DNS replication

Hi all,

Our DNS roles are on our DCs. It means the DNS zones are AD integrated zones. The zone data are stored in the AD and will be replicated with the AD replication. I have below several questions about restricting the replication to specific DNS servers.

1. If the DNS zone is the AD integrated zone, I'm not able to configure anything in the "Zone Transfers" tab to only allow zone transfers to specific DNS servers. This is only applicable for Standard Primary Zones and Standard Secondary Zones, right?
2. So how can I restrict the replication to specific DNS servers instead of all DCs in the "Change Zone Replication Scope" under "General" tab? I want the DNS zone data to be replicated ony between the local site DCs.
3. What are the differences between 2nd and 3rd item in the "Change Zone Replication Scope"?

Thanks,
高麻雀