Primary and secondary dns configuration

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if have 4 dc's , integrated dns how know that one dc has primary zone and other has secondary zone. 

with active directory integrated dns, there no need primary dns zones , secondary dns zones.
primary , secondary dns zones can used control dns servers accept zone changes. dns server hosting primary dns zone accepts updates dns zone, dns server hosting secondary dns zone not accept updates dns zone. (effectively making read-only dns zone)

with active directory-integrated dns, every domain controller acting dns server allows updates active directory-integrated dns zone(s) hosts. changes written active directory , replicated other domain controllers in encrypted , compressed way, using active directory replication, based on timestamps.


Windows Server  >  Server Core



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