How does the client know which DNS server to contact when going to the site?

Question

Domain Name System

Actually a subject. How does the client understand that it is necessary to contact this DNS server? Where does he get this information from?

Answer 1

on the example of toster.ru:
there are root dns servers, their ip addresses are written in configs and very good. they rarely change, they give information about who is responsible for the ru zone, then we go to this server and ask who is responsible for toster.ru, go to it and get information about the records we need.
well, the information is stored in the local cache, so when you "ask" your provider's server to give you this information, it may not make requests to the outside world at all

Answer 2

So in the network connection settings of the computer it is indicated))