Great explanation with ingenious visuals of showing the writing of the code and the instructor's facing the audience! Brilliant. I learn so much about DNS resolution from this video! ❤
I'm currently in school and this break down and visual was awesome!! I"m a visual learner so this helped me tremendously!!! THANK YOU! Will definitely be coming back to learn more!!
Great Explanation you have done whole Dns concept is clrare in one video and we can interpret in our own words thanks for thid amazing video. But i want to see her in mkre content which seems very less so please let her give more chance.
Very informative video, easily understood, just one question tho... if the Authority Domain Server has all the records of IP Adresses, why the need to use Root Servers and TLDs? Why not just skip ahead and directly ask Auth Name Server for the IP?
Hey Yuzo, because the DNS resolver doesn't have the IP address for the authoritative name server. To find the IP address of the auth name server it has to ask the root and then the TLD :)
Hey Aryan, it's cached on your operating system and browser, as well as the resolver - the time it stays cached on your device and browser depends on the TTL -Time To Live property set by the person who owns/ manages the domain 😊
Why can't dns resolver send request directly authoritative server instead of root server, tld ? Or directly ro tld instead of root server? How many authoritative servers available? If it's relatively less, dns revolvers can store ip addres of tld or authoritative server to directly get the ip address?
It's because DNS is a hierarchical structure where u have to go through the top level and then come down just like u can't contact a President directly u will have to go through hierarchy. It's in order to prevent all the load going on the Authoritative server directly and for managing purposes it is easier otherwise one admin has to look after all the things. DNS is there to delegate that authority
Hi I have a qs You said that after accessing the tld we will request the domain server to get it's up using it's DNS records But I think it's redundant because we have the domain first and we can use it to send the request to it to get the main IP address But I don't know why we are working like this ?
Great job but i am not sure if it's correct to say that we have 100s of root server. We have 13 root servers starting from A to M. While these servers may have replicas going on but as far as i know there are only 13 root servers.
when one gets a "host not found" error, what part of this diagram causes that error? Is it when the host that one is looking for does not exist in the Auth Name Server so no IP address is sent by Auth Name Server?
Why can't the DNS server bypass all that and go straight to the Authority name server since it has all the information? I would appreciate the explanation if you could please provide it.
How it directly send request once it get ip address? Lets say the user is in south India and access website running at north US. How will it communicate?
Hi there! The browser sends a HTTP request to the web server. This request is sent across using TCP/IP. The location of the web server and the user shouldn't matter for accessing the website until and unless it is a region restricted website in which case you might require VPN. If the server is located in a geographically distant location then there might latency issues but accessibility should be fine. Although this problem is tackled by using a distributed system where website owners can setup servers at various locations.
@@IBMTechnology thanks for your reply. But my question is, how the request is routed to the exact server. Lets say my request will go to my ISP and then from my ISP where the request go.. until it reaches the destination server. Im also aware of packets that will contain meta data. But how exactly its work? Can you pls make a video to understand better ❤
As a human, I actually use numbers to refer to the people in my network. My father is parent 1, and my mother is parent 2. I also number all my friends. I guess I'm the odd one 😁
Do I know what DNS is? Yes. Do I watch her watch the video anyway? Yes! What a great explanation and pleasant voice!
😄 Glad to hear that, thanks for watching!
yea me too, I liked her complexion xox :)
how lonely are you ☠️🐀
Absolutely you are a Dumpass
Very clear, great explanation and clear voice. Thank you Pooja.
Really nicely explained. Actually the best explanation I’ve seen so far. Thank you!
Awesome, thank you!
Great explanation with ingenious visuals of showing the writing of the code and the instructor's facing the audience! Brilliant. I learn so much about DNS resolution from this video! ❤
Being IBMer i feel this Video has clear information and complete Basic explanation
I'm currently in school and this break down and visual was awesome!! I"m a visual learner so this helped me tremendously!!! THANK YOU! Will definitely be coming back to learn more!!
Thank you 👍 This video helps a lot in understanding what a DNS is easier.
Such a clear and easy to understand explanation!! So proud of you Pooja❤️❤️
Smooth flow and easy to follow thanks Pooja from IBM
Perfect explained and also very interesting. Thanks you again IBM for your content here on RUclips! Amazing!!!
Very nice explanation Pooja! Thank youu!
Really proud of the women in CS! Excellent explanation 🥰
Khup Chan hota explanation, proud to see you at IBM, love from India❤
Excellent instruction , thank you Pooja !
Great explanation, you made it easier and very detailed!
You are so great! Best explanation!
this video was so helpful and clearly explained, thank you!!!
Clean and clear. Thank you.
Wow!! one of the best explanation of DNS I've ever seen
Nice, clear and concise explanation! Thank you.
So informative. Thanks for the video! Help us learn more!
Absolutely awesome breakdown
Very neat explanation Pooja 👏🏼👏🏼
Very good loved your explanation understood the whole DNS lookup thank yu.
You're an amazing teacher. Thank you!
Great video, was prepping for an interview and it helped a lot :)
Good job pooja! Well explained
nice work explaining a technical concept.
Thanks Pooja . Hope we get more videos of this kind
Great Explanation you have done whole Dns concept is clrare in one video and we can interpret in our own words thanks for thid amazing video. But i want to see her in mkre content which seems very less so please let her give more chance.
Thanks, Pooja! Nicely done!
Thanks Pooja for the explanation and thanks IBM for these videos!
You're welcome, Vivek, and thanks for watching! 🙂
Thank you Pooja, your explanation was very clear!👍😊
Love the presentation. Clear and precise
Awesome video! i understand what a dns is now!! Thank You
Awesome explanation, thank you!
BRILLIANT EXPLANATION
really great explanation!! thank you so much!
Excellent thank you so much
thank you so much for this perfect explanation mam
amazing, well explained 👍
Neat, clear and easy to understand..thank you
Great explanation!!
Very good explanation!
Very informative video, easily understood, just one question tho... if the Authority Domain Server has all the records of IP Adresses, why the need to use Root Servers and TLDs? Why not just skip ahead and directly ask Auth Name Server for the IP?
Hey Yuzo, because the DNS resolver doesn't have the IP address for the authoritative name server. To find the IP address of the auth name server it has to ask the root and then the TLD :)
ideally the root/tlds are closer, the higher up the less there r
Thanks a lot! Pooja..
Great indeed very helpful......love it💌💌
thankyou ibm and pooja
thank you...very well articulated.
Informational and clear. Thanks!!
thank you excellent explanation
Very helpful
Do you know how long does the ip address stay in the cache of the DNS resolver?
thankyou Thankyou a lot. but how's the writing done in opposite direction from your end?
Brilliant!
thank you very much ❤
Just a correction 4.30 - 13 Root Name Servers run by 12 organizations with 1553 instances Worldwide
Exactly.. wherein she said we have 100s of root servers which is not true
Perfect thank you pooja 👍
Awesome Pooja.
great job
perfect tutorial!
Im more impressed with the speed and ability of writing backwards
very well explained miss, is the ip address of the websites cached on our browser ( client side as well ) or only on the dns resolver ?
Hey Aryan, it's cached on your operating system and browser, as well as the resolver - the time it stays cached on your device and browser depends on the TTL -Time To Live property set by the person who owns/ manages the domain 😊
Why can't dns resolver send request directly authoritative server instead of root server, tld ? Or directly ro tld instead of root server? How many authoritative servers available? If it's relatively less, dns revolvers can store ip addres of tld or authoritative server to directly get the ip address?
It's because DNS is a hierarchical structure where u have to go through the top level and then come down just like u can't contact a President directly u will have to go through hierarchy. It's in order to prevent all the load going on the Authoritative server directly and for managing purposes it is easier otherwise one admin has to look after all the things. DNS is there to delegate that authority
Doesn’t it check in the host file too before going to cache memory to resolve the url?
I don’t understand why the DNS Resolver doesn’t checks the auth. Name server directly…?
Great video.
Thanks Pooja
How is she doing this, how did you guys recorded this, how can she write and draw everything mirrored. Great video so far btw.
See ibm.biz/write-backwards
Video of a pedagogy largely under side compared to the number of views, thank you!
nice explained
I loved the way you explained! Very good!
Hi
I have a qs
You said that after accessing the tld we will request the domain server to get it's up using it's DNS records
But I think it's redundant because we have the domain first and we can use it to send the request to it to get the main IP address
But I don't know why we are working like this ?
Good presentation, however, u didn't mention about the Host file which will be checked first before the cache
Can she make more videos??
Thanks :)
Great job but i am not sure if it's correct to say that we have 100s of root server. We have 13 root servers starting from A to M. While these servers may have replicas going on but as far as i know there are only 13 root servers.
when one gets a "host not found" error, what part of this diagram causes that error? Is it when the host that one is looking for does not exist in the Auth Name Server so no IP address is sent by Auth Name Server?
Thank you so much
Why can't the DNS server bypass all that and go straight to the Authority name server since it has all the information? I would appreciate the explanation if you could please provide it.
It will a lot hell time, If they store everything at only one place
That was a great explanation poojiii .... Proud of u babe ❤️😙❣️😙.... Keep going 🔥🔥🔥🔥
How it directly send request once it get ip address? Lets say the user is in south India and access website running at north US. How will it communicate?
Hi there! The browser sends a HTTP request to the web server. This request is sent across using TCP/IP. The location of the web server and the user shouldn't matter for accessing the website until and unless it is a region restricted website in which case you might require VPN. If the server is located in a geographically distant location then there might latency issues but accessibility should be fine. Although this problem is tackled by using a distributed system where website owners can setup servers at various locations.
@@IBMTechnology thanks for your reply. But my question is, how the request is routed to the exact server. Lets say my request will go to my ISP and then from my ISP where the request go.. until it reaches the destination server. Im also aware of packets that will contain meta data. But how exactly its work? Can you pls make a video to understand better ❤
Nice explanation please provide link of the website you mentioned in the last part of video
Hi there! All the links are provided in this video's description. 🙂
WHY DNS RESOLVER DIRECTLY GOES TO AUTH NAME SEVER
Out of all the public IP addresses available she had to choose an RFC 1918 or private IP address that in not routable over the Internet 😀
Do I have the wrong info? I knew there are only 13 root servers.
awesome
As a human, I actually use numbers to refer to the people in my network. My father is parent 1, and my mother is parent 2. I also number all my friends. I guess I'm the odd one 😁
contact a therapist ☠️
tamilan da.super pa
Is this lady writting everything backwards?????
Actually no. 😉 We shared some behind the scenes of our videos on the Community page, check it out here 👉ibm.co/3lIZaZV
i was like wtf!!!!!
Hernandez Eric Miller Sandra Allen Robert
👍🏽
just wonder how she wrote that reversely???
Because she has 3 brains🧠
Increase volume
How on earth is this video shot??
Thomas Mark Wilson Mary Taylor Michelle
I trust you because you are Indian.
Is she writing in reverse 😮
ummm is she writing backwards???
See ibm.biz/write-backwards
Look in cache memory first - realy.I'm disapointed. This channel for future professionals but not for funs. Į expected more details explanations.
Very correct
she should say local host file instead of memory.