TCP vs UDP - Explaining Facts and Debunking Myths - TCP Masterclass

TCP and UDP are the predominate Layer 4 protocols that have been used since the dawn of the Internet. In this video, we discuss TCP and UDP without getting bogged down with jargon or incomplete definitions.
We compare TCP and UDP across 4 dimensions:
- Connection Oriented vs Not Connection Oriented
- Reliable vs Unreliable (although, I don't like the term "unreliable" here)
- Flow Control vs No Flow Control
- More Overhead vs Less Overhead
Then we discuss and dispel four Myths about TCP and UDP:
- UDP is Faster
- TCP is More Secure
- UDP is Unreliable
- TCP is Guaranteed Delivery
A note about the myths:
As I mention in the video, a lot of what makes these "myths" is how you interpret the words -- in the end, it could all come down to syntax. This video is a teaching tool, I mean to teach you (the viewer) about TCP and UDP, and if this video can lead you to understand how some interpretations of "UDP is Faster" is correct, and some interpretations of "UDP is Faster" is incorrect, then I will consider my goal a success.
Correct Interpretations of "UDP is Faster": UDP has a higher maximum potential bandwidth, UDP has less overhead, UDP has less serialization delay, UDP has less inspection delay
Incorrect Interpretations of "UDP is Faster": UDP packets move faster than TCP packets, UDP always has faster throughput, UDP has no latency
00:00 - Intro
00:40 - Pre-Requisites - OSI Model Layer 4
01:15 - Agenda for this video
01:33 - Connection Oriented vs Not Connection Oriented
03:52 - TCP is Reliable -- but what does that mean?
04:07 - Confirmation of Data Delivery
04:45 - Application is Aware of Errors
05:41 - Data Ordering and Sequence Numbers
07:55 - Notice I didn't say UDP is not reliable
08:08 - Flow Control & Bandwidth Utilization
10:30 - TCP has More Overhead, UDP has Less Overhead
11:56 - UDP Header, 4 fields, 8 bytes
12:21 - TCP Header, 11 fields, 20-60 bytes
13:27 - Dispelling Myths about TCP and UDP
13:53 - UDP is Faster ... Not Exactly -- Myth 1
14:47 - TCP is more Secure ... WRONG -- Myth 2
15:48 - UDP is Unreliable ... NOPE -- Myth 3
16:52 - TCP is Guaranteed Delivery ... Well, not really =/ -- Myth 4
17:55 - There is so much more to discuss with TCP
19:30 - Summary
#tcp #networking #internet
Transmission Control Protocol, User Datagram Protocol,
=== 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?
====
🖧 Full Networking Fundamentals series (Module 1 - all FREE):
• Networking Fundamentals
📜 Studying for your CCNA?
www.practicalnetworking.net/i...
🧮 Want to learn Subnetting?
SubnetIPv4.com
🔐 Want to learn about SSL, TLS, and Cryptography?
• Practical TLS - Free L...
📖 Other Courses: classes.pracnet.net/
💬 Discord: / discord
If you enjoyed this content, then please tell one other person about this series. Sharing this video is the best way you can thank me and return the favor for this free content. Plus, you can get free Internet Points (karma, likes, retweets, etc) by simply sharing this content across social media communities. =) Thank you.
---

[@PracticalNetworking]

📺🧩 TCP Masterclass: kzbin.info/aero/PLIFyRwBY_4bS-PQZoF0UySdG0sH9VA0bn 🚨📢 Announcement: *I'm creating a full Networking course!* Details --> pracnet.net/networking 👉👉 Enroll now for *discounted early access* to the course and a chance to help shape its content. 📺🕸 Module 1 of the course is *free* : kzbin.info/aero/PLIFyRwBY_4bRLmKfP1KnZA6rZbRHtxmXi But what about the TCP Masterclass? I have about 10-12 lessons scoped out for a comprehensive TCP Masterclass, and I'd love to create it at some point. When I released the first three lessons, I offered a challenge: If any one video garnered 100k views in the first 6 months, I would create the full TCP Masterclass. Unfortunately, we didn't meet that goal, so I had to prioritize other projects. But I haven't given up hope! *If you are interested in seeing the full TCP Masterclass developed, then the best way to bring that to fruition is to spread the word about this content*. Doing so will help others fully understand TCP and UDP and bring me closer to committing to creating the full series... Plus, think of all the Internet Points you can get for sharing this series (likes, karma, follows, etc) 😉 If you share this series, please use this link: kzbin.info/aero/PLIFyRwBY_4bS-PQZoF0UySdG0sH9VA0bn Otherwise, I genuinely hope you got a lot out of the first three lessons. Thank you for all the encouraging words in the comments. =)

[@leandrormor]

ty for sharing your knowledge

[@PracticalNetworking]

@@leandrormor You're welcome, A14 =)

[@user-he2np4yf4q]

Congratulations! I am from a Non-IT background and trying to enter the IT industry (Cyber Security - SOC Analyst).. Is it possible if you can share a couple of question you were asked in your interview.. Would be of great help. I gave a mock interview and could answer only 40% of the questions asked as per the feedback and major questions were from Networking basics...Thank you.

[@GodrikN7]

Ed, thanks to your Networking fundamentals series, I got my first job at a FAANG company. You don't know how grateful I am of having found your excellent videos, you changed my life :)

[@PracticalNetworking]

Wohooo! Congratulations! So happy for you and I'm honored to have been a part of your journey.

[@user-xl7tg9bt7j]

In one day with this channel, I learned more about networking than in five years of dealing with computer science

[@PracticalNetworking]

This comment made me chuckle ;p. Hope the knowledge continues to serve you well!

[@cypress696]

Best networking channel no doubt

[@mudtruka9196]

We are lucky to have you! Thanks so much Ed. Make the class either way, I'll be happy to pay a fee.

[@PracticalNetworking]

Thanks for the kind words & sentiments. Cheers, Mudtruka!

[@shgz2503]

You just cannot not enjoy learning Networks with Ed. I admire his accuracy and simplicity. It's definitely a different league. Thank you Ed.

[@atulkumar2636]

No words. Simply brilliant bro😎

[@PracticalNetworking]

Thank you =)

[@Fredsch08]

I've been a network engineer since 1999 and still love watching Ed's videos. I recommend them to everyone interested in getting into networking. Keep up the good work, Sir :)

[@DG-ju2wf]

That is the best channel; explain TCP/UDP with clarity

[@PolanskiJoe]

This is simply great stuff! I wish for more of it, Your slides are great and You bring information across in a simple way, but never losing the great picture! Many thanks!

[@nulllogos5846]

Fantastic work! Been doing this for many years & you explain it in a simple, easy to follow manner! Well done!

[@stepankarel903]

Thanks for the amazing videos, Ed. The time and thoroughness you put into these videos really save the time of thousands of learners around the world, and I'm confirming it as one of them.

[@ethanPi]

Love the channel! And really looking forward to dive deeper on the topics that you've mentioned in TCP for future videos. This is really interesting stuff!

[@alessioscippo596]

Thank you for clearing up the misunderstanding about 'connection oriented' and 'not connection oriented'.

[@advaithhl]

These videos are absolutely incredible man! I recently came across your channel and I'd confidently say that I learnt more from your videos than what I'd learnt from my network classes in college. Thanks a lot!

[@jacobalexander560]

This channel is an IT gold mine. I’ve watch many videos from this channel and I’m almost never confused by the end. Thank you for what you do!

[@pedroarrozal4342]

Thank you very much Ed. This is my first time i have opened one of your videos and I love it. Will watch your other videos as well. Keep the videos going Ed. I’m one of your supporters now.

[@solomony8747]

One of the best content on KZbin. People like you make a difference. All I can say is thank you very much and keep up the good!!!

[@howtodothat5495]

Please continue making these videos! They are very helpful, thank you very much for your work! 👏🏻👏🏻

[@Harshit-ju2iz]

Thank you for the series man, it was really easy to understand. I have just started learning about networking and you really made it a cake walk.

[@paxwilliams5195]

Looking forward to the rest! I absolutely love your networking fundamentals playlist !

[@bcordoba]

One of the best (if not the best) comparison that I have seen of TCP and UDP, keep up the good job Ed.

[@aleksandrsreksts7229]

Hello! I absolutely adore the way you provide information and explain things in your videos! Thank you very much!

[@iheartddead]

This channel (and also the website) is literally the best source of information about networking I've found on the Internet. Thank you so much for your hard work!

[@hughatkins]

Your careful choice of words makes me understand the content much more that other videos on the same content. You’re a very clear speaker. Thank You!

[@jamescurry2250]

Bruh I just happened upon this channel and I've liked and subscribed but I HAVE to also comment. That was one of the most incredibly clear, informative and concise explanations I've ever heard for a more complex (at least in my mind) IT topic, let alone for something in Networking. I feel like I just learned not just listened to but actually learned about 3 hours of material in 20 minutes haha. Thank you for this!

[@NeurosesGamer]

I appreciate your professionalism so much, it's on another level. You seem to have that tick for wanting accuracy and perfection in what you can learn and speak about to others and it has really shown in the content to me. Thank you.

[@Archit16111]

Really, one of the best video I've come across the internet today. Well done!😄

[@PetrasL_1976]

Thanks, your lessons are always clear and constructive.

[@rghazzi]

Ed, please keep going, I have never seen comprehensive and detailed content easy to understand like yours. I'm sharing your videos with everyone at work and refer them to your videos whenever there's something related to network. I want to thank you very much for what you're doing and encourage you to do more for us :)

[@jenniferrosario]

Ed's done it again, what an outstanding video to help me understand TCP and UPD. Will share it with my classmates. Thank you very much, Ed.

[@uzotammynwokoro1128]

Your delivery strategy is terrific.

[@samiryadav4538]

Underrated man...even high paid courses not gave us this kind of information and knowledge....I am lucky like others already subscribed humans to find u..

[@DeRizzlo]

Ty for your time into making these videos. You will always be my best networking teacher!

[@kamalzubairov2344]

Your channel is a treasure trove for networking beginners. Thank you for delivering RELIABLE content!

[@aleksandra9013]

your are the best honestly, I was learning on my own from various sources and the way You explain stuff in every detail is the best! I feel like you throughly understand every aspet of everything you try to teach and that is precious so keep it up!

[@MultiRomyl]

Incredibly informative, clear, and concise!!

[@sinaomidvar2807]

Thank you so much for the valuable content you create and share with us on a free platform. 🙏

[@vikash87khichar]

Oh my god... i am feeling blessed that i found you as a networking GURU(teacher) . Thanks dear for your efforts. Love from india.

[@sasankt7068]

You explain the best way over the entire internet..! Please keep going and would love to see on the other topics , window sizing etc.

[@ssexy1986]

Thank you so much for this series. You have no idea how much i appreciate the videos and the knowledge you are sharing. Please put more content. and please dont have to compromise on quality even it takes time. You are the best. Thanks again.

[@sandylarsen7727]

These are such great videos 👍🏻 well delivered, very well illustrated, appropriate for the audience. What I appreciate the most is your passion for these topics and generosity to share it to the world. Thank you, thank you, thank you ❤

[@vicki-annthornton8330]

awesome thanks so much Ed. I'm so glad I found you - I'm sitting my network+ next week and this series explains so much and more importantly I get it!

[@user-zz6lo4pj3c]

So far the best instructor I came across on the internet teaching networking in simplest way.

[@SheilaMarieFurugganan]

One of the best lectures I have watched in KZbin. Very detailed!

[@japhetukaegbu287]

Some people are just gifted teachers, this guy is one of them

[@jzamss]

This channel is a gold mine for a network novice like me. Thank you Ed

[@fakeaccount3415]

It's facinating to see the tcp , i have been in the networking field for more than 8 years without knowing the fundamentals properly . these topics are explained in much understanding way . thanks for your efforts , but please continue that master class tcp remaining topics like flags checksum etc. i will try my best to spread it .

[@PracticalNetworking]

Thank you for your support. And for the kind words.

[@rahmalh]

Your graphical presentation and explaination are very fantastic.

[@shivangbhawsar362]

I watched this series and whatever you've explained bought me much more closer to feel the Networking in the devices we use everyday, and I am really enjoying that, thankyou for this beautiful content :)

[@shrikanthyadravi9682]

This helped me, a lot in clearing tech interviews.. One of the best.. Thank you.

[@JFru91]

Excellent job. I rarely comment on YT videos, but this content is just awesome. Your videos help me better understand Google IT professional certificate I’m currently getting through. Understandable, approachable, interesting. Thank you and keep on goin! Cheers!

[@dreamfriend100]

Thank you so much for your time making this videos. ❤

[@thestarinthesky_]

Absolutely amazing course! Thank you!

[@tigron1530]

Yo tysm for this content, i love you explaining all this for free, keep it up!

[@Heathstretch]

Yet another fantastically detailed explainer from Practical Networking. Ed, thank you for all that you do!

[@PaulJohnson-dw1pj]

This guy is a genuinely brilliant teacher and communicator. You sir have a gift.

[@noahbahnson]

For a visual learner like myself these videos are gold! Thank you for the time, effort and knowledge.

[@eljonko95]

This is arguably the best KZbin channel about networking I have seen so far. Thanks for the quality content!

[@florescustefan5239]

As a QA Automation Engineer I really have enjoyed all of the work you have invested into this video !

[@jeffersonsanchez5972]

I like how you take everything step by step and correlate it all for better understanding, rather than just providing a bunch of information. Thank you for sharing your knowledge

[@joshuabarrier8908]

Great videos, you explain it more clearly then anyone else I know!

[@mosesshiferaw3580]

Really great and understandable content. Please keep 'em coming 🙏

[@BonBonShrimp]

Awesome video. Clear and concise. Please make more videos in this series. Looking forward to the next one. Thank you!

[@PracticalNetworking]

It's releasing Monday =) It's going to explain how TCP does all those cool things we mentioned in this video.

[@aja9388]

Thank you very much for your work! Your videos are real treasures. I'm computer science student, and now we're studying the basics of computer networks, and I am very very happy that I found your channel!

[@Ajju1992]

You blowed up , very nice session , pls keep continuing it

[@Nihdem]

Thank you Ed! By far the clearest explanation of TCP vs UDP video l have ever watched.

[@cslb38]

Great to see you back Ed, and we are certainly hoping this series gets traction. You've helped my study so much with your content, like the mastery subnetting, etc. I know personally I will be doing my part to get the word out. Thank you much for your efforts bro!

[@PracticalNetworking]

Great to hear! Love hearing that my content had helped you understand networking!

[@SeanLaidlaw-fw2ph]

Possibly the clearest and easiest to follow content on Networking i've come across! The first channel i've subscribed to!

[@PracticalNetworking]

Thank you for supporting the channel, Sean. Thanks for the kind words =)

[@aimanahmed9641]

I am so lucky to have you as a teacher thank you very much

[@PraveenRai]

@ED as usual your content is master class thanks and looking more on TCP series deep dive

[@karlg3274]

Hello, Ed. I´m thrilled about your passion for networking and that you are sharing so much to help new professionals entering this field. I wanted to send you a personal thank you. THANK YOU!

[@robl39]

Dude, you are by far the best teacher on this stuff.

[@mannyle0814]

These videos are amazing. They are so easy to understand.

[@randallhooper4451]

That made more sense than a semester of networking about TCP/UDP/Quic. Thank you.

[@PracticalNetworking]

Glad you enjoyed it, Randall =) Cheers !

[@thetaung3092]

Thank you so much for teaching and sharing such wonderful knowledge!

[@goodguyviz]

Informative video, started my journey in computer networking. thank you so much.

[@RamilaAnsar]

You're doing a great job, this will help so many individuals with their careers in IT. Stay Blessed

[@user-rr4tm4hy2n]

I am really impressed by the way you teach the lessons. Very clear, easy to understand, comprehensive. Please continue like this. And big thank you 🙂

[@samuelieremie8443]

The best teacher I encoutered so far for networking. You explain all concepts with such clarity. Simple and to the point!

[@PracticalNetworking]

Glad you're enjoying this content =)

[@raimundoedungomobindang5536]

Thanks brother for your explanation, I understand the TCP and UDP better now without having to read the materials.

[@exonnexis9441]

wow, such a great presentation. I hope to see more content!!👌

[@avikodak]

Thank you so much for taking the time to provide such a thorough explanation. Your insights have greatly enhanced my understanding of some of the fundamental concepts in networking. These educational videos are truly helping me to grow and become a more skilled and knowledgeable software engineer. The level of detail you've shared has given me a lot more clarity on these subjects.

[@ihort6739]

awesome content and delivery, thanks!

[@ultron1060]

Thanks Sir.I'm given an assignment on Transport Layer and you'r videos are really helping me brushing my concepts

[@koffibanan3099]

Fantastic comparison, very informative as usual. I hope YT will someday give you the audience you deserve! Thanks!

[@PracticalNetworking]

Hope so too, thanks Koffi !

[@leetanizer]

Thank you very much for all the effort you put in making those amazing videos

[@user-cf3jv5wz5i]

Man you're awesome! Thank you for all these!

[@mmeezrebi2009]

Great channel, keep up the good work man

[@Accordiany08]

The delivery quality is tremendous my man ,, Your delivery is so so so smooth that is make it so easy to think, understand and connect the dots. Thanks absolutely not enough! ,, Will share your channel to everyone

[@PracticalNetworking]

Thank you for the kind words and your support in sharing the channel! =)

[@mralix9566]

Thank you so much , you're a lifesaver I am grateful i knew someone like u 💜

[@semnijipa2649]

This is an awesome piece. You deserve a like and most definitely subscribed!

[@jonnalagaddaharshavardhan4225]

Amazing explanation and the way you are presenting brother... thanks alot

[@Sledge72au]

Thanks for the time and effort you put into this content. Very helpful.

[@PracticalNetworking]

Glad you enjoyed it. You're welcome =)

[@kilermatch5121]

Thankyou.......This is the real networking course in the world..... we need more.....

[@user-cd3ul1ns2q]

You are networking hero..best teacher on internet

[@arandomguy9474]

always wait for your video. they are always so informative and good!

[@PracticalNetworking]

Thank you =)

[@naseerzargar5684]

Thank you so much for all the efforts.

[@adedejiemmanuel1]

Hey! You've been gone for eon. I'm glad you're here and this is brilliant as always. Thank you. Oh, by the way, the outro (and the intro) is smooth. Thanks again.

[@PracticalNetworking]

Thanks Azza =). Yes, there was a long break!

[@herteert299]

Thank you very much Ed for this cours no one explain as you do you are the best.

[@PracticalNetworking]