How do networks actually work? | Free CCNA 200-301 Course | Video #10

[@jugurthagreen900]

i just can't understand why you only have 253K subscribers , you really deserve 5 millions at lease.

[@davidbombal]

Thank you! Hopefully one day :)

[@user-vh2mi1me7t]

Now its 800k subscribers...nearly 550k subscribers in just 1 year😳

[@michaelbryant3643]

It’s kind of a niche that’s why.

[@macbethmabena9816]

No he can't teach everyone this. we need to be the only ones who make money. not everyone😅😅😅😅😅. but I'm happy Mr David you have now 900k subscribers.

[@OlympusOdysseus]

2.64 Mil, half way there

[@ajjimenez5710]

Amazing. I'm brand new to the world of IT and making a mid-life career change form the medical field and I have to say the granular care and attention he puts into these explanations is absolutely essential to my understanding. Most instructors I think lose touch with the beginner's mind because they have lived so long in the world that they are trying to describe to the newcomer, but David seems to have an intuitive understanding of the more conceptually challenging areas in these technologies, and approaches them with tenderness and understanding I've seen from very few instructors in my lifetime. Bravo!

[@swapnilshingote8773]

Legend... Respect...love from India 💙

[@davidbombal]

Thank you Swapnil!

[@davidbombal]

Menu: Overview: 0:00 Topology: 0:39 Devices at your home: 1:10 IP lights demo: 2:03 Packet Tracer Lab: 2:54 ARP: 3:31 TCP 3-way handshake: 6:10 HTTP message: 6:35 How are higher layer protocols referenced? 7:08 Ethernet Type Field: 7:47 Layer 3 Protocol Field: 9:29 Port numbers: 10:30 Server Services: 11:40 Dynamic / Private / Ephermeral Port numbers: 13:34 What to learn for the CCNA exam: 16:19 What about return traffic? 16:52 Thank you to my supporters: 19:08 Packet Tracer lab used in this video: bit.ly/tcpipmodellab CCNA 200-301 Playlist: kzbin.info/aero/PLhfrWIlLOoKPc2RecyiM_A9nf3fUU3e6g Support me via thisisIT: 👊👊👊support the mission, join thisisIT: bit.ly/thisisitccna Or, buy the CCNA course and support me: DavidBombal.com: CCNA ($10): bit.ly/yt999ccna Udemy CCNA Course: bit.ly/ccnafor10dollars GNS3 CCNA Course: CCNA ($10): bit.ly/gns3ccna10 ====================== Special Offers: ====================== Cisco Press: Up to 50% discount Save every day on Cisco Press learning products! Use discount code BOMBAL during checkout to save 35% on print books (plus free shipping in the U.S.), 45% on eBooks, and 50% on video courses and simulator software. Offer expires December 31, 2020. Shop now. Link: bit.ly/ciscopress50 Boson software: 15% discount Link: bit.ly/boson15 Code: DBAF15P

[@benoitlominy5871]

I want to know what software you used to do your videos .Please can you share with us. Thank you

[@davidbombal]

I am using Camtasia.

[@benoitlominy5871]

@@davidbombal Thank you David , you are a great teacher ,I used your course on Udemy too. Thanks for everything

[@mahdihassan9612]

your packet tracer lab link is not working. I tried a couple of time in between 4-5 am.

[@kunal9355]

@Davidbombal What wire you used?

[@sapphireharris6953]

I definitely understand protocols better now. I took my time with pausing and rewinding the video while taking notes so that I can comprehend it fully. Even though this is only a 20 min video it took me longer to go through because I actually practiced with the lab too and I can say it was well worth it. Thanks David!

[@GajendraKarle]

David brought not just motivation, Along with there is lot more glamour than movies.

[@hydraschool]

I am the best learner and you're the best guide, source of information, master, and my teacher, thank you so much for doing this, I am your constant Student, greetings from Colombia.

[@gorge5412]

DB, you are magnificent. Thanks for everything.

[@Ca7iburn]

Aaah! Now the penny dropped! 13 years after conpleting my CCNA. I just thought of the port numbers on the server side and never thought of the port numbers on the client side. It is nice to just go through the content, refresh my memory and see what changed. (Without the stress of exams in my case ;) ) Wish I came across your channel earlier.

[@Lucasmathews]

Best video yet in the series. Really liked the choice in which details to go over. I bet & hope the quality of this series continues. Great Job David!

[@sultonmurod8421]

Hey David! I really appreciate your course. It's really high-quality product. Thank you a lot!!!

[@davidbombal]

Glad you are enjoying it Sultonmurod!

[@nasirrahmatullah141]

Love from Bangladesh 🇧🇩 ❤ I like your videos very much and it's very knowledgeable and informative for a teenager like me.

[@mostfaatia6852]

00:00 Learn by doing, not just watching 02:15 Devices can be connected via IP or Bluetooth 04:35 A TCP three-way handshake is performed before sending an HTTP packet. 07:07 Devices use the Type field at layer two to determine which protocol stack to use. 09:23 Understanding TCP/IP Protocol Stack 12:08 Port numbers are used to send data to the correct application or service. 14:37 Different operating systems use different port number ranges 17:09 Explanation of how MAC addresses, IP addresses, and port numbers get swapped during communication.

[@himmetcetin1075]

It was the best narration I've ever heard. Thank you for your effort .It's good when you share information.

[@noorurrehman3431]

You are an ingenious teacher ever ! Lots of Love and Respect.

[@samueldasmianus6151]

I always waiting for your free CCNA course everyday. Thank you sir 🙏🙌

[@davidbombal]

Thank you for watching Samuel!

[@samueldasmianus6151]

@@davidbombal my pleasure sir 🙏

[@kennethazubuike4070]

Dav I love you so much thanks your teachings have motivated me a lot

[@BeeBumper]

I have been taking your CCNA course on your website, I booked my exam and have been doing some practice tests, most of the time I have no problem verifying why some answer is not what I thought it would be but this one sticks in my side and I wanted to know what your feeling on it is: The question is quite simple really: What command configures a switchport using the default Vlan? I think because all ports are in vlan 1 by default that just making it an access port is all that you need to do, and that is debatable as it is usually by default an access port anyway. So I said "switchport mode access", rather than "switchport access vlan 1" because the ports are in vlan 1 by default. Any other vlan, I would say "switchport access vlan X". The answer is supposed to be "switchport access vlan 1" but to me that is redundant, and unless specifically stated it is in another vlan, this would be unnecessary. Am I over-complicating this question?

[@ZeeshanUsmani_EngSubs]

I really appreciate your way of teaching.love u from Pakistan

[@michaelbryant3643]

Omg I just realized the PDU is the OSI model. This helped so much! Reading about it for months lol

[@heygourab]

Best teacher love from india.

[@furry541]

Thanks for this amazing video, you deserve more views 💝💝💝

[@Mustash-Tony]

I feel like I might have skipped some prior critical information because I'm lost. 😂 Update: After watching this 5 times it finally started making sense.

[@grahamfinlayson18]

Superb content. Outstanding.

[@davidbombal]

Thank you

[@sergiomancera9225]

Thank you David. I will view this video for more than one time I think, for now, at the same time I'm learning Packet tracert. Greetings.

[@KenSherman]

3:00, 6:00 Key: Simulations are fun.

[@carlosbatista4202]

Love this videos, Thanks for guiding me for my future !!!, Thanks so much :)

[@lluiszuranoforest1032]

A fantastic professional explanation, very much thaks. Dank u well maner.

[@educastellini]

-Great video...!!! -I was studying for a few years how to make a system for monitoring servers and equipment in my corporate network at the time, that was almost 10 years ago, and I used two Xeon servers one with Nagios installed and another Xeon Database server to then assemble with pcs with the system Linux acting as probes on each monitored network and with that all set up a map with all servers and service statuses running on them and create a map for monitoring all systems. -But now I run the full Nagios server on my Linux desktop and if I wanted I could install a full server \ probe running on a 40 dollar Raspberry Pi instead of using a Xeon server that costs 10 to 1000 times more. -Funny how the technology evolves but the monitoring protocol that I studied at the time to set up this server is still the same SNMP. -Thanks for the video please continue ... !!!

[@jugurthagreen900]

you're a legend, love from Algeria.

[@davidbombal]

Thank you Jugurtha! Glad to have you here.

[@monetka79]

1000 times THANK YOU!

[@davidbombal]

You are welcome Alyona! Hope you enjoy the long video today!

[@monetka79]

@@davidbombal yes, I did, thank you! I am looking forward for your next video!

[@susmitamazumder8390]

Hello Sir could you please provide the details about how did you build that topology and configured....

[@GonzaloSanMartinr]

I look forward to the next class, thank you very much.

[@iqbalalam35]

i like your way of explaining the topics and presentation you put with so much efforts.THANK YOU FOR MAKING NETWORKING SIMPLE LOTS OF RESPECT ....

[@davidbombal]

Thank you and you are most welcome :)

[@TradingTitansCo]

Nicely done, David!

[@kaidakemes1260]

U really teaching thanks alot. I failed 4 times. Gon try again

[@abhishekdasghose9]

Thanks for keeping us motivated, through your awesome and magnificent lectures..... God Bless You

[@ArthurCor-ts2bg]

Hi David, Good job done.... Excellent technical articulation

[@francescolucia1341]

David your are The Best ! Thank you for show us

[@GonzaloSanMartinr]

I really appreciate your course

[@jarofpopsicle]

I really enjoy the videos! Thank you!

[@davidbombal]

Thank you for watching Jar!

[@amitvishwakarma961]

Useful information about networking

[@mahdihassan9612]

Your course is great. It would be much better if you increase the video length up to 4-5 minutes with more details so that in the interview we don't have to face difficulties. Now I am a final year cs student, want to make everything clear about networking before learning cybersecurity.

[@ishakfilali4168]

i cant find Packet Tracer lab used in this video. does anyone have it ?

[@cthoadmin7458]

Can I ask a newbie question about your example? Suppose I’m 192.168.1.1 and I want to communicate with 192.168.1.2, connected to the same switch. Why would I need to use ARP to get 192.168.1.2’s MAC address? Surely the switch knows this already, as it has to build up an internal lookup table of IP addresses versus MAC addresses, so it knows where to send my communication? Wouldn’t such a lookup table be built up when each device is first assigned an IP address, either by DHCP or manually. Doesn’t each device on power up do something like broadcast “Hi I’m here and my MAC address is blah, please give me an IP address”.

[@shaileshsindur2695]

I am from india . your teaching style is best and unique to understand everyone. Hats of you Sir..

[@kevinhernandez-jg3is]

David great content 👌 but thing can you post the topology if you are use one topology for this whole ccna review.. if not no worries.

[@davidbombal]

Thank you Shailesh!

[@davidbombal]

@@kevinhernandez-jg3is I will be using different topologies and labs. You can download this topology using the links in the video description or pinned comment.

[@kevinhernandez-jg3is]

@@davidbombal thank you for the quick response from your busy schedule you have been amazing help in my career

[@KiranKiarn-y9x]

sir please make latest videos on ccna and ccnp

[@Satwat17]

as I am starting learning , so far all was good, but here I am stuck, I need some time to understand these things, I am looking for if there is any documentation of this content available.

[@MrPetchiram]

Sir, An out of box question, If world war 3 happens what would happen to internet ? Whole internet got shutdown ? or it will work ?

[@neelgohel335]

Appreciate your quality content.👍

[@davidbombal]

Thank you! I really appreciate that :)

[@sepehrnickaeen7620]

thanks for the knowledge you are the best

[@soltaniyassine8335]

Thank you so much for this knowledge

[@uttamsharma2731]

How do these services know the location by IP address? Do they get these details from ISP?

[@sherukole6109]

Thank you, you are sharing very good knowledge. I'm so glad If you ever come to India, you must come to my house, you are one of my guests. Forgive me if I say something wrong.david sir

[@davidbombal]

Thank you Sheru. That is very nice of you :)

[@whakjob]

@@davidbombal We have a saying "Guests are Gods" I guess he was trying to say that you are like a God to him as well as many of us. In that vane he wanted to make an honor I believe :)

[@davidbombal]

@@whakjob Thank you for explaining. I really appreciate all of you from India! Thank you.

[@ahmadghamsarian9245]

Thanks for everything! love from Iran

[@davidbombal]

Thank you Ahmad

[@diausabastien1458]

Hello sir,what do you do when the file is not compatible with the latest Packet tracer?

[@aithaddou2731]

Hello David, The link of the lab doesn't. Could you fix this issue, please ?

[@samduplama8943]

Sir Can you explain a bit on in, out, inbound & outbound? I didn’t understand these.

[@photogeekco]

Thanks for this video, David! It would be great if you can share saved topology file.

[@justarando6693]

"An this is why TFTP is the best protocol from the FTP group - it have a superior port number" :P

[@syohm7782]

Hi Sir David may i ask if the encapsulation of the layers happens right before it travels through switches and routers? Thank you very much

[@vaishnav343]

Very well explained. Thanks a lot sir for ur videos. Waiting for a video on mpls too.

[@qutaara3454]

Yes you are right, I don't understand by watching, well no one will. But I'm trying to see what you doing to apply it to my java code which I'm working on right now : - ) same topic but I'm a little bit stuck with the language(java), haha And... Thank you for all those free contents and deep explanations, I really appreciate that😀🖤

[@davidbombal]

Thank you! Sounds very cool. All the best with that Java coding!

[@oludayod7757]

Thanks So much prof.👍🤔 👍

[@na937]

Vera level explanation 👍.

[@giangtruong-ev7sy]

hi Bombal, between GNS3 and cisco packet tracer, so which one do you recommend using? I'm using GNS3 right now and my laptop can't run the Cisco packet tracer at the same time

[@jo3_flash672]

David, what keyboard are you using in this video?

[@adiflorense1477]

Love from indonesia thank a lot!

[@aldomargjeka4074]

@🌟David Bombal I have a question,where is the diagram that represents internet in the cisco packet tracer,because I can't find it anywhere?

[@seano7173]

Go back to Video Segment 2:03, ISR 4321 is the IntRouter or Internet Router connected to the Cloud. Which represents the internet

[@MrWinfil]

merci chef t'as bien expliqué . continuez.

[@ajitgeorge2893]

Are the videos on udemy the same?

[@CHRIST-TECHNELOGOS]

Please sir I can't find the packet tracer file .

[@riskrunner8035]

Hy David. First of all your course amazing. I am curious what do u think. A ccna exam practice service like alphaprep is mandatory for a success first try ccna or this is just a plus inventory. Many test teaker complain that ccna exam question was too tricky and tha5s why they failed the first exam so because of this an exam practice tool is essential before go to exam.... i really dont know...

[@vladimirmisin1876]

Why are the connections orange in my lab ?

[@ahmadmousa182]

Awesome you are a legend thank you

[@davidbombal]

You're welcome!

[@mohamedhadjmimoune8665]

I hope mr.david when you upload the encore video to add tshoot course add to encore

[@gotoabid]

Awsome I really like the video Specially example of 🚲 👍

[@davidbombal]

Thank you for watching Mohd

[@susmitamazumder8390]

Hi all I am trying to create the topology just like him but its not working. I am having red between router and switch connections. If he shows clearly how create the topology it would be great. And what connections we should use between devices and between router and switches. Anyone could help me. Thanks in advance

[@josecubas9460]

Regards from Peru

[@johancornelis3719]

love to learn from you, David. When I try to open the TCP_IP_OSI_Model.pkt file ..I get the message that it is not compatible with my version of Packet Tracer. Are there others whith the same error?

[@mack126]

I had this error with version 7.2.2 of PT. Just get the lastest version available. It works fine with 7.3.1.

[@djnikx1]

Thank you buddy!

[@dieagentur6136]

Great videos really! I'm new to the whole Networking thing, really trying to learn this, the previous ones were fairly crear and easy, but I must say this one at minute7 it sounded to me a bit like the Dutch Jiskefet group doing the 'Stiften' sketch... (if you understand Dutch / similar to Afrikaans watch it and see cult Dutch humour). Anyway, I don't understand what you mean by 'take a look at those protocols yourself'. What am I to do ? learn the numbers by heart ? try to read source code or something like that ???

[@iamsubingyawali]

What do inbound and outbound mean?

[@Jeff-Ray]

Hello David, awesome video - thanks for that! Can u help me with a question i have? i do the free quizzes on your website almost daily. can u tell me what wordpress Plugin you use for that? i would love to get my hands dirty with it :D thanks alot!

[@sherukole6109]

I Will wait for your message sir

[@kaidakemes1260]

I miss by 23 points a d fail. My net+ compitia

[@kyriakoskarda6978]

where can i download the file ?

[@claussanta2341]

FTP(data) 20 FTP(control) 21

[@akshay7820]

Sir, Do video about wireshark

[@oludayod7757]

He said he will do that later 👍💯

[@anandakrishnanr3656]

Do I want to create an account to download Cisco packet tracer.?

[@oludayod7757]

Yes. You have to, for me I had to download Google authenticator (is optional) you might not to need that.

[@anandakrishnanr3656]

@@oludayod7757 thank you so much

[@oludayod7757]

@@anandakrishnanr3656 You're welcome

[@sherukole6109]

I would be lucky if I ever get a chance to meet you. Sir I humble request for you

[@praveencharan1635]

Hi David, I'm from India interested in hacking ,can u suggest me how to start

[@realistic795]

One question , will ccna certification be useful nowadays?

[@tahersadeghi6773]

Seeing is believing!. Old IT proverb!.

[@samucancld]

Buenísimo loko

[@carlitodidthat]

U havent explained much what ipv4 is or ipv6 is

[@sithuaung120]

I like your speech, you should learn how to ride bicycle by riding it yourself not watching. That is true in other filed like science, practical is very important in learning.

[@davidbombal]

Thank you. Doing is much better for learning than just watching someone else.

[@pcplayer0079]

Please Please Please tell me how to hack any wifi

[@jayeshnagmoti5009]

Legend

[@davidbombal]

Thank you Jayesh :)

[@juliarekamie]

Tnx!

[@davidbombal]

Thank you for watching Julia!

[@juliarekamie]

David Bombal am working as art director at 🇺🇦 internet provider, and just finished some Cisco books, so practice is needed 🙏🏻🐝

[@davidbombal]

@@juliarekamie Packet Tracer is great for practice :)