THIS is just a goldmind. When ppl say "yea, jus go watch youtube." they talking about watch these kinda guys, Dude thank you u really peaked my interest in these videos and in networking in general. Keep up the videos m8.
This playlist is a brilliant internet diamond: state-of-the-art quality video, very didactic flow, prime material content made simple, making abstract concepts turned from boring into fun and understandable. I truly appreciate your dedication, love and time put into this. The rare magic of teaching concepts to newbies or tech-savvy professionals was accomplished! And a fun reference to IT Crowd is just the cherry of the cake!! Good job! ❤️📺
My guesses on the 11:59 quiz: TCP/IP applications (Protocols): FTP(File Transfer Protocol), SMTP(Simple Mail Transfer Protocol), Telnet - Application layer; JPEG, MPEG, TIFF, GIF - Presentation layer; Service request, Session Control Protocol (SCP) - Session layer; Flow Control - Transport layer; Application layer: End-user services like web browsing and file transfer Transport layer: checks and fixes errors, then delivers data error-free Network layer: routers work at this level, and decide how and where traffic is forwarded along a path Physical layer: Hardware for sending/receiving data on a medium hope I didn't misunderstand something, if did please correct me.
I am currently making a career switch to IT. i greatly appreciate your good explanations with short catchy videos. i have already learnt so much more. thank you!
6:33 My answer is: The transport layer is responsible for the ports, which manage the flow of data going through the ports. If an application is using too much bandwidth, we can control its data flow in this layer without having to interrupt its process in the application layer.
Well thought-out, well done. You might also be interested to have a brief look at a technology called 'Quality of Service' (just a brief look, it is quite complicated)
Thanks for the great vid, man! I'm already an Electronics and Comms Engineer and is trying to revive and build my knowledge regarding networking. These vids help me a lot!
The art of teaching is a science craft that only a few have mastered. You are one of them. I have been watching your videos for hours, one video after the other. Gosh, they are brilliant. The words are very descriptive in the simplest of languages ever woven together. I wished I had these videos when I was learning in school. Super helpful. Thank you. Teaching is both an art and a science 🎨📚, and only a few truly master it. You are one of those exceptional individuals. I’ve spent hours watching your videos, one after another, and they are simply brilliant 🌟. Your explanations are incredibly descriptive, using the simplest language woven together seamlessly. I only wish I had access to these videos when I was in school 🎓; they are immensely helpful. Thank you! 🙏
Keep up the Great Videos! I just applied for a Junior Networking job at my office after doing software development/testing for the last 5 years. These videos have helped to understand the Network side and be prepared for the upcoming job!! Take my Like, My comment and my subscription!! Well deserved!!
Respected sir this is Manoj from india. Your way of explanation and simplicity i never experienced in my college. With a huge respect my eyes are dropping tears of joy.
im doing computer science degree specialized in network tech and cybersecurity and this series supported my revision for first sem networking exam last year.
Thanks for these. I have been on a networking hunt. I have some experience with MLOps, and it was a mess trying to understanding Networking concepts in K8, as well as REST APIs. This playlist is life-saver. I am curious to expand my Networking knowledge more. Thanks again.
I am starting my last semester. The whole semester is on networking. I cannot wrap my head aroumd learning from the textbook, so I am counting on you to get me through!!! Thank you for this and the Patreon content.
Thanks for such great explanation of the concepts. I thought these were very difficult to understand. But you have made them real simple and easy to follow.
I've found these videos you made it quite helpful, once again i'm appreciate for it. It's accepted by everyone that is quite hard to find these kind of highly helpful materials. Expression is fluent, every stranger term has got a detailed explanation. Also, god should bless you as everyone does wish. Cheerz!
Love this, just backed you on Patreon - more than a fair deal! Thank you for compiling these. One thing; as a total newcomer, I was a bit confused about the mention of "layer 1" or "layer 2", even though this was specifically mentioned in the beginning. Would've been good to have these a bit more explained in this context.
Great video and a great series. Currently studying electrical engineering and this topic is a new elective for us this year, so cheers for keeping me ahead of the game so far! Keep up the good content, will definitely be sharing with all other students.
Been a detective for the past 3 years. I want to go back to school for information security. Gonna watch all of these and take notes prior to getting back into school.
Application is closer to the end user, Transport delivers data in an error free way, network decides how traffic is forwarded and physical is the hardware to actually send the data over a medium
Hi hope your are fine Sir, I enjoyed when youu send Analogy and mad a good one, it will stick better in my head, cause I had a better idea of the mailing than OSI. Thanks
Hi. Thanks for the effort. I just had a comment regarding the answers for the questions on the suggested website. We are required to be a member of Network's Patreon at $2 or more. Not happy with that.
way above my head in understanding the material here. I'd like to know why it takes these steps for data to get to the destination host, then I think I would understand the description better.
This video also mentions the therm I/o Input/Output unoffically it's explained similarly. how much is going in and how much is going out... the sending and receiving of data and so on...
It can take revision. Just stick with it, you'll get there. Maybe look at some videos from other creators too. Some times we just need to hear a concept explained differently, and suddenly it all makes sense
Sir, with deep respect I would like to tell you that they way you explain these things is just awesome. I would like to talk to you about it all. If you got little time please let me know. I will wait for your response. There are two outcomes : either you reply or you do not reply. I am really hopeful that you will take atleast a minute to talk to me. Waiting eagerly. Thanks for these videos.
@Bharat Sharma Alternative solution - Address it at the application layer. Switch the application for another, less data hungry one. Or if it's an in-house application, optimize it.
You would need to increase bandwidth at the physical layer, so both compute and the switch ports would need to be at higher bandwidth. eg. move from 1gig to 10gig connectivity
Have you heard about tls transport layer security or tls handshake can you tell is it in osi model's transport or its something entirely else pls explain ,good session although
My guess is that the high-bandwidth application requires a significant amount of data transfer, which increases the time taken at the Transport Layer. This layer is responsible for multiplexing, and as a result, it can delay the transmission of data segments from other applications
I don't understand this at all. 13:05: he says that the session is managed by the transport layer. Is the session layer not for dealing with things on the level of the session?
15:23 If the Destination MAC address of the Router is 2A:34:D2:11:23:A1, Shouldn't be source MAC address be the same at the time 15:33? I Don't understand why there is 12:D3:45:AC:12:22. There is only one router.
There is a different MAC per interface on the router. So the interface that the frame is received on has one MAC, while the interface that it's sent out of has an entirely different MAC
These tutorials are very insightful, thank you! I'm just kind of confused about how the layer 2 address of the frame doesn't change when it goes through the switch. Is it because the logical link between the two endpoints are created by the switch?
I am confused so the transport takes care of the transport using udp or tcp protocol. With the example of port 80 it knows it needs to go thru the webserver. It adds a header The network makes sure it know it route by adding an source and destination ip. Adds it as a header Together they make sure the data is send to the right location? The data link makes sure it is in the right lan segment adding another header and a trailer correcting errors? Because it may hop from router to router the mac adress can change but the ip stays the same
@@trbgraphics5557 well I didn't pursue it. Just wanted to explore some stuff, computer related of course. Right now learning Java in a bit detail. Android programming.
Transport layer breaks down app data into segments/datagrams, but I am confused if network layer and data link layer function the same, like data link layer breaks down packets into many frames , so one packet consists of more than one frame? Thank you!
Usually just the transport layer will do this. Sometimes a packet (layer 3) will need to be fragmented in to smaller packets, but we want to avoid this.
THIS is just a goldmind. When ppl say "yea, jus go watch youtube." they talking about watch these kinda guys,
Dude thank you u really peaked my interest in these videos and in networking in general. Keep up the videos m8.
More to come!
Umm, do you mean a goldmine? There's no such thing as a goldmind.
This playlist is a brilliant internet diamond: state-of-the-art quality video, very didactic flow, prime material content made simple, making abstract concepts turned from boring into fun and understandable. I truly appreciate your dedication, love and time put into this. The rare magic of teaching concepts to newbies or tech-savvy professionals was accomplished! And a fun reference to IT Crowd is just the cherry of the cake!! Good job! ❤️📺
My guesses on the 11:59 quiz:
TCP/IP applications (Protocols): FTP(File Transfer Protocol), SMTP(Simple Mail Transfer Protocol), Telnet - Application layer;
JPEG, MPEG, TIFF, GIF - Presentation layer;
Service request, Session Control Protocol (SCP) - Session layer;
Flow Control - Transport layer;
Application layer: End-user services like web browsing and file transfer
Transport layer: checks and fixes errors, then delivers data error-free
Network layer: routers work at this level, and decide how and where traffic is forwarded along a path
Physical layer: Hardware for sending/receiving data on a medium
hope I didn't misunderstand something, if did please correct me.
Correction: Data Link layer: checks and fixes errors, then delivers data error-free
I am currently making a career switch to IT. i greatly appreciate your good explanations with short catchy videos. i have already learnt so much more. thank you!
6:33
My answer is:
The transport layer is responsible for the ports, which manage the flow of data going through the ports. If an application is using too much bandwidth, we can control its data flow in this layer without having to interrupt its process in the application layer.
Well thought-out, well done.
You might also be interested to have a brief look at a technology called 'Quality of Service' (just a brief look, it is quite complicated)
@@NetworkDirection Thanks for the tidbit.
Why not the netowrk layer?
You mean,through multiplexing and dividing data,into smaller chuncks and using proper headers?
Simply stumbled across this page and I am a 100% contributing to your patreon. You are a GIFT from above.
Thank you! You're the best!
Thanks for the great vid, man! I'm already an Electronics and Comms Engineer and is trying to revive and build my knowledge regarding networking. These vids help me a lot!
The art of teaching is a science craft that only a few have mastered. You are one of them. I have been watching your videos for hours, one video after the other. Gosh, they are brilliant. The words are very descriptive in the simplest of languages ever woven together. I wished I had these videos when I was learning in school. Super helpful. Thank you. Teaching is both an art and a science 🎨📚, and only a few truly master it. You are one of those exceptional individuals. I’ve spent hours watching your videos, one after another, and they are simply brilliant 🌟. Your explanations are incredibly descriptive, using the simplest language woven together seamlessly. I only wish I had access to these videos when I was in school 🎓; they are immensely helpful. Thank you! 🙏
Thank you for these videos. I was struggling in class because my teacher goes off topic a lot. But this solidified it for me.
Glad to help
Best understanding of encapsulation. This is one of the best videos.
Thanks!
This is the best way to teach. Great graphics and illustrations. Keep up the good work.
Thank you so much for sharing this feedback!
Keep up the Great Videos! I just applied for a Junior Networking job at my office after doing software development/testing for the last 5 years. These videos have helped to understand the Network side and be prepared for the upcoming job!! Take my Like, My comment and my subscription!! Well deserved!!
Your videos are how I wish every other educational video would be.
That's kind of you to say, thank y ou
Your better then my network professor. You explain it very well can’t wait for the next one!
Thanks!
Just a few more days until the next one
Respected sir this is Manoj from india.
Your way of explanation and simplicity i never experienced in my college. With a huge respect my eyes are dropping tears of joy.
That's a huge compliment, thank you!
im doing computer science degree specialized in network tech and cybersecurity and this series supported my revision for first sem networking exam last year.
This video is pretty hard
Thanks for these. I have been on a networking hunt. I have some experience with MLOps, and it was a mess trying to understanding Networking concepts in K8, as well as REST APIs. This playlist is life-saver. I am curious to expand my Networking knowledge more. Thanks again.
I've already done CCNA1 but this is great to recap and I thoroughly enjoy your presentation style
Awesome, thank you! I am glad you enjoyed it!
I am starting my last semester. The whole semester is on networking. I cannot wrap my head aroumd learning from the textbook, so I am counting on you to get me through!!! Thank you for this and the Patreon content.
Thanks for such great explanation of the concepts. I thought these were very difficult to understand. But you have made them real simple and easy to follow.
Good to hear!
I've found these videos you made it quite helpful, once again i'm appreciate for it. It's accepted by everyone that is quite hard to find these kind of highly helpful materials. Expression is fluent, every stranger term has got a detailed explanation. Also, god should bless you as everyone does wish. Cheerz!
keep up the good work I am watching these before networkfundamentals class begins
Love this, just backed you on Patreon - more than a fair deal! Thank you for compiling these. One thing; as a total newcomer, I was a bit confused about the mention of "layer 1" or "layer 2", even though this was specifically mentioned in the beginning. Would've been good to have these a bit more explained in this context.
Great video and a great series.
Currently studying electrical engineering and this topic is a new elective for us this year, so cheers for keeping me ahead of the game so far!
Keep up the good content, will definitely be sharing with all other students.
Thanks Alan, I had no idea networking topics were used in electrical engineering.
What other network-ish topics do you need to cover?
Perfectly made for students like us. Hats off to the presentation skill that make me clear about the topic and now I can teach others too. Thank you!
amazing explaination . One of the best videos I have seen on this topic
Thanks very much! I'm glad this video was helpful!
Amazing lesson retainable and visual stimulating 😊
I really like the way that you simplify the information 👍🏼
Thanks, that's one of my goals when making these
Wow. I love your videos. Better than any lecture at university...
Wow, thank you!
I'm happy having you to teach me all this
Just bought the 2.00$ subscription, thank you for this work!
Thank you Jevster! We really appreciate your support!
Thank you for making these videos! Explanations are much better than in my university course!
Quiz answers here: networkdirection.net/labsandquizzes/quizzes/understandingosi/
The CCENT/CCNA study guide (affiliate):
click.linksynergy.com/link?id=RL4E*8CmbSY&offerid=145238.2445867&type=2&murl=http%3A%2F%2Fwww.ciscopress.com%2Ftitle%2F9781587205804
networkdirection.net/OSI+Model
networkdirection.net/Understanding+OSI
Been a detective for the past 3 years. I want to go back to school for information security. Gonna watch all of these and take notes prior to getting back into school.
Glad to help you on your journey
that intro LOL, best network tutorial in the history of youtube!!!!
Soo good to hear, thansk
Excellent, that's the example I was looking for ❤
Glad to help!
Application is closer to the end user, Transport delivers data in an error free way, network decides how traffic is forwarded and physical is the hardware to actually send the data over a medium
thank you - helped me alot in this lecture - i will revise the video again for more better understanding. Great work.
Thanks a lot for making these videos, I got to learn so much and I don't think I'll forget what I learned here.
Thanks Jayashree, thats great to hear!
Very well explained! Thank you.
Thank you!
When I start, I only want to know TCP/UPD protocol. But your course is amazing!! I like to watch more and more! Thank you!!!
This video really helped me solidify the OSI model into my memory. Please Do Not Throw Sausage Pizza Away!!!!!
You'll never forget it now :)
Looking at this makes you understand why there is a TCP/IP model.
When I found this video ,I knew I struck gold mine.
Thanks! That's a nice comment to start my day with
Finally, someone is explaining networking and I am awake.
Nice to hear it, thanks
Great work. Really enjoying these
These video series are just amazing 😊
Thanks
so thankful i found your channel! Thanks very much! 👊
Man, this is very comprehensible! Thanks a lot so far!
You're welcome
This makes so much sense thank you.
Excellent presentation. Thank you.
Glad you enjoyed it!
I always remember “All people seem to need data processing”
Superb! Love it. Thank you.
Thank you!
Thanks Mr , nice information !
Thank you for calling IT, have you tried turning off and on again. I love it! The IT crowd is amazing!
Most iconic IT quote on TV
Man I love your videos. Helps a lot in the college! Thanks you !!
You're welcome!
Great videos! Thank you very much!
I came to these videos to get info on
the basics for setting up a basic network for a quick job, and my brain is full of knowledge XD
Very helpful, thank you.
Hi hope your are fine Sir, I enjoyed when youu send Analogy and mad a good one, it will stick better in my head, cause I had a better idea of the mailing than OSI. Thanks
a lot of thanks to you buddy these are really in depth knowledge videos
So nice of you
Great videos, thanks.
You're welcome!
Thnx, as a computer sci major this pluses
Hi. Thanks for the effort. I just had a comment regarding the answers for the questions on the suggested website. We are required to be a member of Network's Patreon at $2 or more. Not happy with that.
way above my head in understanding the material here. I'd like to know why it takes these steps for data to get to the destination host, then I think I would understand the description better.
these steps are required so that the data can be safely and correctly sent to the reciever
Awesome so far!
Thank you! Cheers!
thank you so much for making these videos :)
Fantastic series! Thanks!
These videos are great! Thanks
Thanks!
Wonderful work...but hoped the answers for the little quiz was right in the vid
It would make the videos a bit too long. Some of these are quite long already
what is the answer of the question number 1 about "which layer should be addressed"
These videos are so useful
This video also mentions the therm I/o Input/Output unoffically it's explained similarly. how much is going in and how much is going out... the sending and receiving of data and so on...
Miga Arumai! Valthukkal!
thanks
excellent explanation
Thanks for this great video 😊
You're welcome
Can I get the answer of the question ? I need it on my activity . Please🙏❣
Can I get the answer of the question ? I need it on my activity . Please🙏❣
thank you! this really makes sense, and helps a lot
Glad it was helpful!
Absolutely fun. Thanks.
Glad you enjoyed it!
I lOVE your videos but can't afford the answers :( That suxs but ty for the wonderful videos. I have subscribed :)
love this!
Thanks!
Phantastic content! Im happy to support you on Patreon :)
Thank you!!!
thanks but still not getting it right in my head but I will revisit this video various times to understand OSI layers..
It can take revision. Just stick with it, you'll get there.
Maybe look at some videos from other creators too. Some times we just need to hear a concept explained differently, and suddenly it all makes sense
Sir, with deep respect I would like to tell you that they way you explain these things is just awesome. I would like to talk to you about it all. If you got little time please let me know. I will wait for your response. There are two outcomes : either you reply or you do not reply. I am really hopeful that you will take atleast a minute to talk to me. Waiting eagerly. Thanks for these videos.
Hi Amber, While I can't promise much, you're welcome to contact me at feedback@networkdirection.net
Great video❤️
6:25 - I would guess layer 3 as it involves QoS and load balancing
Answer to 6:33- Transport Layer
"I'll put the answers on the website of course"
>Goes to website...
Crap I'm broke, I guess no answers for me.
Yep, please don't pull that BS. Tell us the answers.
@Bharat Sharma
Alternative solution - Address it at the application layer. Switch the application for another, less data hungry one. Or if it's an in-house application, optimize it.
@Bharat Sharma
It is situational. In most situations, adding more bandwidth is cheaper.
You would need to increase bandwidth at the physical layer, so both compute and the switch ports would need to be at higher bandwidth. eg. move from 1gig to 10gig connectivity
Seriously, you don't have aprox 3 $ for this amazing content? I think you're saving your funds on the wrong end.
Have you heard about tls transport layer security or tls handshake can you tell is it in osi model's transport or its something entirely else pls explain ,good session although
Yes, I've heard of TLS. It's critical for security.
It's a much deeper topic. I have some videos on security if you'd like some of the basics
The intro got me!!!
My guess is that the high-bandwidth application requires a significant amount of data transfer, which increases the time taken at the Transport Layer. This layer is responsible for multiplexing, and as a result, it can delay the transmission of data segments from other applications
I don't understand this at all. 13:05: he says that the session is managed by the transport layer. Is the session layer not for dealing with things on the level of the session?
15:23 If the Destination MAC address of the Router is 2A:34:D2:11:23:A1, Shouldn't be source MAC address be the same at the time 15:33? I Don't understand why there is 12:D3:45:AC:12:22. There is only one router.
There is a different MAC per interface on the router.
So the interface that the frame is received on has one MAC, while the interface that it's sent out of has an entirely different MAC
6:23 What is the answer?
@Killerelmo 4 fuck you bro
Thanks for sharing.
How does the router know the mac address of the server? Does it request it from the server using its ip?
That's a good question! This uses a process called ARP, which is discussed in a later video
These tutorials are very insightful, thank you! I'm just kind of confused about how the layer 2 address of the frame doesn't change when it goes through the switch. Is it because the logical link between the two endpoints are created by the switch?
Answers to the quizzes are only available with a login? :(
Thanks for pointing this out, this is now fixed
@@NetworkDirection its not yet
I am confused so the transport takes care of the transport using udp or tcp protocol. With the example of port 80 it knows it needs to go thru the webserver. It adds a header
The network makes sure it know it route by adding an source and destination ip. Adds it as a header
Together they make sure the data is send to the right location?
The data link makes sure it is in the right lan segment adding another header and a trailer correcting errors?
Because it may hop from router to router the mac adress can change but the ip stays the same
Loved this video also 💖
Yeah this was an amazing series! How's your progress 2 years later? Just curious
@@trbgraphics5557 well I didn't pursue it. Just wanted to explore some stuff, computer related of course. Right now learning Java in a bit detail. Android programming.
@@Ari-118 Oh that's awesome. So what do you do as a main career? or are you a studying still
@@trbgraphics5557 no no, just a hobby.
Thank you!
Transport layer breaks down app data into segments/datagrams, but I am confused if network layer and data link layer function the same, like data link layer breaks down packets into many frames , so one packet consists of more than one frame? Thank you!
Usually just the transport layer will do this.
Sometimes a packet (layer 3) will need to be fragmented in to smaller packets, but we want to avoid this.