dnssec

 1- dnsclient send recursize query  request domain www.DLB.net

2- dns caching server send query ke root

3- dns caching tanya net zone

4- dns caching server tanya DLB zone

5- dns caching server hantar jawapan ke client.

ref:
https://www.youtube.com/watch?v=_8M_vuFcdZU

https://www.first.org/resources/papers/auckland2016/aucklandtc-20160221-edward_lewis-dns_root_zone_dnssec_operations.pdf