Hello 19delta4u,
I try to explain it to you as far as i understand.
We know that there are two zones becuase in the SOAP response there’s a 2.
A dns zone is a group o FQDN.
Yo can create a dns zone with a lot of dns names of the same level or only one. This zone is managed with only one dns nameserver, but, what if you have a domain with lot of trafic?
You can split it in a dedicated zone.
What if you need to add more utilites to this domain? Perhaps, you use another subdomain?
Think that dns names fall in a three.
I hope this helps you to solve this challenge.