Free CCNA | TCP & UDP | Day 30 | CCNA 200-301 Complete Course

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Free CCNA 200-301 flashcards/Packet Tracer labs for the course: jitl.jp/ccna-files
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In Day 30 in this free CCNA 200-301 complete course, you will learn about the Layer 4 protocols TCP (Transmission Control Protocol) and UDP (User Datagram Protocol).
In this FREE and COMPLETE CCNA 200-301 course you will find lecture videos covering all topics in Cisco official exam topics list, end-of-video quizzes to test your knowledge, flashcards to review, and practice labs to get hands-on experience.
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======================
0:00 Introduction
0:44 Things we'll cover
1:53 Basics of Layer 4
4:18 Port Numbers, Session Multiplexing
8:57 TCP Overview
10:28 TCP Header
11:57 Establishing TCP Connections: 3-way Handshake
13:25 Terminating TCP Connections: 4-way Handshake
14:30 TCP Sequencing/Acknowledgment
17:07 Flow Control
18:34 UDP
20:04 TCP/UDP Comparison
22:06 Important Port Numbers
25:22 Things we covered
26:09 Quiz 1
26:48 Quiz 2
27:30 Quiz 3
28:16 Quiz 4
29:03 Quiz 5
30:08 Boson ExSim
#cisco #CCNA

Пікірлер: 226

@XxThePlaylistxX Ай бұрын

I wish this video series was around when I was first learning networking. So many classes I have taken, in college and out of it, and books that I have read including the official book by Cisco, were taught by people who already think like a CCNP, where all these concepts have already clicked and are second nature, and that's how they taught the class. Topics were often presented in a vacuum without fully tying them into the related topics. They would never preempt questions that a first time student might have because they weren't thinking like a first time student. In your videos you teach topics by tying them into each other, you review things we already learned so that we can build upon it. You answer so many of our questions before we even have to ask, especially about discrepancies between what we learn, and what we see in outputs and commands. Your labs build upon skills learned earlier in the course which keeps them fresh and commits them to memory. Your flash cards will ask the same question multiple times in different ways to help information stick. I love how you address the ridiculousness of the naming conventions and acronym salads they use and how one word can mean many different things depending on context, like port. I have gone through CCNA materials many times but I am learning and having revelations about so many things because of your thoroughness and use of examples to prove a point. Thank you Jeremy, I am taking my 2nd attempt of the exam on 5/24 and I am super nervous, but this course is making me feel more prepared than ever.

@imjinaah 2 жыл бұрын

I'm finally half way through! (👍 ͡❛ ͜ʖ ͡❛)👍 0:01 Introduction 0:45 Things we'll cover 1:53 Basic Functions of Layer 4 (Transport Layer) 4:19 Port Numbers/Session Multiplexing 8:57 TCP Transmission Control Protocol Overview 10:28 TCP Header 11:57 Establishing Connections: Three-way Handshake 13:24 Terminating Connections: Four-way Handshake 14:30 Sequencing/Acknowledgement 17:06 Flow Control 18:34 UDP - User Datagram Protocol 20:04 TCP-UDP Comparison 22:07 Port Numbers 25:23 Things we covered 26:09 Quiz!

@yannicundminecraftlp 10 ай бұрын

But why

@maxwellchessdotcom6952 2 жыл бұрын

Jeremy, today I passed the ENSLD Network Design exam! NOW I'm a CCNP!!!!!!! Took almost 1 year exactly starting from beginning the CCNA! I'm now a CCNP!!! Horrah!!!!!!!!!!!!

@wafa1203 Жыл бұрын

Can you tell me what is network design because there’s a lot of fields so can you give me a brief about it?

@maxwellchessdotcom6952 3 жыл бұрын

Next Halloween I'm dressing as Jeremy.

@AdoniToribio 2 жыл бұрын

I didn't realize it until now, but we have been going up the OSI model this whole time lol Which is awesome because now I have a clearer understanding of each layer! Great work Jeremy!

@syedyousafbukhari2213 10 ай бұрын

same here, exactly!

@dimphomosia6958 2 жыл бұрын

"I'd tell you a UDP joke, but i'm afraid you might not get it"

@llQuietyoull Ай бұрын

very funny 😁

@dbest19330 3 жыл бұрын

Wow, I learned about the 4-way handshake for the first time. This is one of the benefits of watching training videos from multiple authors/IT trainers. Thank you Jeremy

@JeremysITLab 3 жыл бұрын

Everyone teaches the 3-way handshake, but for some reason no one mentions the 4-way handshake!

@dbest19330 3 жыл бұрын

@@JeremysITLab I totally agree, I have done CompTIA A+, I've take community college classes in intro to data communication and network design, and I also got certified in Comptia Security+.......I never came across the 4-way handshake to terminate connections

@atoamuah8868 3 жыл бұрын

I can't tell you how much your videos help in understanding the concepts in this course. Thanks so much. Keep it up. We need you.

@JeremysITLab 3 жыл бұрын

Thank you, glad to hear it!

@ernestibrahim7532 3 жыл бұрын

This Gentleman is God sent . You have boost my moral and confidence in ICT especially Networking

@JeremysITLab 3 жыл бұрын

Thank you, Ernest ;)

@Shahzadtoor 2 жыл бұрын

Thanks Sir Jeremy for making such wonderful videos. No words! Just respect and love for you!

@Alberto.81 3 жыл бұрын

Thank you Jeremy! Great lesson as usual.

@marcounchained 11 ай бұрын

Just amazing. I'm learning so much more from watching your videos than CBT nuggets. Your content is free of charge and theirs actually costs money. I wish I had learned about your channel sooner. Still grateful of people like you Jeramy! You rock man!

@WiktorForczek-qe9xt Жыл бұрын

That SYN ACK communication oriented traffic video bit with the two sides of the matter showed at once was so helpful, I couldnt think of it any clearer than how it was shown in here! Great video!

@-b777ljq3 2 жыл бұрын

this is a very good explanation about TCP/UDP, very systematic. Many thanks to Jeremy's hard work.

@zakyusuf8135 3 жыл бұрын

Jeremy you're a legend mate. Hope you're compensated well for your efforts

@rotrose7531 2 жыл бұрын

Thank you very much as always, for me, without your tutorials, I can never imagine I can do anything with networking.

@justbright3412 3 жыл бұрын

Thank you Mr. Jeremy for all your efforts. Best courses for everyone to understand CCNA.

@JeremysITLab 3 жыл бұрын

Thank you :)

@franksoko02 3 жыл бұрын

Hi Jeremy, thank you, you are literally my favourite notification on KZfaq, i eagerly away your next lecture

@JeremysITLab 3 жыл бұрын

Thanks Frank :)

@RahulSingh-vo6hx 7 ай бұрын

Even though I've passed the CCNA, I still return to these videos as a refresher because I'm studying other IT certs now. I just can't get over HOW GOOD this FREE resource is. I've paid good money for resources that don't even come CLOSE to the quality that you've provided Jeremy! Thank you SO MUCH!! I honestly passed thanks to you. Without your free course I can't see how I'd have passed.

@stevenmendoza3732 3 ай бұрын

Congratulations. What were the toughest topics you would recommend to focus on?

@faizaussi352 3 жыл бұрын

I really love this course, all thanks to u Jeremy 💖

@JeremysITLab 3 жыл бұрын

Thank you, I'm glad to hear it :)

@mohameddoubad1653 3 жыл бұрын

Thank you so much Jeremy you are the one that we needed . keep going man !

@JeremysITLab 3 жыл бұрын

Thanks, Mohamed!

@teeco78 3 жыл бұрын

Excelente video, as all your past videos, thank you very much Jeremy.

@JeremysITLab 3 жыл бұрын

Thanks, Andrey :)

@tobiaskamper1569 Жыл бұрын

Man TCP and UDP is such a cool topic, I'd definitely study it more in depth when I'm done with the ccna.

@toshakrajuprety9817 3 жыл бұрын

What a teacher...hats off....RESPECT

@JeremysITLab 3 жыл бұрын

Thank you ;)

@GabrielFoote 10 ай бұрын

I have been labbing for years and the relationship between ports and packets just clicked. lol. Much appreciated series.

@mathewstj Жыл бұрын

thankyou Jeremy for your time and effort . really help full

@kadercisco6877 3 жыл бұрын

Yoooo yooo yooo it's jeremy on the time😍😍😍best ccna course

@JeremysITLab 3 жыл бұрын

Thanks Kader ;)

@abdelrhmanabouelfoutouh4150 Жыл бұрын

simply, this is the best explaination I 've ever seen in this topic

@cesarbrenner5146 3 жыл бұрын

The way you explains is really good Jeremy. I read some books of ccna but they use a language that looks not easy but your videos are really Good. I hope to approve my CCNA test. Thanks to upload all these videos.

@JeremysITLab 3 жыл бұрын

Thank you Cesar, good luck :)

@MiguelHernandez-zd7kr 3 жыл бұрын

Thank you for this lesson!

@youneskhelil9133 Жыл бұрын

best teacher on youtube THANK YOU !!!!

@user-lb9kw4ly8l 4 ай бұрын

truly appreciate your efforts

@hashimsaeed5780 3 жыл бұрын

Thank you very much for this wonderful method of explaining and clarifying. I wish you more creativity.

@JeremysITLab 3 жыл бұрын

Thanks for watching :)

@abdiyyonis9746 2 жыл бұрын

Thanks for your help too

@aruizsilva 2 ай бұрын

Thank you very much Jeremy

@gee40trots 3 жыл бұрын

Thank you Jeremy. I will definitely pass through this channel.

@JeremysITLab 3 жыл бұрын

Good luck! :)

@SkyMageTheWise 3 жыл бұрын

Loving this series Jeremy, thank you! Curious, how many videos do you anticipate this course growing to by the time it's complete?

@JeremysITLab 3 жыл бұрын

I'm guessing it will be about 50 'days' in length when it's finished.

@anubhutisharma9632 3 жыл бұрын

Thanks Jeremy ,very informative

@Lyriks_ 3 жыл бұрын

Jeremy made me switch from the state of mere listenning to the state of learning, now i'm looking forward for more videos (get the joke ?)

@JeremysITLab 3 жыл бұрын

Haha, I love it ;)

@dysaniac3807 3 жыл бұрын

Good one...😂😂😂

@maebashitech2526 3 жыл бұрын

Thank you Jeremy for your great effort. I have been flowing your video tutorial so far. Although my score is below 900 I passed my CCNA exam on first attempt today. Thank you Jeremy’s IT LAB

@JeremysITLab 3 жыл бұрын

Awesome, congrats! Score doesn't matter, passing is a big achievement!

@rotinoxy2978 3 жыл бұрын

hi , please , can you shaire dump , thanks lot

@gustavoolaya1 3 жыл бұрын

I lived in Colombia, and I ´ve leraned so much with your courses, even I have applied those knowledges in some projects, thanks, thanks, and thank you very much for share this information, even I have a note book for register some key contents. God bless you.

@JeremysITLab 3 жыл бұрын

Thanks, Gustavo :)

@danialkhosravi7396 2 жыл бұрын

great video

@learningwithpussy 2 жыл бұрын

Just wow, Thank you for the efforts

@nelsoncorreia7293 2 жыл бұрын

Half-way. I'm very happy :)

@TheGamingChannel100 3 жыл бұрын

Hey Jeremy, really enjoying your course. So far I've compiled some fairly decent study material and I thought I might share it with you (and anyone else reading this). I wouldn't mind if you added it to your course as extra study material or something. It mostly consists of screenshots I've taken of all the important slides from your videos, all labeled and sorted into folders (which is great for quickly reviewing a topic you covered without re-watching an entire video), there's an anki file which contains all of your cards up to now, all tagged appropriately (I also added some cards for the rest of the subnet prefix conversions), as well as some text documents with notes, and all the important labs up til now (with a few minor changes for quality of life). Also, thanks for making this course, it's pretty much the first one I stumbled across and I'm glad I didn't waste my time on some lesser course, with your methods (especially the flashcards) I was able to easily understand everything you covered and memorize it. So yeah you definitely earned that commission when I bought Boson ExSim ;P. Here's my notes: drive.google.com/drive/folders/1MNQ306bT3c6RzVb_rb88wPjA_8mu7Cca?usp=sharing

@JeremysITLab 3 жыл бұрын

Awesome, I'll check it out!

@TheGamingChannel100 3 жыл бұрын

@@JeremysITLab You should have access now.

@justbright3412 3 жыл бұрын

Very helpful notes , thank you for your effort

@susmitamazumder8390 3 жыл бұрын

Thanks. I was thinking to ask jeremy for the slide to upload. I am actually writing down whatever he said......all explanations...

@70lawenda70 Жыл бұрын

Man it was 2 years ago and the files are still there! I've downloaded them and I find them very helpful. You are awesome, thank you so much!

@konefine3626 3 жыл бұрын

Thanks for the video

@Moss2323 3 жыл бұрын

Thanks Jeremy

@donnyrap 3 жыл бұрын

Thank you Jeremy! Once more! :)

@JeremysITLab 3 жыл бұрын

Thank you ;)

@nicholassattaur9964 3 жыл бұрын

Great Video Jeremy! Much appreciated...

@JeremysITLab 3 жыл бұрын

Thanks, Nicholas :)

@user-gu5lu6rs8x 2 жыл бұрын

Thank you!!!

@umairm8595 3 жыл бұрын

Thanks Jeremy I appreciate it

@JeremysITLab 3 жыл бұрын

Thanks :)

@shujauttali2608 Жыл бұрын

Great videos ❤ . More power to you

@shlomiunger3518 3 жыл бұрын

Beautifully explained. Layer 4 has never been clearer! #BestTeacherEver

@JeremysITLab 3 жыл бұрын

Thanks Shlomi, glad to hear that :)

@g4gbenga879 3 жыл бұрын

Thanks for the videos Jeremy, they were very helpful. It's really easy to learn from your videos. Please are you gonna release videos for CCNP soon? It'd be really nice if you could.

@JeremysITLab 3 жыл бұрын

Maybe after I finish the CCNA course!

@pankajbobade901 3 жыл бұрын

Much Appreciated! Thank you Jeremy :)

@JeremysITLab 3 жыл бұрын

I hope the video is helpful ;)

@pankajbobade901 3 жыл бұрын

@@JeremysITLab No doubt in that Jeremy All your videos is very very helpful 😊😊 Only one request is complete this series as soon as possible 🤝

@ETPHHM1 3 жыл бұрын

This helped a lot because this became my Interview question and & I answered it well

@JeremysITLab 3 жыл бұрын

Awesome, I'm glad to hear that!

@mg7670 7 күн бұрын

Thanks!

@sintayehuaweke3750 3 жыл бұрын

Thanks Jeremy great video I appreciate it

@JeremysITLab 3 жыл бұрын

Thank you, glad to hear it :)

@ali.gocmen 3 жыл бұрын

Thank you Jeremy !!!

@JeremysITLab 3 жыл бұрын

Thanks for watching :)

@natiti_4846 3 жыл бұрын

Thank you jeremy, you are great.

@JeremysITLab 3 жыл бұрын

Thanks Natan :)

@user-ui6mj6bg7b 3 ай бұрын

Amazing.

@keasbeydave 3 жыл бұрын

Excellent explanation.

@JeremysITLab 3 жыл бұрын

Thanks, David :)

@balafua Жыл бұрын

Found on google - Transparent transfer means the data forwarding device or module is unconscious and no need to care. In computer networks, data of lower layer is packed and sent through upper layer. You don’t need to know the packing process and the packing method, the data that should be transported is transferred as it is. If a module does forward data, in a way you not need to care, this is called transparent transfer.

@chrispark5337 3 жыл бұрын

Hi Jeremy, I would be lying if i say I remember 100% everything from the course. But what i can guarantee, is that I've learnt good enough fundamentals and concepts from all your videos, where now im watching video + books from other sources help me have a better clear understanding of the topics and i can go more indephth. Thank you!

@JeremysITLab 3 жыл бұрын

Thanks, glad the videos helped :) I hope you'll follow along as I continue to complete the course!

@hashan9912 Жыл бұрын

thank you

@DeepakKumar-ov8ko 3 жыл бұрын

I have seen many videos on youtube and also subscribed many channels ...I won't say those videos on networking are not good ..But I can say you are best in my experience.

@JeremysITLab 3 жыл бұрын

Thank you, Deepak!

@hotmail4823620 Жыл бұрын

Jeremy too cheeta hai yar. Thankyou, you are changing lives

@ranaasmar5431 Жыл бұрын

You are pro max bro ❤

@LucianC137 3 жыл бұрын

Extremely important topic for literally all IT related entry level job interviews.

@JeremysITLab 3 жыл бұрын

Yep, and important knowledge all-around for someone in IT!

@damlurker 2 жыл бұрын

Finally got to TCP after all that layer 2 and 3 stuff :D

@andreidaniel7494 3 жыл бұрын

Hello Jeremy, first of all, I want to thank you for the incredible effort that you put in making this videos, I am trying to learn the CCNA from the book since March, but it is very discouraging as a person who never had any contact with this field before, only after finding out about your channel I really understood and begin to really study, the way you have made this videos exactly on the topic and not deviating from the subject is amazing, out of all the CCNA courses on youtube yours is the best in my opinion. Second, I would like to know how far along are we and approximately how many videos more will be until the end of the course.

@JeremysITLab 3 жыл бұрын

Thanks for your kind words :) The course is going to be about 50 'days' in total, I'll probably finish it up early next year.

@jephnelson5408 3 жыл бұрын

Hi Jeremy! Seems like you really answer questions on teachable.

@JeremysITLab 3 жыл бұрын

Did you ask a question? I didn't get any notifications, I'll have to check the settings.

@JeremysITLab 3 жыл бұрын

Seems notifications were off by default, just turned them on. Which video did you ask a question on?

@nedatuaconta2431 8 ай бұрын

tysm

@user-cy8gs6ui6n 3 жыл бұрын

Thank You

@JeremysITLab 3 жыл бұрын

Thanks Putin 👍

@MohammadAli-ek6gh 3 жыл бұрын

Hi Jeremy, Thank you so much for your videos. but can you upload two videos in a week ? Hope that you can do this

@JeremysITLab 3 жыл бұрын

Sorry, I don't have enough time to make two videos per week.

@jzero1579 3 жыл бұрын

3-Way Handshake: Hey I know this 4-Way Handshake: Say what

@JeremysITLab 3 жыл бұрын

The less-famous brother of the 3-way handshake!

@murzikg7682 3 жыл бұрын

Thanks a lot

@JeremysITLab 3 жыл бұрын

I hope it's helpful :)

@ETPHHM1 3 жыл бұрын

Wonderful video because I needed this for my exam

@JeremysITLab 3 жыл бұрын

Thanks, glad to help!

@ETPHHM1 3 жыл бұрын

@@JeremysITLab Do you also charge being a mentor? Or should I just do the Boson Network Simulator

@tomatordia8448 2 жыл бұрын

grate

@vlada35989 2 жыл бұрын

TFTP - NICE port number! :D :D :D

@JeremysITLab 2 жыл бұрын

kzfaq.info/get/bejne/ab1xgtt8tNO2aWQ.html

@tasnimalrayah6369 3 жыл бұрын

thank you for your videos its amazing ,my question is when the full course will be done or uploaded ??

@JeremysITLab 3 жыл бұрын

It will be finished next year

@reneebrandt2190 3 жыл бұрын

First of all - thanks for all your advises!! I need to laugh always, when he say's: "Let's see if I'm correct." in the Bonus Question. @Jeremy's IT Lab Will ever come a video where you are selecting the incorrect answer? :D

@JeremysITLab 3 жыл бұрын

NEVER! ;)

@mthoko 2 жыл бұрын

Hello Jeremy, I would like to ask why segments need sequencing from TCP, I thought the IP header fragment offset took care of the order of how packets are arranged

@louishao2516 Жыл бұрын

Hi sir, should I remember the various TCP and UDP port numbers for CCNA?

@hotmail4823620 Жыл бұрын

Jeremy you mentioned that his is a brief overview. Kindly let me know what source did you use to learn in detail.

@balazsszabo8942 3 ай бұрын

SYSLOG is important for security audit, so many company use TCP protocol

@RB-zu1kj 3 жыл бұрын

Sir I am waiting for the last 2 modules or chps of ccna exam syllabus to be covered by you as I feel that 2 modules to be tough to understand but I am damp sure after watching and going through your content and teaching it will be clear to understand for me So it's a request Sir please complete that part prior.......

@JeremysITLab 3 жыл бұрын

I'm glad my videos are easy to understand! But I will cover the topics in what I think is the best order, so I will leave those topics for later.

@RB-zu1kj 3 жыл бұрын

@@JeremysITLab Ok Sir no problem I will wait......

@CH-vv2hr Жыл бұрын

I have Network+ certification but CCNA makes it look like a baby

@nourkattawi2960 3 жыл бұрын

Hi Jermey in day 3 you said that the session layer is responsible for establishing managing and terminating the connection. How that is connecting with the transport functions? thanks

@JeremysITLab 3 жыл бұрын

In the OSI conceptual model there is a session layer that provides that function. However as I've said before modern networks are all built on the TCP/IP model, so the functions of the OSI model's upper layers are performed by the TCP/IP application and transport layers.

@PeterSaumur 8 ай бұрын

So, at the halfway mark, and I have to ask - Did supporter "Channel Failed To Load" ever get fixed? :D

@vulpritprooze 13 күн бұрын

Remembering these ports is a nightmare 😣

@aigoaizporietis9275 3 жыл бұрын

Can I have a link where i can purchase your course, and some small description, how it works and how it gets updated? Thank you

@JeremysITLab 3 жыл бұрын

You can purchase it here if you want: jeremysitlab.teachable.com/

@GG-xt7mq 2 жыл бұрын

why does TFTP in UDP segment file transfer usually need reliability ?

@LowerYourExpectationsPleb 3 жыл бұрын

leaving a comment for youtube algorithm

@JeremysITLab 3 жыл бұрын

Always appreciated ;)

@vaddepallyramakrishna1103 3 жыл бұрын

Sir, can you suggest me a CCNA(201-300) study guide for new syllabus. I am already having CCNA(R&S) second edition by TODD LAMMLE.

@JeremysITLab 3 жыл бұрын

I recommend the official cert guides by Wendell Odom.

@shafisaadat 3 жыл бұрын

Hi Jeremy, I don't see the link to flashcard deck download. Will you please put that link under the description for this video? Or, do we have to pay to be able to download the flashcards? Thank you

@JeremysITLab 3 жыл бұрын

Hi, it’s the top line of the description.

@bibinjoy8618 3 жыл бұрын

Do this handshake establish before each packet sent ?

@JeremysITLab 3 жыл бұрын

Not before every single packet.

@carterjanssen5353 Жыл бұрын

With the TCP sliding window. Is that limited by the MTU? Or would/could that alter the MTU?

@JeremysITLab Жыл бұрын

They’re not related - TCP window size is how much data can be sent before requiring an acknowledgment from the receiver. It’s not related to the size of an individual segment/packet. However, there is the TCP MSS (maximum segment size), which is related to the MTU. It determines the maximum TCP payload size.

@Eschatonx Жыл бұрын

Are all these bit lengths of the IPv4 header, Ethernet header, and TCP all really on the test? It feels really strange that an entry level exam would have details like this.

@johanna-bapt.martaasaeda9499 2 жыл бұрын

It's interesting that tftp uses UDP: I wonder why it doesn't have to be reliable... I used it for flashing routers and access points with firmwares. There is no real "application" behind it, which would take care of the reliability issues.

@JeremysITLab 2 жыл бұрын

Reliability is built into TFTP itself, I outline it a bit in the FTP/TFTP video of this course,

@johanna-bapt.martaasaeda9499 2 жыл бұрын

@@JeremysITLab Thank you very much for your quick reply ! OK, I'm going to wait till then. I'm looking forward to wireshark meanwhile: I wanted to flash a router with tftp, but somehow it's not working.