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How the OSI Model Works | Network Fundamentals Part 3 

Network Direction
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How the OSI Model Works | Network Fundamentals Part 3
The OSI Model Explained
Surely you've heard about the #OSI model. That's why you're here right?
Well, this is the right place for you! In this video we discuss models, and why they're used. We look into the physical, data link, network, transport, session, presentation, and application layers, and how they relate to the real world.
And finally, we look at an example. This shows how a web request flows through each of the layers.
For further study, I recommend:
CCENT/CCNA ICND1 100-105 Official Cert Guide
(affiliate) click.linksynergy.com/link?id...
networkdirection.net/OSI+Model
The answers to the quizzes in this video are found at:
networkdirection.net/Understa...
In part 4 we'll Look at how IP addresses work
Attribution
How to write address on the envelope correctly
• How to write address o...
The modern postage stamp
• The modern postage stamp
Disclaimer
This video contains affiliate links. I receive a small commission at no cost to you when you purchase using my link
#NetworkDirection
#CCNA
#CCENT

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19 май 2024

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Комментарии : 261   
@mr.e9778
@mr.e9778 4 года назад
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.
@NetworkDirection
@NetworkDirection 4 года назад
More to come!
@jay_wright_thats_right
@jay_wright_thats_right 3 месяца назад
Umm, do you mean a goldmine? There's no such thing as a goldmind.
@full_stack9810
@full_stack9810 4 года назад
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! ❤️📺
@felleg4737
@felleg4737 3 года назад
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.
@marcomagracia9840
@marcomagracia9840 4 года назад
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!
@thelandisgreen7499
@thelandisgreen7499 4 года назад
Simply stumbled across this page and I am a 100% contributing to your patreon. You are a GIFT from above.
@NetworkDirection
@NetworkDirection 4 года назад
Thank you! You're the best!
@KC-kp9nq
@KC-kp9nq Год назад
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!
@Vitalserum
@Vitalserum 4 года назад
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.
@kaanergunlu7836
@kaanergunlu7836 5 лет назад
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!
@Ali_Alhajji
@Ali_Alhajji 4 года назад
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.
@NetworkDirection
@NetworkDirection 4 года назад
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)
@steve.T.
@steve.T. 3 года назад
@@NetworkDirection Thanks for the tidbit.
@yuval1588
@yuval1588 4 дня назад
Why not the netowrk layer?
@itsjimbobgreen9467
@itsjimbobgreen9467 4 года назад
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!!
@binhbui6442
@binhbui6442 3 года назад
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!!!
@cegceg2783
@cegceg2783 2 года назад
Your videos are how I wish every other educational video would be.
@NetworkDirection
@NetworkDirection 2 года назад
That's kind of you to say, thank y ou
@Jacob.Morningstar
@Jacob.Morningstar 2 года назад
Thank you for these videos. I was struggling in class because my teacher goes off topic a lot. But this solidified it for me.
@NetworkDirection
@NetworkDirection 2 года назад
Glad to help
@shinimannan
@shinimannan 4 года назад
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.
@NetworkDirection
@NetworkDirection 4 года назад
Good to hear!
@micah167
@micah167 4 года назад
so thankful i found your channel! Thanks very much! 👊
@aleksandragloba2783
@aleksandragloba2783 4 года назад
Thank you for making these videos! Explanations are much better than in my university course!
@ROGMINGAMING
@ROGMINGAMING 3 года назад
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.
@NetworkDirection
@NetworkDirection 3 года назад
That's a huge compliment, thank you!
@matthewshelton1538
@matthewshelton1538 5 лет назад
keep up the good work I am watching these before networkfundamentals class begins
@DiamondCrystal
@DiamondCrystal 5 лет назад
I always remember “All people seem to need data processing”
@SuperStar-ho9pe
@SuperStar-ho9pe 5 лет назад
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!
@aadarshanand6340
@aadarshanand6340 3 года назад
When I found this video ,I knew I struck gold mine.
@NetworkDirection
@NetworkDirection 3 года назад
Thanks! That's a nice comment to start my day with
@NorthernSweetPea
@NorthernSweetPea 7 месяцев назад
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.
@shinnysud1
@shinnysud1 5 лет назад
Your better then my network professor. You explain it very well can’t wait for the next one!
@NetworkDirection
@NetworkDirection 5 лет назад
Thanks! Just a few more days until the next one
@francis2k488
@francis2k488 2 года назад
This is the best way to teach. Great graphics and illustrations. Keep up the good work.
@NetworkDirection
@NetworkDirection 2 года назад
Thank you so much for sharing this feedback!
@adnanhasan169
@adnanhasan169 3 года назад
thank you - helped me alot in this lecture - i will revise the video again for more better understanding. Great work.
@Jesamazin04
@Jesamazin04 Год назад
Best understanding of encapsulation. This is one of the best videos.
@NetworkDirection
@NetworkDirection Год назад
Thanks!
@0xg484
@0xg484 Год назад
I've already done CCNA1 but this is great to recap and I thoroughly enjoy your presentation style
@NetworkDirection
@NetworkDirection Год назад
Awesome, thank you! I am glad you enjoyed it!
@mutalahanyanosman910
@mutalahanyanosman910 Год назад
I'm happy having you to teach me all this
@TheBLACKWIDOW83
@TheBLACKWIDOW83 5 лет назад
Great work. Really enjoying these
@adnaneafifi1450
@adnaneafifi1450 2 года назад
I really like the way that you simplify the information 👍🏼
@NetworkDirection
@NetworkDirection 2 года назад
Thanks, that's one of my goals when making these
@alanspillane4231
@alanspillane4231 5 лет назад
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.
@NetworkDirection
@NetworkDirection 5 лет назад
Thanks Alan, I had no idea networking topics were used in electrical engineering. What other network-ish topics do you need to cover?
@luminoustech6477
@luminoustech6477 Год назад
Amazing lesson retainable and visual stimulating 😊
@patricksile
@patricksile 5 лет назад
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
@jshree744
@jshree744 3 года назад
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.
@NetworkDirection
@NetworkDirection 3 года назад
Thanks Jayashree, thats great to hear!
@gallerksee
@gallerksee 3 года назад
Man, this is very comprehensible! Thanks a lot so far!
@NetworkDirection
@NetworkDirection 3 года назад
You're welcome
@atraps7882
@atraps7882 3 года назад
im doing computer science degree specialized in network tech and cybersecurity and this series supported my revision for first sem networking exam last year.
@DungNguyen-jx4lr
@DungNguyen-jx4lr 3 года назад
This video is pretty hard
@jamesarden7554
@jamesarden7554 5 лет назад
thank you so much for making these videos :)
@jevster680
@jevster680 4 года назад
Just bought the 2.00$ subscription, thank you for this work!
@NetworkDirection
@NetworkDirection 4 года назад
Thank you Jevster! We really appreciate your support!
@kingmanzhang
@kingmanzhang 3 года назад
Fantastic series! Thanks!
@AvantGrade
@AvantGrade 2 года назад
Excellent, that's the example I was looking for ❤
@NetworkDirection
@NetworkDirection 2 года назад
Glad to help!
@Jazzadrin
@Jazzadrin 2 года назад
This video really helped me solidify the OSI model into my memory. Please Do Not Throw Sausage Pizza Away!!!!!
@NetworkDirection
@NetworkDirection 2 года назад
You'll never forget it now :)
@Khalid-kp1mu
@Khalid-kp1mu 2 года назад
Finally, someone is explaining networking and I am awake.
@NetworkDirection
@NetworkDirection 2 года назад
Nice to hear it, thanks
@dasmalas9960
@dasmalas9960 3 года назад
Man I love your videos. Helps a lot in the college! Thanks you !!
@NetworkDirection
@NetworkDirection 3 года назад
You're welcome!
@Jdp313
@Jdp313 2 года назад
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.
@NetworkDirection
@NetworkDirection 2 года назад
Glad to help you on your journey
@EricMurdoch
@EricMurdoch 6 месяцев назад
This makes so much sense thank you.
@TopNotch770
@TopNotch770 Год назад
Great videos! Thank you very much!
@srik006
@srik006 3 года назад
amazing explaination . One of the best videos I have seen on this topic
@NetworkDirection
@NetworkDirection 3 года назад
Thanks very much! I'm glad this video was helpful!
@gehacktetYKzZY
@gehacktetYKzZY 2 года назад
Very well explained! Thank you.
@NetworkDirection
@NetworkDirection 2 года назад
Thank you!
@j.wilmararcila4150
@j.wilmararcila4150 Год назад
Thanks Mr , nice information !
@JTuam101
@JTuam101 2 года назад
that intro LOL, best network tutorial in the history of youtube!!!!
@NetworkDirection
@NetworkDirection 2 года назад
Soo good to hear, thansk
@siddharthasekharkole2309
@siddharthasekharkole2309 4 года назад
a lot of thanks to you buddy these are really in depth knowledge videos
@NetworkDirection
@NetworkDirection 4 года назад
So nice of you
@liluna6731
@liluna6731 4 года назад
Thnx, as a computer sci major this pluses
@alexramsey4618
@alexramsey4618 2 года назад
Excellent presentation. Thank you.
@NetworkDirection
@NetworkDirection 2 года назад
Glad you enjoyed it!
@zlatkozeco7951
@zlatkozeco7951 3 года назад
These video series are just amazing 😊
@NetworkDirection
@NetworkDirection 3 года назад
Thanks
@KenSherman
@KenSherman 3 года назад
Looking at this makes you understand why there is a TCP/IP model.
@stephengoh5456
@stephengoh5456 3 года назад
Superb! Love it. Thank you.
@NetworkDirection
@NetworkDirection 3 года назад
Thank you!
@christopheroluwabunmi1230
@christopheroluwabunmi1230 4 года назад
Thanks for sharing.
@childishwest9787
@childishwest9787 5 лет назад
These videos are so useful
@russwelch5827
@russwelch5827 4 года назад
excellent explanation
@rosublood_
@rosublood_ 3 года назад
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
@tech-letters
@tech-letters 4 года назад
Wow. I love your videos. Better than any lecture at university...
@NetworkDirection
@NetworkDirection 3 года назад
Wow, thank you!
@JJenny1111
@JJenny1111 3 года назад
thank you! this really makes sense, and helps a lot
@NetworkDirection
@NetworkDirection 3 года назад
Glad it was helpful!
@El_Mr_Misterioso
@El_Mr_Misterioso Год назад
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
@aunmaqsood3129
@aunmaqsood3129 3 года назад
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?
@TheRealStevenGlen
@TheRealStevenGlen 4 года назад
These videos are great! Thanks
@NetworkDirection
@NetworkDirection 4 года назад
Thanks!
@thetech8961
@thetech8961 4 года назад
The intro got me!!!
@prakashmc2842
@prakashmc2842 4 года назад
Miga Arumai! Valthukkal!
@NetworkDirection
@NetworkDirection 4 года назад
thanks
@kristiyanivanov7414
@kristiyanivanov7414 3 года назад
Absolutely fun. Thanks.
@NetworkDirection
@NetworkDirection 3 года назад
Glad you enjoyed it!
@deshawnmitchell9585
@deshawnmitchell9585 2 года назад
Wonderful work...but hoped the answers for the little quiz was right in the vid
@NetworkDirection
@NetworkDirection 2 года назад
It would make the videos a bit too long. Some of these are quite long already
@aniswlidi2012
@aniswlidi2012 7 месяцев назад
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.
@sede189
@sede189 4 года назад
Awesome so far!
@NetworkDirection
@NetworkDirection 4 года назад
Thank you! Cheers!
@imk8729
@imk8729 3 года назад
Great videos, thanks.
@NetworkDirection
@NetworkDirection 3 года назад
You're welcome!
@shivanshbhatnagar9311
@shivanshbhatnagar9311 3 года назад
Great video❤️
@rglyneslava2514
@rglyneslava2514 3 года назад
Thanks for this great video 😊
@NetworkDirection
@NetworkDirection 3 года назад
You're welcome
@rglyneslava2514
@rglyneslava2514 3 года назад
Can I get the answer of the question ? I need it on my activity . Please🙏❣
@rglyneslava2514
@rglyneslava2514 3 года назад
Can I get the answer of the question ? I need it on my activity . Please🙏❣
@EmpireProWrestling2023
@EmpireProWrestling2023 2 года назад
Thank you for calling IT, have you tried turning off and on again. I love it! The IT crowd is amazing!
@NetworkDirection
@NetworkDirection 2 года назад
Most iconic IT quote on TV
@michaelnolk9701
@michaelnolk9701 2 года назад
love this!
@NetworkDirection
@NetworkDirection 2 года назад
Thanks!
@jonasmayer2588
@jonasmayer2588 2 года назад
Phantastic content! Im happy to support you on Patreon :)
@NetworkDirection
@NetworkDirection 2 года назад
Thank you!!!
@NetworkDirection
@NetworkDirection 5 лет назад
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
@Ari-118
@Ari-118 5 лет назад
Loved this video also 💖
@trbgraphics5557
@trbgraphics5557 3 года назад
Yeah this was an amazing series! How's your progress 2 years later? Just curious
@Ari-118
@Ari-118 3 года назад
@@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.
@trbgraphics5557
@trbgraphics5557 3 года назад
@@Ari-118 Oh that's awesome. So what do you do as a main career? or are you a studying still
@Ari-118
@Ari-118 3 года назад
@@trbgraphics5557 no no, just a hobby.
@NetworkDirection
@NetworkDirection 2 года назад
Thank you!
@mypuppygurl
@mypuppygurl Год назад
I lOVE your videos but can't afford the answers :( That suxs but ty for the wonderful videos. I have subscribed :)
@joshshaigan9629
@joshshaigan9629 4 года назад
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.
@gabelul_
@gabelul_ 4 года назад
these steps are required so that the data can be safely and correctly sent to the reciever
@CreativeHomeTutorial
@CreativeHomeTutorial 4 года назад
yes it is use ful
@amberalam6555
@amberalam6555 3 года назад
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.
@NetworkDirection
@NetworkDirection 3 года назад
Hi Amber, While I can't promise much, you're welcome to contact me at feedback@networkdirection.net
@MrSwagger5468
@MrSwagger5468 4 года назад
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
@huyang2885
@huyang2885 Год назад
great
@sujanmagar9795
@sujanmagar9795 4 года назад
I wanted to learn everything from the basic to advance. Please suggest me some books to pass certified exams.
@xeifora
@xeifora 2 года назад
That intro... suddenly kill me, that's how we understand the humour in the IT universe XD
@NetworkDirection
@NetworkDirection 2 года назад
Got to find some humour when we can :)
@crockcode4971
@crockcode4971 3 года назад
thanks but still not getting it right in my head but I will revisit this video various times to understand OSI layers..
@NetworkDirection
@NetworkDirection 3 года назад
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
@avantikak6480
@avantikak6480 3 года назад
Thank you so much for all the classes Sir, they were really helpful. Just a doubt, does fragmentation of data into packets happen at the transport layer or network layer? The book I've read it from mentions Network layer, but you've mentioned transport layer in your video? Also, just related to the addresses Transport layer: Port number Network layer: IP addresses Data link layer: Mac adresses present in the NIC. Is this right Sir, I hope I've understood it correctly?
@NetworkDirection
@NetworkDirection 3 года назад
It looks like you've understood it correctly. The data from the transport layer is broken into packets, if that's what you're referring to Packets are sometimes too big, and need to be fragmented into smaller packets. This happens at the network layer
@avantikak6480
@avantikak6480 3 года назад
@@NetworkDirection so first data at the segment layer is segmented into segments, and if according to MTU the packets made at the network layer are too big, they are further broken down and this is known as fragmentation. Am I right Sir? Another doubt that I had was that when we say that layer 2 adresses keep on changing, we mean that the MAC adresses keep on changing depending on whichever device is next, be it router or host. But layer 3 address remains the same, as in the IP address in the frame is only of the destination, whereas the layer 2 address keeps on changing. I hope I'm correct?😬 Also, in your video you asked us to match certain descriptions with the layers. The description was: Delivers data error free... I feel that there could be 2 answers to this, one the Transport Layer due to connection oriented protocol TCP, but also Data Link layer since it adds the trailer to the frame for error correction? Are there actually 2 answers to this, or am I going wrong in the concept here Sir?
@avantikak6480
@avantikak6480 3 года назад
@@NetworkDirection I really appreciate you replying to my previous doubt Sir, and if you dont mind me saying, you have a really good voice 😂👍🏻. Even when I'm reading my computer books, I tend to hear them in your accent 😂
@NetworkDirection
@NetworkDirection 3 года назад
@@avantikak6480 You've pretty much got it. There are some exceptions to this, but you'll find those as you go along. You're right, layer 2 does have the trailer. Here's something to think about: Is TCP the only protocol operating at layer 4? It might help to watch a few more videos, then revisit this one.
@NetworkDirection
@NetworkDirection 3 года назад
@@avantikak6480 Thanks! I don't hear too many people complimenting the Aussie accent
@xiaobai435
@xiaobai435 3 года назад
Is it me or Part 1 is amazing, then the rest of the parts are dropping in quality and explanation is lacking in certain portions. Now there is a forced contribution by patron to see the answer, if not then the gap of the lack of understanding would increase per part
@NetworkDirection
@NetworkDirection 2 года назад
nah, just you 😀
@ashishgarg5809
@ashishgarg5809 11 месяцев назад
maybe because its getting detailed and going over your head. Its same quality and hopefully I will get selected tomorrow for the job by learning from this
@BrianEvans766
@BrianEvans766 7 месяцев назад
@@NetworkDirection 💀💀💀😂💀
@derrickmuwonge5262
@derrickmuwonge5262 Месяц назад
Just you dear
@co1355-tejastiwari
@co1355-tejastiwari 3 года назад
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
@NetworkDirection
@NetworkDirection 3 года назад
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
@user-lj9lb5rh5u
@user-lj9lb5rh5u 3 месяца назад
what is the answer of the question number 1 about "which layer should be addressed"
@khari83637
@khari83637 11 месяцев назад
6:25 - I would guess layer 3 as it involves QoS and load balancing
@moshet842
@moshet842 4 года назад
"I'll put the answers on the website of course" >Goes to website... Crap I'm broke, I guess no answers for me.
@baronvonmike
@baronvonmike 4 года назад
Yep, please don't pull that BS. Tell us the answers.
@midimusicforever
@midimusicforever 4 года назад
@@bharatsharma9641 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.
@midimusicforever
@midimusicforever 4 года назад
@@bharatsharma9641 It is situational. In most situations, adding more bandwidth is cheaper.
@kb26inla
@kb26inla 4 года назад
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
@aleksandarjevtic9578
@aleksandarjevtic9578 3 года назад
Seriously, you don't have aprox 3 $ for this amazing content? I think you're saving your funds on the wrong end.
@lambpiefoon373
@lambpiefoon373 3 года назад
Is this Hugo from DataCamp? Excellent Videos
@NetworkDirection
@NetworkDirection 3 года назад
I've never heard of Hugo or DataCamp, but I'm glad you like the videos!
@jiatuli6421
@jiatuli6421 4 года назад
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!
@NetworkDirection
@NetworkDirection 4 года назад
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.
@davidanderton2437
@davidanderton2437 3 года назад
Pretty good, only a could of things that could be better. You don't define what acronyms stand for... Eg OSI and also assume the viewer knows what some things are.. eg asking about how to Fix a bandwidth issue when you haven't explained what bandwidth is in any of the videos in the series thus far. Besides that this is a very good effort at explaining networking to beginners.
@NetworkDirection
@NetworkDirection 3 года назад
Thanks for the feedback. One thing I've tried to do is keep this practical. Sometimes I feel that listing details like what acronyms stand for makes it more like a dictionary, encyclopedia, or RFC. So that's why I sometimes, deliberately, do this. Good point on defining bandwidth though.
@DarkbaseTTV
@DarkbaseTTV 5 лет назад
Answers to the quizzes are only available with a login? :(
@NetworkDirection
@NetworkDirection 5 лет назад
Thanks for pointing this out, this is now fixed
@kevingichamba3963
@kevingichamba3963 4 года назад
@@NetworkDirection its not yet
@lucamuller3207
@lucamuller3207 4 года назад
Any chance you work in the basement of an office building with a collegue named roy?
@ericdreal1907
@ericdreal1907 4 года назад
bruh I feel personally attacked
@jiatuli6421
@jiatuli6421 4 года назад
Another question: Why the source MAC address of the second frame is not the same as the destination MAC address of the first frame?
@NetworkDirection
@NetworkDirection 4 года назад
Routers update the source and destination MAC as frames pass through
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