbros]

Wow thank you Argho! Really appreciate it. 👌😁
Glad you liked the video.

[@sharpiemuffly7976]

Very informative to refresh knowledge after long time not studying. Going for 2nd line NOC job interview tomorrow.

[@sidharthrai4184]

all the contents are good and understandable. Wonderfully explained !

[@tendaimarimo6603]

My 3rd video watching TCP/IP models being explained but this one explained it best. Thank you!

[@Certbros]

Thanks tendai, appreciate it!

[@cathode-kits1894]

excellent , the slides showing the layers made it very clear

[@Certbros]

Thanks again Cathode! Great to see you
e liking the videos.

[@hennadiikasian4389]

the best video here to describe layers in different protocol models

[@johnconnor9787]

That is great that you again started creating this awesome videos

[@Certbros]

Thanks Mr Frog! Got a lot more on the way.

[@exoticcoder5365]

I Love the layer table at the end ! Very clear ! Thank you so much ! Best video out there !

[@jacoblegassie9289]

its not a table it is a png of words and constructs that humanity has developed that will ultimately lead to the spread of this comment making its way to youtubes end device I am trolling you using the OSI model get rekt

[@anthonyrimshas7601]

oof@@jacoblegassie9289

[@cloudfun546]

Thank you for this video. Your explanations really made it easy to learn and understand the TCP/IP model

[@Certbros]

Thanks Ryan. Glad you liked it 👍

[@davidnguyen9065]

Thank you! This has been wonderfully explained and cleared up some of the my confusion that I had

[@Certbros]

Thank you David! Glad it was helpful!

[@themindhealer6912]

I learned a lot from these videos.far better than lectures...😍😍😍🙏🏼🙏🏼🙏🏼

[@maxsmith3977]

Here revising old work about to have my job interview as a network engineer😊 thank you for the quick notes

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Thanks man, this was very helpful I had the knowledge and successfully completed the exam. But did not fully understand the basics until I watched this video.

[@Certbros]

Thanks John. Congrats on passing the exam! 🎉

[@SibiSudarsh]

thankyou guys this helps a lot! i have this in my CA IPCC syllabus.

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This helped me so much! Thank you.

[@Certbros]

You're welcome. Glad it helped!

[@supbrice]

He is an amazing teacher. Thanks 😌

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This has been super helpful. Thanks!

[@FuzNuts]

You were born to be a teacher. Thank you so much!

[@Certbros]

I wish my teachers growing up could read this comment! 😂 Thank you very much, I really appreciate it.

[@FuzNuts]

@@Certbros Keep up the great work!

[@adriatical9016]

Thank you very much, this helps me understand Wireshark a lot more now

[@matthewcrosby3501]

Really clear and succinct. Thank you

[@chaitanyakrishna3643]

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 me.........

[@Certbros]

Thanks Chaitanya! Glad it helped.

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you explain everything in a awesome way

[@Certbros]

Thank you Sahar!

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Thanks a lot about this video, it's amazing how you descibe the information.

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the explanations are just top notch🔥🔥🔥🔥🔥🔥

[@hjortstigen3]

Nice ending, "not much more to learn". Big LOL on that one :)

[@Riteshyadav-ud4cb]

Thanks, great explanation through diagrams

[@fahadabdulaziz5070]

Thanks a lot, straight to the point & very good use of terminologies

[@Certbros]

Thank you. Great to hear you liked it Fahad 👍

[@devilmaycry0204]

5min video gives me more info than 15pgs of BS, thanks a lot

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Very simply and clearly explained

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Thank you. Very well defined. Easy to understand.

[@Certbros]

No problem at all. Happy to hear it was helpful.

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This whole course is awesome. Thank you for this great free content

[@Certbros]

Thanks Michael! Glad to hear you're enjoying the videos.

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Thank you for this amazing video. Excellent!!

[@Certbros]

You're very welcome! Thanks for the comment!

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Thank you for making this clear this for me

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Very well explained! The video was also very professional

[@Certbros]

Thank you! Great to hear you liked it.

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Thank you, this made my day!
(or should I say night... before an exam!)

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thank you. This is the best material next to David Bombal

[@Certbros]

That's a pretty big compliment! 👍 Thank you.

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Superb 👍 the diagram explained made it to simple. 👍👍👍thanks a ton🙏

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Great explanation, thanks!

[@Certbros]

Thanks!

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Thanks for the simple explanation

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The explanation is mind blowing

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What an excellent explanation!

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Thank you! Great to hear you liked the video.

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This was great!!

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Better than course era course….Thanx😊😊😊

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Thanks Rakshith, really appreciate it.

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Very nice and clear explanation

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Thank you for the explanation.

[@Certbros]

No problem!

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It helped me to learn in simple way of encapsulation process

[@Certbros]

Glad it helped! Thanks for the comment.

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I watched 3 other videos on this and read 2 different references and now in a 5 min video I understand it wish I'd started here

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תודה רבה ההסבר מעולה וברור

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Very understandable. Good work.

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Thank you!

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Happy to help

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