What is DNS? | How a DNS Server (Domain Name System) works | DNS Explained

DNS Domain Name System is the backbone of the internet. What is DNS? How does DNS work? This is a DNS explained tutorial I show you what a DNS server is and how it works. It explains the different levels of DNS, such as the resolver, root server, domain server, and authoritative name server.
I am Priyanka Vergadia, Developer Advocate for Google Cloud, for more content
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📌 GCPSketchnote Playlist - bit.ly/3jA8Ylz
📌 Visit my website to download the sketchnote image - thecloudgirl.dev/
#DNS #Internetfundamentals #cloudcomputing #technology #internet #howdoesinternetwork

[@anup_narvekar]

One of the most accurate explaination I've seen without much abstraction, even took caching into consideration. Thank you!

[@johnjeebu]

Really Great Explanation 👍 DNS Basics are so important if you are working with Infoblox DDI/Citrix ADC... Please create more such DNS concepts 🙏

[@pvergadia]

Thanks Jeebu!

[@GoiJiaJian]

I'm amazed in your ability to write backwards!

[@pvergadia]

Lol, I am not writing backwards. It's image flip :)

[@Kashmiri.111]

@@pvergadia ykwhm 😆😆

[@aishwaryar1998]

@@pvergadia oh😅

[@karthickrajam7087]

We want more fundamentals?
Please do playlist
Why we need "X" ?
X may be Cloud
X may be Network
X may be Internet
X may be Interest on any topic
It is like basement of House 🏘️

[@pvergadia]

Great to hear that you would like to see more fundamentals! I am working on a playlist.

[@YuganNimsara]

thank you for the shared knowledge and you present the content very clearly and pretty manner. Love it. keep it up.

[@Dutt936]

Best Explanation till date i have ever seen ,kudos Mam

[@FARZEEN171]

Why don't we directly go to authoritative server .... When we know that the information is not available at the first two place

[@Clipingdotclips]

Very first this process is too quick .
And second every server on internet reads the Top level domain(.dev)then second level domain (the cloud girl)and in last sub domain .

[@kaj-nagibe]

Quickly explained and straight to the point thanks, cloud girl.

[@brazeagle]

Very good video, really appreciated it. I would like to understand DDNS, I do have one, have not used for a long time, do not even remember why I got a DDNS with a service provider. Thank you again.

[@ashishkamble8833]

This is awesome!! The explanation technique is great, similar to IBM Cloud I would say. The content is also great. Similar topics would be surely helpful.! Thanks!

[@pvergadia]

Glad you are liking the content!

[@tonyantony5676]

Thank you. It helped me a lot 😃

[@beksaylor]

Thanks, Girl... great video.

[@zdavzdav86]

Best explanation I have seen yet! Bravo!

[@msk1828]

Nice explanation and I started learning cloud computing. I need some help any help you might offer madam.

[@Beatsonlite]

i just love her dimples

[@NidheesSingh-ik8kd]

Explained well in short and concise.

[@ramyakd]

Please make more fundamental videos.

[@karthickrajam7087]

Really Phone Number contact list comparing
You can post it TH-cam Shorts ❤️❤️❤️

[@MampsUK]

Very good explanation u made it very clear to understand

[@pvergadia]

Thank you!!

[@aryamainali9258]

All thanks to you now, I have a clear concept.

[@pvergadia]

Excellent!

[@brianstorm597]

Loved it, thank you for the clear explanation!

[@qbnronin]

This is still the best explanation of DNS! Thank you so much for making it so clear.

[@brezagay6622]

I have a question that comes to mind
We assume that we have 5 records, all of them with the same domain name, and each record has a different IP
Why when requesting query
The Name Serverin Response brings me all five records, not one or two
Is this constant in dns?
Or there something that can control this? I mean two records only go not the five

[@diginaveen]

Subscribed

[@victorejiofor8115]

I love the simplicity and the step-by-step explanations. Thanks for the video and for helping me understand better.

[@Dex_Dev01]

So if I were to change it on my Xbox, that wouldn’t do anything bad to my internet right? Cuz I keep getting told it will

[@CGS-Studio]

Best Explanation - No 1

[@pvergadia]

Thank you so much!!

[@erikornelas7]

Congrats the video is really usefull. Grettings from México

[@karuppasamypandian5226]

Thank you

[@The1234567890ashish]

This was really helpful. We love your style of explaining stuff. Please do make more such videos about fundamental concepts!

[@pvergadia]

Thank you so much! More videos planned for December

[@amberlisemasondede2834]

Young Anthony Gonzalez Jason Walker Anthony

[@thegeekb0y]

This tutorial made it so easy to understand the complex stuff. Thanks!

[@subinchaliyath6301]

Great explanation, waiting for next one. Thanks!

[@pvergadia]

Thanks!

[@preciousrichard8059]

Thanks

[@mikeletson1962]

Quick Question: Your diagram shows two-way communication between the resolver and each successive lookup server.
I thought that each successive lookup server goes immediately to the next server in line until the record is found and only then returns an answer to the resolver.
Can you please clarify this for me?
Best

[@pvergadia]

Yes, your understanding is accurate. The reason I show two way arrows is that it wont go to the next lookup if it find the answer, in which case it will go back to the user without recursion from any of those intermediate steps. Hope this helps.

[@keithgreenwade2398]

Well said! Have you more videos? I'll subsribe :)

[@bonurakhit3779]

Your explanation is amazing ❤

[@engietawfik789]

Thank you Priyanka, can we get a video on different DNS record types and how to use each?

[@pvergadia]

Thanks for the feedback. I will work on it.

[@sfq_xzx]

Really nice content buddy

[@dhavaldawarrior29]

Very Informative. Thank you Ma'am.

[@AquaGutterCleaning]

my DNS got crossed can anyone help

[@dayapatel5320]

Awesome & simple way to make understand !!! I loved it..

[@pvergadia]

Thanks Daya!

[@LifeInspiredNetwork]

Thank you! To the point and not complicated for use in class.

[@anup_narvekar]

If one directly enteres the host's IP address, followed by the resource path (e.g.: 123.459.77.93/about), will the request still undergo DNS resolution process?

[@loranxu4538]

I will have to say you probably have one of the best, if not the best, explanations of the steps between the resolver, root server, TLD, and Authoritative Name Server. I've watched many DNS videos, they failed to elaborate the specific function of root server, TLD, and Authoritative Name Server. It was hard for me to understand why they are redirecting the domain name around. But this is a nice and clear explanation. Thank you.

[@JB-ob8qu]

Easy explanation, thank you.

[@owolabikehinde41]

This is head up for me to start properly

[@Christina-ql2mh]

This explanation was very easy to understand- thank you!

[@pvergadia]

Glad it was helpful!

[@michaelbowen4275]

Very well explained! Thank you

[@deepakcb423]

Priyanka,
Can you let me know which "digital board" you have used here ?
This is really great.

[@pvergadia]

I am using a physical glass board, it’s not digital

[@deepakcb423]

@@pvergadia Thanks, Do you mind providing the brand name or link of the physical glass board which you use? This is simply awesome.

[@besalmon3517]

Simply brilliant... you are doing a fantastic job .... You are a 🌟

[@pvergadia]

Thank you!

[@MartinVlog444]

great video !

[@rdsamleti10]

You teach so awesome man liked it

[@DruDilly]

SUPER HELPFUL!!

[@robp4074]

I really like this video the comparison, and the use of the transparent drawing board is ingenious. However I have a question;
does the DNS resolver return the IP address directly back to your home router? or does the IP back to your ISP and then to your router?
I had it in my head that all of your internet traffic went PC > Router > ISP > Internet > ISP > Router > PC
If anyone has a good link as to how the traffic is sent & received plz share, Thanks

[@pvergadia]

Yes, it does if it has the IP address otherwise it sends the request further and then replies back

[@robp4074]

@@pvergadia thanks for replying, was the yes, yes it send the ip straight back to your home ip, bypassing your ISP?

[@navinmp2373]

👍

[@vigneshc1963]

Not accurate

[@gromstoso]

The best video around ..

[@charles-y2z6c]

Actually before smartphones I was able to remember all my friends phone numbers, but it was still a good explanation

[@ffblegend]

Yes more please

[@reneshmlal2809]

Thank You ❤

[@hariharanr1826]

can u please prepare one on basic cyber security practice ? - Thank you

[@pvergadia]

Thanks for the request, I will!

[@ppnehe]

Is this recursive lookup or iterative lookup ? DNS uses TCP or UDP port 53 or both ? Excellent and to the point video especially single one page diagram which gives 10,000/- feet birds view ...

[@kabilanrajkumar-xb1to]

Great example

[@lekem9617]

Great explanation

[@sriramakrishnavaranasi]

So cool explination

[@CruiseControlOne]

Love her concise explanation. Also love her "James Brown" hair-do, too!

[@rawabih4026]

we want more

[@Velo1010]

Perfect video!!!

[@Certitude365]

Thank you.
Where is DNS resolver located?
And also the rest of other servers?

[@Sonic-Pristine]

Thanks Didi, it's super helpful... Appreciated

[@jopadjr]

370th...Thanks

[@Ms032092]

Thank you for this clear walk through, it made the reading I have been doing make much better sense.

[@vegesnapriyanka9219]

This is awesome!!

[@naziakhatoon8388]

Thank you

[@davegcomedy1267]

excellent

[@dariusoliver4737]

This explanation helped me understand DNS so much better. Thank you for this!

[@houssam5008]

thank you for this informations, this was really helpful.

[@ankitmishra-zw9vc]

Thank you for explaining this, the level of clarity 😊 is amazing.

[@BobbiBoyd-b7n]

Your videos and book helps so much. Thanks for all of them.

[@jatinofficial]

This is flawless:))

[@pvergadia]

Thanks! :)

[@varshasingh1299]

Very nicely explained

[@pvergadia]

Thank you!

[@AnfalNasser]

Thank you very much for the clarity of this information

[@chinmayeearavind3772]

love this explanation ,simply amazing....

[@aishwaryar1998]

Thank you sis. It is clear and precise.😊

[@akashakku5293]

thanks for your explanation it's so clear

[@MunshiWahid]

Great video and yes, I do want more content. Thanks

[@Soumik.Biswas]

Thanks for sharing.

[@pvergadia]

I will, thanks for the ask!

[@davidadams5964]

That was awesome. Great explanation and presentation!

[@karimullashaik3323]

Explain CICD pipeline ?

[@pvergadia]

Noted, thanks for the request.

[@ahmedmarliesjunaveeantocan3656]

awesome.. hope you will more content

[@Mr.Gold4]

you are a great teacher, thank you

[@amitabh_sinha]

very well explained

[@priyankavergadia1509]

Thank you!

[@DruDilly]

What happens if it can’t find the record?

[@pvergadia]

It goes to the next authoritative name server for the answer.

[@harshanandraykar7808]

I liked, how u made it so simple to grasp✨

[@Bomylovesbananas]

Your explanation is nice and simple. Thank you