Domain Name System (DNS) Basics | Simply Explained, with an Example

When I first learned about the Domain Name System (DNS) and how it worked, I found it hard to wrap my head around. All those name servers and back-and-forth! If you’re in the same boat and feeling a little bit confused, hopefully this short video will help.

I first explain why we need DNS in the first place (to make your life easier!), and then walk through the different parts that make up a domain name (top level domain [TLD], second level domain [SLD], subdomain and the fully-qualified domain name [FQDN]). Then I walk through a step-by-step example of everything that happens behind the scenes when you navigate to a website.

00:00 – Why we need a Domain Name System (DNS)
01:20 – The anatomy of a domain name (TLD, SLD, subdomain and FQDN)
02:15 – A step-by-step example of how DNS works behind the scenes

[deepakall]

Really impressed with your teaching.
Reg Newer Analogy for DNS, it can be something like
Rather than remembering someone's home address, we can ask them to send their location via google maps

[Learner-hghj]

Thanks madam ! Pretty clear and concise !! Clearly understood
Just like To reach an address - > We go to World -> country -> state -> city -> street - address
root domain -> TLD server -> SLD server (godaddy) -> address (save address in DNS cache for future use)

[Arliss]

Excellent overview of this topic, really enjoy your presentation style!

[neviswarren]

Very well presented. The graphics are very helpful. It's much appreciated. Thank you.

[syedmustafaqamar]

great tut, keep it going, ma'am!

[melbha_varsha]

How to Build power applications which utilizes graphs available in canvas App

[John-eqcd]

Thank you for this and your other videos which are clear and well-presented. I have a couple of questions on this one.
Is it the case that the SLD name server will ask other SLD name servers for the amazon IP address if it doesn't have it?
Does the TLD name server receive the response from the SLD and so hold it in cache?