Computer Networking Full Course - OSI Model Deep Dive with Real Life Examples

Learn how the internet works in this complete computer networking course. Here we cover the fundamentals of networking, OSI model deep dive, networking protocols, devices, tools, and more with real-life examples.
Take part in the learning in public initiative! Share your learnings on LinkedIn and Twitter with #DevOpsWithKunal & don't forget to tag us!
Complete DevOps playlist: • DevOps Bootcamp
Complete Java DSA playlist: • Java + DSA + Interview...
➡️ Connect with me: www.techwithkunal.com
=========================================
Timestamps:
0:00 Introduction
4:50 How it all started?
17:38 Client-Server Architecture
22:00 Protocols
24:20 How Data is Transferred? IP Address
34:23 Port Numbers
42:25 Submarine Cables Map (Optical Fibre Cables)
48:00 LAN, MAN, WAN
52:20 MODEM, ROUTER
55:47 Topologies (BUS, RING, STAR, TREE, MESH)
1:01:34 Structure of the Network
1:06:33 OSI Model (7 Layers)
1:29:00 TCP/IP Model (5 Layers)
1:30:20 Client Server Architecture
1:38:18 Peer to Peer Architecture
1:39:52 Networking Devices (Download PDF)
1:43:05 Protocols
1:50:22 Sockets
1:51:10 Ports
1:53:12 HTTP
2:00:00 HTTP(GET, POST, PUT, DELETE)
2:04:44 Error/Status Codes
2:06:30 Cookies
2:11:00 How Email Works?
2:19:00 DNS (Domain Name System)
2:32:24 TCP/IP Model (Transport Layer)
2:47:35 Checksum
2:49:00 Timers
2:54:00 UDP (User Datagram Protocol)
3:02:05 TCP (Transmission Control Protocol)
3:09:10 3-Way handshake
3:13:40 TCP (Network Layer)
3:21:50 Control Plane
3:24:30 IP (Internet Protocol)
3:38:45 Packets
3:41:42 IPV4 vs IPV6
3:49:50 Middle Boxes
3:52:32 (NAT) Network Address Translation
3:55:40 TCP (Data Link Layer)
#networking #osimodel #internet #course

[@kalpeshmali1476]

This video has more content than my whole semester 😂 (6months)

[@aashraykatiyar4357]

😂😂😂

[@abhijithganesh2064]

Oh Bhai😂 I m in my first sem and I love this content already. I just can't wait for him to do something bigger. Every step of his is new records, I really appreciate it.

[@melomaniac7444]

@@abhijithganesh2064 tu krega kya bhai 1st sem mea

[@coderscode3859]

😂

[@niravprajapati6011]

Really

[@Chris-xc2zg]

I extremely hate my college lecturer who teaches Computer Network, looking forward to this course. Loved the DSA bootcamp so far!

[@zb2747]

I'm an hour in and man Kunal you really are a blessing to the dev/cs community! I've learned java and cs/concepts because you, I'm forever thankful! You explain everything so throughly and simply. Once again, thank you brother!! Much peace and love!

[@siriusblack1504]

I have learnt much much more in this 4 hour video, than I had ever learnt in my 3 year bachelor's degree in computer science. Keep making such awesome informative content! 🤯

[@KunalKushwaha]

Glad it was helpful!

[@softprob2838]

Is this Computer Network playlist complete for interview preparation?

[@bappirahman3294]

@@softprob2838 It's devOps playlist not computer network

[@Shravankumar_888]

jokes apart not true

[@factmania0803]

@@Shravankumar_888 nice joke🤣🤣

[@rithwikkrishna.]

OSI MODEL ALL - APPLICATION LAYER PEOPLE - PRESENTATION LAYER SHOULD - SESSION LAYER TRY - TRANSPORT LAYER NEW - NETWORK LAYER DOMINOS - DATALINK PIZZA - PHYSICAL LAYER

[@atkt9387]

it was good buddy

[@AzeemKhan-sn3yi]

aloo pakoda samosa teri naani do baar parosa

[@harshsrivastav4486]

Dhayan se padhai krte tho ye sab krne ki jarurat nhi hoti pizza pakoda ethaydi...🤕

[@coder036]

PDNTSPA : From down to up.

[@vishalranjan9593]

Please do not touch sexy Pamela Anderson

[@mohamedibrahim-qm1cr]

for those still debate on how transport and network layer work, understand it by visualizing a road(network layer) and a bus(transport layer) and the people in the bus (packets/information)

[@GuruTatvaConsultation-ib6fb]

Wonderful teaching. You made all diagrams. Cleared all curiosities. Kept the interest intact. You did not hurry up, you gave time to settle down. Perfect teaching. Rare to see good teachers. Thank you

[@arctanx5878]

Everyday 1 hour. It payed off! Thank you so much. I had zero knowledge, I feel now so much more confident about this topic!

[@bushranazish5543]

Was blown away by the content you covered in 4 hours. The video was interesting and easy. Kudos to your hard-work Kunal 👏

[@KunalKushwaha]

Thank You

[@softprob2838]

Is this Computer Network playlist complete for interview preparation?

[@kumarsamaksha7207]

@@softprob2838 Depends on the company some companies like go too deep in CN so I will take more time, for others this is enought

[@nickranjan8206]

If anyone wants notes pdf,I have it. Giving it for rs 50.

[@ChandraTech52]

@@nickranjan8206 ok

[@themanavpaul]

TimeStamps: Computer Networking 2:33 Introduction 4:50 How it all started? 17:38 Client-Server Architecture (brief) 22:00 Protocols (Brief Intro) 24:20 How Data is Transfered? IP Address(Brief Intro) 34:23 Port Numbers (brief) 42:25 Submarine Cables Map (Optical Fibre Cables) 48:00 LAN, MAN, WAN 52:20 MODEM, ROUTER 55:47 Topologies (BUS, RING, STAR, TREE, MESH) 1:01:34 Structure of the Network 1:06:33 OSI Model (7 Layers) 1:29:00 TCP/IP Model (5 Layers) 1:30:20 Client Server Architecture 1:38:18 Peer to Peer Architecture 1:39:52 Networking Devices (Download PDF) 1:43:05 Protocols 1:50:22 Sockets 1:51:10 Ports 1:53:12 HTTP 2:00:00 HTTP(GET, POST, PUT, DELETE) 2:04:44 Error/Status Codes 2:06:30 Cookies 2:11:00 How Email Works? 2:19:00 DNS (Domain Name System) 2:32:24 TCP/IP Model (Transport Layer) 2:47:35 Checksum 2:49:00 Timers 2:54:00 UDP (User Datagram Protocol) 3:02:05 TCP (Transmission Control Protocol) 3:09:10 3-Way handshake. 3:13:40 TCP (Network Layer) 3:21:50 Control Plane 3:24:30 IP (Internet Protocol) 3:38:45 Packets 3:41:42 IPV4 vs IPV6 3:49:50 Middle Boxes 3:52:32 (NAT) Network Address Translation 3:55:40 TCP (Data Link Layer) Hope that helps ! Lets Connect : twitter.com/themanavpaul

[@KunalKushwaha]

Thank You!

[@tesLaOP]

@@KunalKushwaha Hello bhaiya please tell me where to enter that $config me -s command on timestamp 28:00 I am using windows 10

[@akshatsharma3081]

@@tesLaOP cmd

[@siddharthsable7762]

@@tesLaOP might be something different on windows use WSL might work there.

[@movru31]

@@tesLaOP Open Window's Powershellor Command prompt. OR in linux simply in terminal.

[@Istudy.Ustudy.]

kunal ur making me to fall in love with computer science!! thanks a lot u seriously making complicated stuff very simple. u giving context and this is exactly how i love to learn.. thank u so much for spending time to teach us..

[@vidhijain2945]

The amount of hard work put in this video, great manh! Recording for 4 hours is not easy guys respect his hard work and be patient for DSA videos. Well explained Kunal 👏 kudos to the effort!

[@walterwhite3666]

Hey I'm not a web either Android developer can i learn this course I'm just following kunals DSA course ?

[@krishnamohan9216]

@@walterwhite3666 yes you can, it might helps to you when you're switching you're carrier

[@user-uh3vt8sw7w]

I was doing a project about this without even knowing anything about networks, only to have enough grade to pass. So I searched some videos to see if it would be easy and fun to learn this stuff. You made it incredible! Now not only I will be able to get a passing grade but also I learnt a lot about this subject, thank you.

[@Luxury3DHouse.07]

0:00 Introduction 4:50 How it all started? 17:38 Client-Server Architecture 22:00 Protocols 24:20 How Data is Transferred? IP Address 34:23 Port Numbers 42:25 Submarine Cables Map (Optical Fibre Cables) 48:00 LAN, MAN, WAN 52:20 MODEM, ROUTER 55:47 Topologies (BUS, RING, STAR, TREE, MESH) 1:01:34 Structure of the Network 1:06:33 OSI Model (7 Layers) 1:29:00 TCP/IP Model (5 Layers) 1:30:20 Client Server Architecture 1:38:18 Peer to Peer Architecture 1:39:52 Networking Devices (Download PDF) 1:43:05 Protocols 1:50:22 Sockets 1:51:10 Ports 1:53:12 HTTP 2:00:00 HTTP(GET, POST, PUT, DELETE) 2:04:44 Error/Status Codes 2:06:30 Cookies 2:11:00 How Email Works? 2:19:00 DNS (Domain Name System) 2:32:24 TCP/IP Model (Transport Layer) 2:47:35 Checksum 2:49:00 Timers 2:54:00 UDP (User Datagram Protocol) 3:02:05 TCP (Transmission Control Protocol) 3:09:10 3-Way handshake 3:13:40 TCP (Network Layer) 3:21:50 Control Plane 3:24:30 IP (Internet Protocol) 3:38:45 Packets 3:41:42 IPV4 vs IPV6 3:49:50 Middle Boxes 3:52:32 (NAT) Network Address Translation 3:55:40 TCP (Data Link Layer) Btw thank you for your dedication.🤗

[@kartiksharma7018]

This is been a super session on the working of the world of computer networking, now I am familiar with all the stuff like TCP/IP, OSI, UDP, Protocols etc. Thankyou very much!!

[@ADEEBARASHIDBAI]

Just now completed this 4 hours bootcamp. Trust me, he has covered the topics in depth. Loved it. Best for placement purpose.

[@sahilraj2374]

notes bnaye ho tum is video ka

[@developersfeed8352]

Thanks Kunal. This was a much awaited one course by you. I was thinking of switching the career in DevOps but didn't find out the resources a s a whole at once place and in a systemic way. Saw your whole syllabus for this course and it covers almost everything from basics to mastery. Thanks a bunch bro

[@AnandSharma-kz2bs]

Bro, Your work and Content can change one's life , you do what you say ... No any other course may come close to your content

[@KunalKushwaha]

I appreciate that!

[@PriteshDubey-nu6og]

U are a gem. I would never have learned these all concepts anywhere else. I am currently trying to follow both boot camp courses.

[@amanrajput574]

I couldn't appreciate enough for this. Your teaching manner is so nice that every concepts get without hurdles and like a Laminar flow.

[@mayurpai19]

How about mastering Computer Networking in just 4 hours? This course is for you. It has been constructed and taught exceptionally well. Unique content on a platform that is second to none. Please keep moving forward, you are an inspiration! ❤️✨

[@dudamneerajdattu1459]

is it good for placement puporse for a non-cs student, did he miss anything or left anytopics just by saying type in google like that because i saw some comments like this.

[@ShivaKumar-st9ps]

Hi Kunal, really high quality content, just completed till the OSI 7 layers and TCP/IP model, feeling like my own classmates are explaining to me in general. Thank you so much for this amazing course🥲🥲🥲🥲. I stopped regretting missing my University classes after this🤗. Will complete the remaining course. Great learning resource which can be completed in a single weekend. Just disabled my adblocker to support you from now on.

[@ShivaKumar-st9ps]

Just completed it.

[@faizanahmed9304]

@@ShivaKumar-st9ps well done

[@sanamirza9439]

Whenever he takes a pause I started all he said in my mind and brings my curiosity on high level!!!!!!! best tutorial for Computer networks

[@UdhayaDharshini-vv1bc]

I learnt all these in my college subject called DCN but i never got a clear picture of how the data flows. I always had some confusions and doubts. I have no words to thank you for the efforts you make to explain it clearly. The only youtuber I blindly trust without any second thought. Glad I came to know about your channel. Wish you reach more heights and get recognized for your hard work.

[@lilprotakeit]

you covered Programming, Networking and Devops (which is a combination of Networking + OS) but it would be great if you can do OS separately so that non CS guys like me can greatly benefit from this. I really love the fact that you alone are breaking the monopoly of these education mafias .. great .. god bless you and keep it up .. you have many big things to do

[@deepanshugarg8752]

Hey, praveen can you please elaborate on what you meant by ''monopoly of these education mafia''?

[@dumdumdumdum8804]

@@deepanshugarg8752 I think he lives in a well.

[@lilprotakeit]

@@deepanshugarg8752 sure .. when i feel like doing nothing !!

[@lilprotakeit]

@@dumdumdumdum8804 with 102 likes .. i don't need to respond to you frogs

[@spiritualjourney7376]

🥺🥺 such a awesome course at zero prize is a blessing for us. Thank you bhaiye for it. It really helping us a lot. Your DSA playlist is of next Lvl and I believe this will going to be more high quality than it. Bhaiya It will also be much helpfull if u will tell us more about remote job opportunity.

[@prasanthbugga8381]

completed the whole thing in a single sitting..the way of explanation is on another level.

[@njiahtata2267]

This video is very very explicit. Kunal has really broken down networking and I can clearly understand how the internet works. My college lecturers did a very poor job on this subject. Thank you so much Kunal.

[@lilyjoy1338]

Thank you Kunal for such an amazing video ! Never thought learning computer network will be such a fun.When I am making notes from ur video I feel like writing each and every word because everything you say is important and valuable on the topic, it's never time wasting or not useful .I am blessed to have you as a teacher.Thanks a lot !!

[@hussaingagan9196]

please can you share your notes

[@omkaranabathula2006]

Please can you share your notes. I have an exam coming up and need it

[@afridahamed3535]

Have been following DSA bootcamp, it'd be much helpful if it continues brother ❤️

[@PremKumar-ut9rv]

yes

[@afridahamed3535]

@@daruiraikage Bro, it's one "the best" available. If you haven't started, I'd suggest you give a try and decide for yourself. Kunal has covered in depth.

[@KunalKushwaha]

More to come!

[@kdpathak4788]

@@KunalKushwaha It would be great It you tell when the new videos of dsa bootcamp will come

[@vm1662]

This is a jackpot for people who are beginners and who are trying to re-fresh on this subject! Thanks a lot! :)

[@thedailymotivation660]

Thanks kunal like yesterday i have zero knowledge about computer networking and today i am feeling very confident that i know everything. Thank you this video has a lot of information than my whole semester.

[@dhirajsardar9619]

Timestamp: Computer Networking 2:54:00 UDP (User Datagram Protocol) 3:02:05 TCP (Transmission Control Protocol) 3:09:10 3-Way handshake I love this course of computer networking because Kunal gives real life exam for each and every concept so that everyone could connect to the concept and ideologies efficetively. Love from Nepal

[@deepakkhandelwal3342]

enjoyed the full course and learned a lot of complex things in a very simple ways . Thanks Kunal

[@pkn8707]

Thanks Kunal for the tutorial. It was really good enough to get started with networking and you have touched all the important points that are really required.

[@upsanddowns1]

Kunal Thank you so much for sharing this video! Your explanations are incredibly clear and easy to follow. You have a talent for making complex concepts simple and understandable. Keep up the fantastic work, and keep sharing your knowledge with the world. 🙌📚

[@sagarsingh4951]

Kunal should be called Professor from now on. This guy is becoming better and better at teaching.

[@akashbhoyar7403]

HELL YES TO THAT....:)

[@sarthakkhutafale350]

Kunal you are really doing a great job for the community. Just wanted to know how many total videos are going to come in devops bootcamp

[@rajitpaul4676]

Awesome, thanks so much Kunal! You are a savior for all the students, grateful to receive genuine content.

[@TheEverythingNish]

Really enjoyed your way of teaching!!!! Looking forward to completing the full course! Thank you so much for doing this. :D

[@vikranttyagiRN]

This man is single handedly changing lives and the literal definition of one man army.

[@_ShivaniYogi]

Indeed an awesome explanation of networking ! Couldn't be more thankful !!❤ even college professors should watch this course so that they understand ki computer networks 'padhaate kaise hai' !🙂

[@sumanthkonthala9682]

🤣🤣🤣😂😂 should i tag them 🤣🤣🤣

[@oestintech]

True they made these subjects hell in engeneering

[@kingofkings6302]

@@oestintech can't agree more..

[@ohokie4558]

@@oestintech which sem deals with this topic ?

[@aeroabrar_31]

@@ohokie4558 5th sem

[@venkatt306]

Thank you for making such an amazing video, Kunal. Love the way you structure the content in the video . 💚

[@ebukachuqz]

I never new networking could be explained this simply. Damn, I was so interested after 20mins. Thanks kunal

[@santoshvarma6158]

Thanks for this course Kunal. You're letting students get exposure of several technologies♥️

[@Sailendranath_Thakur]

Was searching for gold, found diamond. Thanks for the video. Very informative and explained in a "easy to understand" way.

[@RajatKumar-yi2cf]

Thanks a lot Kunal for such an amazing and informative content and also the way of teaching and explaining things in such an easy way is amazing i really loved the content and appreciate the efforts, each second of this video is worthy and informative not even a single second is wasted please make more such videos on other core subjects as well like OS and DBMS

[@adrishbora]

Awesome! Took me 2 days to completely watch it, but man it was worth it, love your work Kunal!

[@mdmozammilraza3215]

Much beneficial to crack HR round in computer networking. Thank you Bro. Keep it up 😊😊

[@softprob2838]

Is this Computer Network playlist complete for interview preparation?

[@yuktaagrawal9890]

@@softprob2838 did you get an answer?

[@Dope619]

Kunal bhai thankyou so much for all these courses. Again saying this "You are doing a great work" ❤️

[@fankbank4921]

Bhay tu album ki chinta kar, yaha kaha aa gaya 😳😳

[@Dope619]

@@fankbank4921 vo album sun ne se gharpe Paisa nahi aayega Mujhe 40LPA uthana h life mei😊

[@fankbank4921]

@@Dope619 faxxxsss tho

[@DJ-ff2ex]

@@daruiraikage once a legend said: shemde artist ko nhi deta bhau

[@dakshsinghrathore1756]

@@Dope619 All the best stan bhai

[@adarshvasu9195]

4 days of continues learning had a good result . thanks kk and lets have this Devops bootcamp the best .

[@shija888]

Excellent teaching... impressed...i wish ,if every college or university had your kind of teacher...

[@kirankumarks4993]

Very usefull session. Excellent explanation. Even we can understand by setting the playback speed by 1.5 which saves lot of time.

[@meetsoni1938]

Completed in one go 🔥🔥🔥💯💯 highly appreciated your efforts

[@saurabhbisht9280]

Dude you have nailed it, explained the topic in so much easier way .Appreciate that

[@syamsundar6684]

This is the best course i have seen in my entire life. I changed my life after watching kunal.

[@shafaq-here]

Hit like if you want Kunal to finish this bootcamp in less than 3 months...

[@prajapati_omkar]

Thanks Kunal for creating such a amazing educational content for us ✨ Huge respect to you from my bottom of heart.

[@akashkb6905]

You can watch this video without a break. Content is so amazing. Thank you Kunal for this amazing video.

[@webhost2600]

hey kunal you are doing a great work 😃 Well-Known Ports: 0 to 1023 are known as well-known ports Registered Ports:Port numbers from 1024 to 49151 are registered ports Dynamic or Private Ports:Port numbers from 49152 to 65535 are dynamic or private ports. They are often used for temporary purposes, and applications can dynamically choose an available port from this range.

[@ateetharun7212]

This is really helpful kunal. I am currently doing your dsa bootcamp and it is actually wonderful the assignments you provide for practice. I have just finished arrays(the initial few videos) and i am really getting a deep understanding about dsa via your videos and the leetcode questions you provide for practice. Hope i am able to stay consistent with all this quality content you are providing us with . Also very excited to pursue this devops bootcamp alongside with java dsa. Also i feel the dsa course u provided can be best utilized if we r consistent with solving assignments as soon as we finish a topic.I intend to do it with my own pace and also love the quality of content you provide for us for free. Keep it up and thanks a lot for this.

[@bagavathikrishna9290]

Watched the complete 4hr video. It was a good refresher on how internet works. Great work kunal👏.I am currently working in a MNC(

[@softprob2838]

Is this Computer Network playlist complete for interview preparation?

[@dudamneerajdattu1459]

@@softprob2838 is it good for placement puporse for a non-cs student, did he miss anything or left anytopics just by saying type in google like that because i saw some comments like this.

[@dudamneerajdattu1459]

is it good for placement puporse for a non-cs student, did he miss anything or left anytopics just by saying type in google like that because i saw some comments like this.

[@darshanhegde1265]

This tutorial made me to love the computer network subject. Truely it gave complete practical knowledge about the subject. Thank you so much Kunal

[@pppp-ij8tk]

Just Completed this. So glad u made it easy for us to get the gist of networking. Thank You

[@subhamsaha9944]

Kunal its a humble request to you. Please make a brief video on Operating System. Your teaching is always on point. I hope you'll read my comment one day. Love from West Bengal ❤

[@KunalKushwaha]

Sure I will

[@lilyjoy1338]

Yes Kunal it will be kind of you if you make a video on OS . You are the best teacher.

[@rishabhkumar500]

I would also love that

[@sakethkumar5632]

if there is a word that is supreme of all the appreciation words, I think he deserves it. only goosebumps for your knowledge brooo you are an inspiration!!!

[@shamilrasheed6427]

I really loved this course. Even though this was one of our paper, your way of explaining is great Kunal. Keep up the good work!

[@therealshadowz4499]

Thank you my friend, this was an amazing tutorial! Thank you for taking the time to make such a lengthy detailed video for us all!

[@plsdonthateme8688]

Just finished the course and all I can say is that it was an amazing experience. I'm learning to works on the cyber security field, not Devops but this course surely had cover so many helful information of networking which is also related to cyber securty. Love your videos.

[@muneshwarsinghal655]

hi bro can i start this course if I have not much knowledge of coding

[@plsdonthateme8688]

@@muneshwarsinghal655 absolutely. This course is a networking course and it doesn't has anything related to coding.

[@abhimanyuajudiya9942]

fun fact: Tata is responsible for over 130,000 miles of fiber cables under the sea and 400 PoPs, connecting more than 240 countries and territories around the world. Tata equips 1 million square feet of data center and collocation space worldwide. Which is 24% of all around the world.

[@shikharuniyal9985]

As someone who has no understanding of networking and is not a developer, I still understood most of the concepts without using google much. Great work man.

[@prathameshsinkar6533]

literally in just 2 days i became admirer of this guy and his unbelievable potential

[@vipulsharma0052]

Hey! Kunal.. Your content is awesome 🙂 And I request you to add notes or screenshot of the pages in drive or pdf format by which we can revise the things forgetten in the future...... Please add in the description of the video.... How many of you want this???

[@ankush9117]

Watching this with 0 knowledge of Computer networks and I have an interview on the 5th of April. Will update after 5th April. Hope for the best

[@samialvi4226]

must give your feedback

[@AJ-wf3wp]

Waiting for your feedback

[@chandu5248]

What happened bro

[@samialvi4226]

@@chandu5248 Bro died at the mid of Interview 🥲😭

[@chandu5248]

@Sami Alvi seriously.?

[@jigeeshasur3028]

I'm in an IIT and this is a crucial resource in my internship prep. Keep up the good work.

[@koderchit]

This is a great resource for learning computer networking basics. Thanks a lot for this. Keep up the good work :)

[@av21015]

it was awesome till you said MAC address keep on changing. Took me some time to research and get it clarified. for those who didn't understood it here is the explanation. A MAC (Media Access Control) address is a unique identifier assigned to a network interface of a device, such as an Ethernet card or a Wi-Fi adapter. It is used to identify the device on a local network and is usually assigned by the manufacturer. As a data packet travels from one device to another, the MAC address of the source device remains the same, it is the destination MAC address that changes. The destination MAC address is the MAC address of the next hop device, it is the device to which the data packet is sent next. When a data packet is sent by a device, the device adds the destination MAC address to the packet's header. As the packet travels through the network, each network device that receives the packet examines the destination MAC address in the packet's header to determine if it is the intended recipient. If the device is not the intended recipient, it examines the IP address in the packet's header and uses routing tables and algorithms to determine the next hop, the next device to which the packet should be sent. The device then changes the destination MAC address in the packet's header to the MAC address of the next hop device and forwards the packet. In summary, as a data packet travels from one device to another, the MAC address of the source device remains the same, it is the destination MAC address that changes. Each network device that receives the packet examines the destination MAC address in the packet's header to determine if it is the intended recipient, if not it uses routing tables and algorithms to determine the next hop, the next device to which the packet should be sent, and changes the destination MAC address in the packet's header to the MAC address of the next hop device and forwards the packet. Basically when your data packet is on global network it has global IP addresses. which router will look to get the next hop's MAC address. when you are on private network we use private IP address to get the next hop's MAC address. both the cases we find the MAC address from routing tables. Note that routing tables in global network is different from routing tables in private network. Say we are connected using wifi to a private local network before the last hop the last before node will load the MAC address our PC's wifi and send it to our PC. It will get that MAC address again from routing table.

[@abhishekgopinath4608]

Did you mean each device which receives the frame will check the destination IP address to see if it's the intended destination because the frame is hopped to the next device having the MAC address right so it is the intended destination according to MAC address in the header.

[@parthphalke4444]

Placements are going on in my college rn and I had 0 knowledge of Computer Networks so far. I have learned a lot from this single video and am now confident enough to face questions on this topic in my interviews. Thank you!

[@parthphalke4444]

Update: got placed as an SRE in a reputed company with a decent package :)

[@hustle4902]

Cheers mate

[@sairam-nf3pj]

First while watching KZbin videos I never get bored and distracted.excellent and excellent explanation. This is even first time I'm giving comment for KZbin. @kunal your the genius and goat

[@ankitgoyal8556]

I hated networking during my college, but to become a better developer started understanding the concepts. Thanks Kunall for this great video.

[@maharshisinha8972]

Kunal's Video uploaded : le everyone hum first hum first 😂💖

[@wh0sumit]

😂😂

[@maharshisinha8972]

@@wh0sumit relatable na 😂

[@cyborg8497]

🤣🤣

[@maheshc1417]

it is like entire sixth semester of engineering computer network summarized in four hours, wish they explained to me this good in engineering college

[@SandeepThota12]

Man, I love this course. Kunal, You are AWESOME!!!!!!!

[@politicsarena09]

Really guys, this video was very helpful for me to clear my university exam . Thanks to kunal bhaiya to provide such a amazing content for free.

[@aashutoshkumar5672]

Timestamps: 0:00 Introduction 4:50 How it all started? 17:38 Client-Server Architecture 22:00 Protocols 24:20 How Data is Transferred? IP Address 34:23 Port Numbers 42:25 Submarine Cables Map (Optical Fibre Cables) 48:00 LAN, MAN, WAN 52:20 MODEM, ROUTER 55:47 Topologies (BUS, RING, STAR, TREE, MESH) 1:01:34 Structure of the Network 1:06:33 OSI Model (7 Layers) 1:29:00 TCP/IP Model (5 Layers) 1:30:20 Client Server Architecture 1:38:18 Peer to Peer Architecture 1:39:52 Networking Devices (Download PDF) 1:43:05 Protocols 1:50:22 Sockets 1:51:10 Ports 1:53:12 HTTP 2:00:00 HTTP(GET, POST, PUT, DELETE) 2:04:44 Error/Status Codes 2:06:30 Cookies 2:11:00 How Email Works? 2:19:00 DNS (Domain Name System) 2:32:24 TCP/IP Model (Transport Layer) 2:47:35 Checksum 2:49:00 Timers 2:54:00 UDP (User Datagram Protocol) 3:02:05 TCP (Transmission Control Protocol) 3:09:10 3-Way handshake 3:13:40 TCP (Network Layer) 3:21:50 Control Plane 3:24:30 IP (Internet Protocol) 3:38:45 Packets 3:41:42 IPV4 vs IPV6 3:49:50 Middle Boxes 3:52:32 (NAT) Network Address Translation 3:55:40 TCP (Data Link Layer)

[@nickranjan8206]

If anyone wants notes pdf,I have it. Giving it for rs 50.

[@AbhayKumar-rj3bk]

​@@nickranjan8206of this series??

[@ShootOniPhone914]

nice

[@dwizswapnil]

Just finished this masterpiece , Its really amazing Kunal ...Looking forward to more DevOps Tutorials very soon..but I have one doubt as its a total theory and very difficult to remember all the terms always in your mind. Please make a summary note, I know you told in the video that make your own notes, but short summary notes will be much appreciated. Thanks brother 🥰

[@totallyreal1476]

haan bhai. sab kuch wahi kar dega. tu bas video dekh. padhiyo mat.

[@adityapal7503]

Probably a complete networking fundamentals in a single video ! kudos to you buddy .

[@informationsatellite5155]

the way you teaches is really amazing n easy to understand everything.it helps a lot to us.thank you very much kunal sir

[@yashverma5451]

Please continue the DSA bootcamp. We are waiting for next video

[@BharatSingh-qw7zw]

Took me 5 days to complete (with notes). Looking forward for new lectures. Keep up the great work Kunal 👍

[@AnkushKumar-mk8ns]

Can you provide us the notes:?

[@ashisharyan3028]

can you share the link of notes?

[@barebears289]

Please share your notes

[@harshithguptaaa6787]

yeah even I need notes

[@ishmitapaul7559]

Please share the notes.

[@yrohithreddy9]

In this video I got to know about how things work internally at minute details. Thanks kunal !

[@prasanthkumar6393]

no words to describe about the video. Kudos Kunal. got full clarity

[@reddydivya8055]

Just completed the Computer Networking Course. Really blown away by the content you covered in 4 hours. Thank you for giving us such awesome content.

[@softprob2838]

Is this Computer Network playlist complete for interview preparation?

[@nickranjan8206]

If anyone wants notes pdf,I have it. Giving it for rs 50.

[@praveen_meena]

have you made the notes of CN, please share it if you made

[@praveen_meena]

@@nickranjan8206 I want

[@lakshaydahiya618]

@@nickranjan8206 ye krle tu pehle , vha kunal bhaiya free me pdha rhe aur tu notes bhi nhi de skta

[@basawarajshivashetty5232]

Hatsoff man!! I would love to see an operating system session as well👍👍

[@KunalKushwaha]

Will do soon

[@girishnakate5014]

@@KunalKushwaha DBMS also please

[@abishasherlin5896]

@@KunalKushwaha please do soon before my interview

[@yashpunjabi4230]

Thank you Kunal for sharing the knowledge in simple way. It helped a lot Just one correction in protocols timestamp it is POP3 & IMAP (you wrote IMAC)

[@Djena17]

Hi Kunal, your videos are making things easier to understand. Really very good job done by you.

[@pkknowsnothing]

Commonly Oriented Machine Particularly Used for Training, Education & Research. That's the full form of COMPUTER. Already started loving the course.

[@yamini436]

Common operating machine purposely used for technological and educational research

[@pkknowsnothing]

@@yamini436 both means the same😆

[@heyutkarshh]

No Computer Networking course could match this level 🚀

[@hanshusyed-lq5ng]

Thankyou Kunal 🎉. For the first time I learned computer networking within 2 days. You taught the best way that every student will get the best depth knowledge on the subject. Thankyou so much. Really very easier way to learn with you. ..😊😊.. Can you please tell me how to download the pdf..😢

[@rutiksanap6069]

Thanks Kunal for this Wonderful Tutorial. Now I got very good understanding of Computer Networking Domain.❤️