OSI Model: A Practical Perspective - Networking Fundamentals - Lesson 2a
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- เผยแพร่เมื่อ 18 พ.ค. 2024
- Module 1 of the Networking Fundamentals course will illustrate the core of networking: How data moves through the Internet. The foundation of that is understanding the OSI model.
But this isn't about mere memorization, instead we are going to look at the underlying goals of each layer of the OSI model, and how it contributes to the over all goal of networking: Moving data between hosts.
Before watching this video, watch the first videos in the series:
Lesson 1a - Network Devices: Hosts, IP Addresses, Networks:
• Network Devices - Host...
Lesson 1b - Network Devices: Repeaters, Hubs, Switches, Routers
• Hub, Bridge, Switch, R...
This lesson is a free lesson from my new course on Networking Fundamentals. The first module of this course is meant to teach you everything you need to know to understand how packets move through a network. All the lessons for the first module will be released for free here on TH-cam:
=== Networking Fundamentals - Module 1 ===
Lesson 1 - Network Devices
Part 1: • Network Devices - Host...
Part 2: • Hub, Bridge, Switch, R...
Lesson 2 - OSI Model
Part 1: • OSI Model: A Practical...
Part 2: • OSI Model: A Practical...
Lesson 3 - Everything Hosts to do speak on the Internet
Part 1: • Everything Hosts do to...
Part 2: • Everything Hosts do to...
Lesson 4 - Everything Switches do to facilitate communication
Part 1: • Everything Switches do...
Part 2: • Everything Switches do...
Lesson 5 - Everything Routers do to facilitate communication
Part 1: • Everything Routers do ...
Part 2: • Everything Routers do ...
Part 3: • Router Hierarchies and...
Lesson 6 - Networking Protocols
- • Network Protocols - AR...
- ARP, FTP, SMTP, HTTP, SSL, TLS, HTTPS, DNS, DHCP
- Four items MUST be configured for Internet Connectivity
Lesson 7 - How Data moves through the Internet
- • How Data moves through...
- Interview question: What happens when you type "site.com" into a web browser?
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If you enjoyed this content, then please tell one other person about this series. At the end of the day, sharing this content is the best way you can thank me and return the favor for this free content. You can get free Internet Points (Karma, Likes, etc) by simply sharing this content across social media communities. =) Thank you.
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🖧 Full Networking Fundamentals series (Module 1 - all FREE):
• Networking Fundamentals
📇 Details about the Full Networking Fundamentals Course:
www.practicalnetworking.net/i...
📜 Studying for your CCNA?
www.practicalnetworking.net/i...
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#networking #ccna #network #osi #switches #routers - วิทยาศาสตร์และเทคโนโลยี
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_--- Original Comment below: ---_
*Full Course Status: Wait and See.*
Hopefully you've come to realize that I put _a lot_ of effort into the content I create. I'm not a course creator that will simply turn on the screen recording and ramble, then call that teaching. I meticulously plan _every_ module and lesson to _maximize the learning and value_ for the student.
To that end, it takes me a while to put together courses. If I'm going to dedicate the time, resources, and energy to putting this full course together, I need to know that there is enough interest in the full course. I'm rating that by how wide a reach this series achieves.
*If you are interested in seeing the full course developed, then the best way to bring that to fruition is to spread the word about this content* . By itself it already conveys _a lot_ of value. So sharing even just the 7 lessons (13 videos) in this series will surely help whoever you share it with.
Plus ... many online communities would greatly benefit from these videos. Think of all the Internet points you could acquire if you shared this series (karma, likes, follows, etc.) 😉
Use this link to share the full series:
th-cam.com/play/PLIFyRwBY_4bRLmKfP1KnZA6rZbRHtxmXi.html
Also, if you share it on Twitter or LinkedIn, please tag me =):
twitter.com/ed_pracnet/
www.linkedin.com/in/eharmoush/
We do inevitably 🤓🤓🤓
Definitely
@@elvismimbayuniseh3978 Thank you =)
@@sgcatr Thank you =)
bro is this course still under construction ?
You, sir, are a networking hero. This requires some serious skills to be able to explain things this clearly as you do. Keep the great videos coming, thanks!
Glad you are enjoying them =)
Every one should watch jeremys it lab along with this channel
Agree!
I love that you explain this without overcomplicating it with too much technical jargon. I'm studying for a networking exam and this series is really helping.
How did the exam go =)
Just like any popular web series, I have been binge watching your videos since yesterday. Thanks to TH-cam algorithm that I landed on your channel and immediately subscribed. The way you present the hitherto complex topics in such a lucid and comprehensible manner is mind boggling !! I mean in last 24 hours itself, just by binge watching your videos, my knowledge on networking fundamentals and the OSI model has shot up by multiple notches. It's incredible !! Not a single tutor in my career's last 10 years had explained the concepts in such an eloquent manner (that too free). Please accept my GRAND SALUTE and continue to do the awesome work !! 😇
My good sir I’m getting into cybersecurity w the google certificate and everyone says having a strong foundation of networking is key and will set you apart. These videos are 10/10 informative and very easy to follow. Your hard work is THOROUGHLY appreciated!
best example of why layer 3 ip addresses and layer 2 mac addresses exist that i've seen
i finally understand the concept, thank you
I remember reading a quote that said "The true mark of an intelligent person is how they explain stuff." and hearing the different systems of our body analogy did that for me. It explained the physicality of networking layers so nicely for me. You are doing great work, sir!
no way i surfed the whole internet trying to find an explanation to the osi model until i found this thing you re litteraly a pro thx a lot ❤️
I am preparing for the CCNA. I can finally move forward with understanding. This is the best explanation of the TCP/IP, OSI Model I've come across. Some things now finally make sense. I excited about the rest of your videos. I feel confident now about the course.
Thank you, Alecia. Glad you enjoyed this series =)
Hi, did you pass the exam?
It's the first time I have clearly understood the OSI model.
Excellent explanations and illustrations.
Looking forward to the complete networking course!
Explained this so well. Best so far!
Einstein said ‘if you can’t simply explain it , than you don’t fully understand it’ … you are the epitome of this! ..
Meaning your a master at this, your understanding is so potent your so good that you simply explained things lol
That in fact is the quote I use as my mission statement on my About page of my blog =). pracnet.net/about
Cheers friend, thanks for the encouragement. =)
This is one of the coolest, simplest and logical explanation of how OSI works. There are tones and tones of videos on YT but unfortunately majority stuff is just "theory and conceptual" level. This video on the other hand explains everything practically and the way it should be. Great work.
Out of necessity in this world we live in full of computers, I've been trying to wrap my head around computer networking, watching any and all videos I can (whenever time permits), and yours has been the easiest to understand and most organized. Thank you!
Glad these videos have helped you =). Cheers !
There is no one explains these like you do. "Underappreciated Channel ! "
Thank you, Ethem. I appreciate the kind comment.
Some of the best lessons on networking I've seen on youtube. Excellent job!
Thank you =). Glad you enjoy them!
Again, baffled by how excellent these videos are. Way to go!
This entire playlist is a godsend! thank you.
I have been watching several videos to understand this concept and I must confess yours has nailed it. I can't wait to watch the part two of the OSI model
The best explaination of the OSI model i found so far. Thank you
over ten years ago as a student, I have must gone to school far from home about 20km to learn Network. I remember this module take 1 week to learn, and now I just watch it in 30 minutes to understand what I need. Thanks
FOr what it's worth I was in the same boat. This series in 90~ minutes teaches what took me 2-3 years to learn as a Networking Admin.
same here man
best explanation of OSI Model on internet
I am watching this again, like new wine, its evergreen. Thank you.
Your explanation of how computer networks work is so clear. Thank you.
This is the BEST explanation of the OSI model I have ever seen. So many people don't explain why it is practical to use it as a model for networking, so it's just rote memorization of weird facts that don't' have any context. Especially when you get to the upper layers. You're a very good teacher and actually made this comprehensible, and INTERESTING, and not just a bunch of facts.
I can't thank you enough. I am taking a Google IT Support Certification Course; unfortunately, the material they provide is almost useless compared to how you explain these concepts. Thank you again for all your hard work.
I have watched a few courses about Networking on TH-cam and you are by far the best when it comes to delivery and explanation. You made others look like they don’t really have an in-depth practical concept and understanding of how networking works. Thank you for sharing your knowledge. I wish you thought Linux, AWS, Bash, Kubernetes and every other subject directed towards the path of Cloud engineering/DevOps. Thanks again!
These are the best videos that explain networking I've seen. Thank you for this, keep it up.
I have taken so many network courses, but this is definitely the best
Possibly the best teacher i've ever seen on any topic. You explain things really, really well. Amazing stuff.
I was looking forward to this video after watching a number of your other videos and you did not disappoint. Fabulous, easy to understand.
I stumbled across Practical Networking yesterday while looking for information on how VLANs work. I was so impressed by how well you broke it down into simple concepts with illustrative animations that I've subscribed and started watching these fundamentals videos to get a proper grounding in networking. They are brilliant, thank you.
This is the best explanation of headers. I’ve know fully understand what I’ve been struggling with for the past year about MAC and IP addresses
Best videos I've seen on this subject so far, you have a rare talent. Thank you 🙌🙌🙌
You are making things easier for us Be blessed
This series is jaw dropping in its simplicity, insight and usefulness. Many, MANY, thanks.
You're very welcome, Mr Didaxi =)
Thankyou, your illustration of the difference between the function of IP address and Mac address is amazing
Thank you for this tutorial. GOD bless you. Amen
Thank you for explaining these terms so well... you're awesome
You are a LEGEND. Thank you so much.
Hey, this is wonderful. Thank you so much for creating it and sharing for free! I listen while I'm driving, and it's REALLY helpful!!
Sir, you are a great teacher and i really appreciate you for your efforts. thank you.
Thank you Sooooo much!!!! This is the only video I understand, Thank God I found your video!! ❤😊
This makes networking make so much sense... thank you.
No words to explain how simply you have explained this. Appreciating your passion and efforts.
Glad you've enjoyed these, Sebastian =). Hope you enjoy the rest of the series as well.
th-cam.com/play/PLIFyRwBY_4bRLmKfP1KnZA6rZbRHtxmXi.html
I'm taking an ethical Hacking course and I needed these videos!!
Congratulations on your videos. You do a wonderful job explaining everything in a clear and very well organized manner. Well done! Looking forward to seeing more :)
Thanks Antonio. I appreciate the kind words =)
amazing course , i cant belive this is free.
love it! so clearly explained!
This guy is awesome, can’t describe any word with his great explanation
Thank you for this water clear video!!!
Amazing simple explanation. Thank you sir. God bless you
Best OSI model description!
BEST EXPLANATION AVAILABLE ON THE INTERNET !
Thank you so much! I’ve been bumping my head where MAC addresses and IP addresses interact and what layer 2 switches do with both. This cleared it up for me. Great video! I will keep watching as this helps me with my job ❤
Truly appreciate simple detailed explanations.
You're very welcome, Elene =)
Nice job on the infographics. Very clear explanation, thanks!
You're welcome!
As usual, your explanations are great! Thank you very much!
You're welcome, Burim. =) Glad you like them!
Thanks you for all you dedication
You explain things so well that a little child would understand too and remember it. Thank you
The video series is one of the best I've seen so far! In all my college years and working years, I've never been able to understand these concepts as clearly as I understand them now. Your videos are more educational than most Engineering courses that cover these concepts. Will definitely recommend this series to everyone who is studying networking. Also, this is the first time I'm hooked to an educational series and binge-watch these like I used to with a Netflix series! Thank you so much for the brilliant illustrations and explanations.
YEd, you are just the best, you have things much easier for me. God bless you
Thank you for explaining it so well!!
Great work sir!!!! you explain very clearly that anyone can understand......... Thank you.
when i thought i know the OSI model and you just blow me away with really better understanding . Now i do not have to memorized this again with bogus acronyms . I can now explain to this anyone. Thank you Ed
Explaining it to someone else is always my goal since I started my website 5+ years ago =). Glad to hear this video has empowered you to teach someone else =)
Amazing explanation thank you!
What does OSI mean?
You’re a GREAT instructor! Truly. If there’s one thing you could improve upon is making sure you ALWAYS introduce an acronym only after you have spoken it’s full form, and the gradually shift in your speech to the use of the acronym alone, thus teaching the acronym as you’re teaching your subject.
That's a fair point. I make more of an effort to introduce the words that make up the acronyms when they are more relevant (you'll see this in Lesson 6 if you continue the series).
In the case of OSI... the name is somewhat arbitrary. Open Systems Interconnect -- it's simply the name of the group which was trying to establish the standard. The letters don't actually mean anything.
Thank you again for your hard work !
you are an amazing teacher!!
Hello Sir, I have never seen such videos like these. Nobody else could explain IT stuff easier. Many thanks for your great work. From Viet Nam.
Hi Thanh. Glad you're enjoying these videos =). Thank you for the kind words!
You did a beautiful jobs at explaining this. Thanks 🙏
Finally a video that explains what devices sit where in the model. Also I have watched so many videos on this and never once have they explained the MAC address data transport part showing how the mac address is changed per hop so that helped explain a lot as well, thank you for this video.
You're very welcome, Zekoo. Glad you enjoyed it.
Sir you are a Networking Hero i mean it, the more you explain it, the more i am getting interested in this topic, excellent, i appreciate it, thanks a lot.
Best explanation till now.
To be honest i have 4 years of Information Technology college university degree and i have never looked at the aspect you explain at time:10:20 the way you explain it...everything makes more sense to me now....thanks a bunch 🎉🎉
Glad this helped, Vially =). Please help me spread the word about this video!
@@PracticalNetworking of course I'll do so
@@viallymboma9874 Thank you for your support!
😊thank you I've been trying to figure all this stuff and you're an amazing teacher kudos 🎉
thank you for your excellent explanation sir
great work brother. really great stuff with excellent explanation
You are amazing!! I don't know if there are words to describe how much I appreciate what you have done to explain this subject. Thank you and God bless you!
Thank you, Ferhana. Kind of you to say.
Could you do me a favor? Do you mind sharing this video on Linked In, Reddit, Twitter, Facebook, or any other social media you use? As an independent creator, that would be an _enormous_ help, and I would appreciate it _greatly_ .
the best explanation got till ever now
You have the best way of describing this! Thank you networking guru!! ❤
Thank goodness for this video, you just made this so easy to understand.
How does the router-1 with the MAC: b3b3 know the MAC: c4c4 of the router-2 to mount the
L2 header?
That is answered in Lesson 5b of the series =)., But I'd recommend to continue watching in order.
@@PracticalNetworking Thank you very much, I watched the class and as always amazing the didactic. I'm learning a lot from your classes. Thanks for sharing your knowledge.
great series: well structured explanation, detailed, visual. thanks. will be waiting for all modules.
Glad you've enjoyed this content, Max =). The full module 1 playlist is here: th-cam.com/play/PLIFyRwBY_4bRLmKfP1KnZA6rZbRHtxmXi.html
This man is awesome!!!
Fantastic, thanks for clarifying my questions that are been there from years.
Glad it was helpful, Ram =)
Yep, your presentation and explanation style is absolutely brilliant 10/10. Thanks for making the complicated easy,
I've been taking the Google Cybersecurity course on Coursera, and this series is more in depth than that is. You do such a great job at breaking everything down even further so that I not only grasp the overlying concepts, but understand it on a fundamental level without making it seem tedious. I look back on notes I took in that and see a whole lot that the Coursera course didn't cover. Really glad I found this.
haha me too! Im also doing the same course and came across these videos hoping to understand networks better. Fantastic set of vidoes!
Same here 😂😅
Honestly coursera is completely mixing me up 😢 thanks to your videos it all makes sense now SMH 😊
These lessons are really amazing. Especially if you want to prepare to study for the CCNA.
sooo true broo, anyone who wants to go for CCNA should understand network fundamentals and this is the best one i have seen
THE BEST explanation so far. Thank you.
You're very welcome =)
Excellent video man! It couldn't get clearer than this. I enjoyed watching the video.
So glad you enjoyed it, Martin!
this just perfect! this is just amazing!
I am refreshing my networking knowledge to prepare for a cyber security course and this is the best playlist i ever needed. Thanks for the free teachings.
Thank you Shankar. Glad you enjoyed this content. If you're interested in Cyber Security, you might also be interested in my deep dive TLS/SSL course: classes.pracnet.net/courses/practical-tls
Very well explained.
The best video I have seen on OSI model
Cheers =) Thanks for the kind note, Rosh.
I am just blown away!!!
I'll never stop being amazed by the clarity and simplicity of your explanations when I watch your videos, no matter how many times I watch them. for real . i hope one day that I could meet you. Thanks, and May God bless you for ever ❤
I am taking a network administration course and you explained things better in 30 mins than my professor did in a week. Brilliant explanations. Thank you
Glad this is helping make sense of it =). Good luck w/ the Network Administration course =)
You really deserve a reward for such information, God bless you.
Thank you for saying so =)
You teach so well