Where does DNS come from when the “Obtain DNS server address automatically” checkbox is checked in the router?

Question

network hardware

Good afternoon!
DIR-632. In the router settings, you can set the DNS server settings only if the connection type is "PPPoE + dynamic IP". There you can check the box "Obtain DNS server address automatically".
Where will these addresses come from?
If you put "Obtain DNS server address automatically" in the properties of the network adapter on your computer, then it will take DNS from the router, and where will the router itself take them from?

Answer 1

The computer is from the router, and the router is from the provider)