How DNS resolver is happening.

Hi everyone!
Here lets know how DNS resolver is happening.

Domain Name System(DNS)

**User**-Client -> DNS query Initiation -> sub resolver -> Resolver 

ISP ->Root Name Server[NS] -> TLD -> sub domain 

Sub Resolver

1. It is a locaal machine.
2. It has Internal DHCP, cache.
3. The data will be stored here for future use.
4. If the IP not found then move to Resolver ISP.

Resolver

1. It is the main resolver like Jio,Google, cloudflare etc.
2. If not have then, move to Root Name Server (.org , .com , .in)

TLD(Top Level Domain)

It Knows where the address of sub domain(www)
If not found here, then move to next.

Sub Domain

here it have the IP address for the requested website

So, this is how the DNS resolver is happening.