A delegation is a record in a parent zone that lists a name server that is authoritative for the zone in the next level of the hierarchy. These paths are created by means of delegation. Delegationįor a DNS server to answer queries about any name, it must have a direct or indirect path to every zone in the namespace. It is important to understand the core features of DNS, such as delegation, recursive name resolution, and Active Directory-integrated DNS zones, because they have a direct impact on your Active Directory logical structure design.įor more information about DNS and Active Directory Domain Services (AD DS), see DNS and AD DS. If the server cannot answer the query from its cache or zones, it queries other servers for the answer.For example, a server hosting the zone can answer queries for any name in. When a DNS server hosts a zone, it is authoritative for the names in that zone (that is, the DNS server can answer queries for any name in the zone). A zone is a portion of the DNS tree stored on a DNS server. If the answer is in a zone hosted by the DNS server, it answers the query from its zone.If the answer is in its cache, it answers the query from the cache.A DNS server answers queries in one of the following ways: Any DNS server can answer queries about any name within its namespace.
The namespace contains all of the information needed for any client to look up any name. Applies to: Windows Server 2022, Windows Server 2019, Windows Server 2016, Windows Server 2012 R2, Windows Server 2012ĭomain Name System (DNS) is a distributed database that represents a namespace.
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