what is TCP/IP and OSI? // FREE CCNA // EP 3 

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I remember the first letters of the OSI model with the phrase “A Priest Saw Two Nuns Doing Pushups”

Going through this series wanting to make a career change. You're an awesome teacher. You probably won't see this but you definitely are doing amazing work. Thank you for taking the time to help us all out

I always remembered it as: "Please Do Not Throw Sausage Pizza Away" I remember it from when I first learned the OSI years ago!

I love that Guy, his Mindset is pure motivation to start from scratch ! 🧔🧠❤

Dude i cant explain how much i am thankful for this series!

I never knew how much I wanted to learn 10-20 minutes at a time every few days.

I just finished my Bachelor's Degree in IT and I am now studying for CCNA. Your videos are way more enjoyable than being glued to a book non-stop. Thank you for your effort in making these videos. Well done!

These classes are more entertaining, digestible, and helpful than all of the the courses I've paid for. I feel like they just teach me about it and you somehow make me love it.

Really appreciate all of the effort you put into your videos Chuck. You inspire me to be a better teacher in my own!

dude! thanks man for making this dummie friendly,,, ive been watching videos for hours and got nothing. Subscribed (Y)

I could hear the same concept 50 times, but when Chuck begins to describe the concepts, it just makes sense! Thank you for all you do. :)

Thank you Chuck! You have no idea how much this has helped me. I learn a little differently, and have a very clear representation on these subjects makes me feel that much more confident! Thank you, thank you!

Chuck, I just discovered you. Completely rekindled my love for programming/ethical hacking/ etc. Thank you, thank you, THANK YOU!

Not sure how important this comment will be but 5:30 is what made me watch all prior videos. I originally was only here for OSI and TCP/IP learning.

Man, your explanations are so enthusiastic and straight to the point, I love it. I have to study cisco as part of my it career switch pack, but when I was watching the videos I couldn't understand anything and just wanted to skip to the next and so on. I am really happy I have found this content

Chuck I obtained my CCNA 1 week ago, thanks for all your great content and motivation!

Worked in IT for about 3 years now. Watched your "Starting over in IT" video a few days ago. Passed my AWS CCP but feel like I need better fundamentals in networking! Currently studying for my Network +. Love your channel and all your content. Thanks for bringing a modern and fun take on reaching networking. Graduated from college last December and my networking book was from 1997 and came with a floppy disk... needless to say we did not get taught very well!

You've made me love CCNA from the first episode and for that I wanna say thank you. Your explanation of things is marvelous. God bless you

This course is much needed for me. You are a blessing! Thank you so much . I just wish you never stop making such cool videos .

When I first was studying networking in the mid 2000s I was taught the OSI model . To my understanding the TCP/IP model is the same except it merges the layers of the osi model so there are less in total. I find using the osi model great for troubleshooting as I feel I can see more and break things down more finely.

Love from india man. I am network administrator in infosys. I watch your videos regularly.make more like this.really helpful content❤

I am definitely learning! Thanks a million for this course. You have demystified for me these layers, never quite got the hang of it till watching your tutorials.

Just started this journey a little later in life than I wanted. I really appreciate your videos and look forward to taking the CCNA now instead of dreading it.

I can't wait to see subnetting episode that give headache x_x

1. Please 2. Do 3. Not 4. Teach 5. Students 6. Pointless 7. Acronyms Would fit best, I think! Hey Chuck! Your content is amazing! Thank you for commitment!!!

While studying for my network course at the Uni specifically Layers (OSI and TCP/IP), this video notification came to me! Just in TIME! Thanks! Saved me a lot of time

I've been struggling to choke down the OSI model for years. I have my Network+ in a couple weeks and FINALLY get it. Thank you for making this so relatable.

I'm in love with this series. You always answer the right questions.

I am a computer engineer by profession, and I hold an Engineering degree, but damn, OSI Model just became clear to me now. For the life of me, all through my undergrad days and then 14 years of industry experience, I was like how the hell do you map these models practically. Finally, I have my answer :)

We just got to the OSI and TCP/IP models in my intro to networking class. This video was immensely helpful, thank you Chuck!

Ty chuck. Went to school for ccna 2017-2818,had kids now back trying to complete my ccna. Your videos are awesome and explain it much better than most. Analogies etc make it easy to understand.

Damn, my attention is so easily distracted. This shirt got my attention!

Surely.. There is only coffee in your Veins.. 😅 Great Content Keith Chuck.. Loved it.. Thanks for all the efforts you are putting in for this...

Currently working at an MSP and have NOC interviews coming up. This video was a good and entertaining refresher.

Networking is amazing, every time I think about the internet and how all devices are connected it blows my mind, it seems surreal to me.

Excellent Chuck!! Thank you for your efforts.

Thanks man. Love the history lesson in the beginning, because we need to know how things got started.

This guy is my favorite person on the internet right now.

FINALLY, SOMEONE EXPLAINS WHY WE ARE STILL TALKING ABOUT OSI

Thank you so much sir for Your Support Appreciate a Lot 👨‍🔧

OSI was around a long time; technically, each vendor followed the model when they created their proprietary stacks. OSI was too vague, allowing vendors implement it in very different, incompatible ways. TCP/IP is a well defined protocol, very clear on layer boundaries and packet formats. Unfortunately, TCP/IP was designed with the mindset that every computer on the network is trusted. That's why it's a never ending struggling to secure things. DNS is fairly vulnerable, POP mail was a joke, and so was telnet (remote shell). Everything was in clear text on the network, no encryption or protection from DNS poisoning or spoofing. Things are much better, but still far from perfect.

Where were you back in the days when I was trying to wrap my head around the OSI-model? This was brilliantly explained! Awesome! Have an internett point. You deserved it.

This is how modern teachers do, they simplify every point smoothly like you. You are the BEST undoubtedly Chuck!

I miss Layer 8, somhow you forgot it ;P

What is the TCP/IP Model? OSI Model? // CCNA Course 200-301 - sponsored by the Boson Software: bit.ly/bosonexsimccna (affiliate) Watch the whole course: bit.ly/nc-ccna Go deeper: ntck.co/ncccna 🔥🔥Join the NetworkChuck Academy!: ntck.co/NCAcademy ☕☕OFFICIAL NetworkChuck Coffee: NetworkChuck.coffee ☕☕ Watch the whole course: bit.ly/nc-ccna Join the Discord server: bit.ly/nc-discord Install Packet Tracer: bit.ly/packtracer CCNA Episode 3 Packet Tracer Lab: bit.ly/ccnaep2pt 0:00 ⏩ Intro 0:55 ⏩ Birth of the internet 2:04 ⏩ why we need a network model 3:58 ⏩ the TCP/IP Model 6:12 ⏩ the OSI Model 7:02 ⏩ why we still talk about OSI 9:09 ⏩ QUIZ TIME!!!

Chuck, you are AMAZING! Thank you so much for this series! Thoroughly enjoying it!

I am second viewer❤

Please do not throw saucage pizza away......this will be better to remember the layers in OSI model

i love the storytelling and history about IT stuff in every episode it is easier to remember but it nice to know why and when to better understand

Love how I’m looking at ccna content for my A+ but you’re making learning it fun thanks

This OSI mnemonic got me through school: A ss P resents S eriously T roublesome N dications. D ont P lay.

Thank for these. I'm just starting out and the OSI and TCP/IP models are very overwhelming; you do a great job of breaking up the layers and concepts.

man this guy is such a good storyteller...Im an EE studying Linux and ended up in this channel, few videos later, im now studying for a test i didnt even knew existed until now

Im studying PLC programming for controls automation for my job and other than running applications, i have very little knowledge of computer science. Your videos are extgremely helpful! thank you so much for your time and knowledge! thanks!

Oh. My. God. I got my CCNA certificate end of December, but i think that was out of luck because I have to relearn it all (it was very clear). I'm SO SO happy to have found you and SO SO sad I didn't find you whilst studying my CCNA. I'm binging your videos this weekend. You are the teacher we all need. You explain things in such a good and easy way.. i mean, dayum. THANK YOU !

Love your personality and the simplicity of your explanation. Thanks Chuck!

In Germany we're memorizing OSI by "Alle Priester Saufen Tequila Nach Der Predigt" which is translated to "All priests are drinking tequila after the sermon" lol

Have been in IT for just about 4 years now. I have my Sec+ and A+ but still no networking certifications. So far this is all stuff I know, but I'm eating it up as review, and clarification for things I didnt fully understand before. Very good content.

This is honestly one of the best tutorials I've seen

love this, love your energy and explainations. thank you

I signed up with htb and I am so humbled … I know nothing…but my brain is reviving and now want to learn !! Thanks Charles

How can someone explain so well and make it fun, wtf!? 100% supporting you.

I find it easy to memorize when using this mnemonic "Please Do Not Throw Sausage Pizza Away" this is for the OSI, when comparing it to the TCP you could imagine that you threw the sausage pizza away because it doesn't have the Transport and the Session layers.

I didn't know what moment I went through all the vid!! it's just so good that I dive so deep into it and enjoy it so much that it finished too fast.

Your tutorials along with Farhouzen are helping me a lot to clear the concepts.Thank you sir 🙂

Thanks for these courses, I know others put stuff out but I think you're a really great teacher! You have a very engaging, and approachable personality. I'm sure I'll need a couple more study resources than just this playlist, but it's a great start for me. Can't wait to get through it all and upgrade my career.

i'm very lucky to found this channel with this kind of content. keep it up budd, you are helping people out

Wow honestly I am so happy I found your channel. My prof is simply reading off the powerpoint and not explaining a single term. Thanks for facilitating my learning and doing his job lol

I'm a Linux system administration and I just love your channel brother. Thank you ❤️

cool guy!!! easy to understand... i took CCNA modules 8 years ago... i need refresher, and im so lucky to find your channel.... youre awesome!!!!!

My dude, I’m learning so much from this series. Thank you so much for these videos. I came in two days ago barely understanding networking and already feel much more comfortable studying for the CCNA exam! Also, thanks to another of your videos I’ve started applying for a few help desk positions to get my feet wet in tech. You’re awesome!

Such easy to understand explanations. Thanks! Currently doing the Google IT cert as a refresher. Hoping to continue on to CompTIA A+ and maybe CCNA after that. Trying to absorb as much as possible!

-Hi, thanks for taking this free course ... !!! -I started as an electronics and automation technician and evolved into IT in my career where I took care of the Data Center of the Control Tower of the largest airport in the south emisferio, as well as the radios, radars and windows and Linux servers and the network there for almost 20 years, and now living here in Brazil I am stopping to immigrate to Canada. -It's funny how things have evolved and in 2010 when I started creating servers to monitor the networks of different systems via SNMP and map them in Nagios at the time I needed two Xeon servers one with Nagios and the other with databases, and several desktops as probes of the networks I monitored, apart from Arduinos with NICs that I programmed to read the status LEDs of the equipment and the servers outside temperature and energy and send it all to the SNMP Nagios server that I did on Linux at the time. -It's ridiculous to see that nowadays there are complete servers \ probes on a Raspberry Pi with NEMS Linux running on it, imagine in 10 years we changed two Xeon servers that cost 100 times more than a Raspberry 40 dollars to do the same function, which great for NOC Eng. how we can work and improve. -Thanks to god, the standards allowed this evolution of technologies. -As for the fight between the OSI and TCP / IP models for the new standard that Cisco adopted they simply made it official what they already did, in the Packet Tracer themselves they kind of played the upper layers in one, which is where the developers work , and it's even how companies work by dividing the professionals from the layers below and those from above. -Now who works with the most basic programming as in Arduino or the new devices like it, where the well cross protocols programmed in C ++ or in IOT devices need the differentiation of the layers above. -As well as a Good NOC Engineer knowing better what happens in the highest layers, you can discuss better with an analyst who for example may have programmed your application imagining infinite band or a security specialist who will work with Firewalls needs to know the layers above better and subdivided, or better understand the Headers of your traffickers to do a better trobleshooting, ok, but the vast majority of NOCs do not simply classify the problems as Layer 7, now 5. -I still think about OSI, because it was as I learned but I understand why they changed the model for the test. -Now studying for certifications I realize that much of the knowledge I had at the time was self-taught but things were always lacking that when I study for CCNA I realize that things were missing, and now I decided to take both my CCNA the CompTia Linux + and the certification of VMware and CCNP Data Center in a few years. -Alias ​​now that the microsoft System has Linux incorporated, will the CompTia and LPIC certifications be separated due to these new paths that microsoft wants to follow ...? -Which of the two certifications is better in my case CompTia Linux + or LPIC-1 ...? -Thanks for the videos please continue you and David ... !!!

You're amazing..just love it❤

Chuck, really appreciate your delivery of this content, you make it very easy to understand thank you!

Damm!!! This guy is a networking god and his teaching is very clear

I want to learn more about network and I think it's so hard, but I think now I'm in love with it . I'm thankful to you thanks for your effort. I really do enjoy watching your videos.

This is one of the best content i watched for years. Thank you !

Thank you so much, this great! Really appreciate your explanation for someone starting in the network space

Hi, Chuck! Thank you for sharing this course content, for free! I'm a programmer at heart, but I'm wanting to shift my career in IT, and these videos helped a lot. Amazing work!

These videos are golden. Thank you for being a super entertaining teacher!!

I was in the process of doing courses 10 years ago to become a network engineer, but I dropped out and decided to become a pilot instead - big mistake.. I hate it. You've re-sparked my interest and love of computers again...

Thorough explanation. Thanks.

You're awesome man, thank you for all your context. My professor said he disliked something about you and my whole entire class and I got at him! lol You're supported man!

You're awesome man! Just found this channel. Love the info and your enthusiasm/voice

Wow am so amazed with ur teaching ❤

You are amazing! I adore to watch your videos. Thank you very much for everything what you do for us!

OMG Chuck you have saved the day for me man. I was struggling to relate to the traditional tutor and there came your video so I thought why not give it a go. So easy to understand and relate to a fellow gamer. Thank you so much.

I swear I smiled the entire time watching this video! You made it so easy to understand, thanks

Thank you for always giving me the perfect answers to my questions!!

Excellent stuff! Good for you, bud, taking the time and doing it right! Great job!

you rock chuck! yes you rock! the way you are teaching is straight injecting in my mind! your the best I have learned a lot from you. Thanks keep up the good work brother

I took the 1st letters and say them all as 1 word PDNTSPA, saved me in networking exams :)

I love this guy how he explain. The Best channel ever...

I LOVE THIS COURSE JUST BECAUSE OF YOU! THANKS!

Great nugget! Clear and concise. Thanks!

I'd say Network Chuck nearly cried (probably from relief) after taking a sip of that coffee towards the end!

many thanks for this video chuck!

I enjoy so much your way, always on point 🙏