DNS settings and records in God's bible Domain [deploy Windows Server 2008 Series for Enterprise] 13]

DNS settings and their resource records in a domain environment are important, and the connection between the client and the server (reading and writing of Active Directory data) is implemented by DNS.

So, this time we'll figure out how DNS is set up in the domain and how the client locates the DC.

DNS settings: General DNS on the DC is pointing to itself because the DNS service is typically installed on a DC.

The client DNS is pointing to the DC.

The above DNS setup structure allows DNS to function properly in the domain (not excluding two of the cases where DNS is not installed on DCs).

Below we focus on the analysis of the resource records in DNS,

You can see "_tcp" in the image above and you can see two "_ldap" SRV records on the right, indicating that there are two DCs in my current site, one is core.wgs.com and one is ts.wgs.com.

So these two records is to rely on the client you want to join the domain, or to find core.wgs.com, or to find ts.wgs.com, so the client based on the image shown in the A record to locate the core and TS two hosts.