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I am using VPN to connect to domain A from a workstation residing on domain B. When the VPN connection is established, the workstation can access the DNS records on domain A, but cannot access DNS records on its parent domain B.<br />
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How can I make the domain B DNS zone available? What do I need to configure at domain A DC?
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I am using VPN to connect to domain A from a workstation residing on domain B. When the VPN connection is established, the workstation can access the DNS records on domain A, but cannot access DNS records on its parent domain B.

How can I make the domain B DNS zone available? What do I need to configure at domain A DC?

DNS configuration between domains

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.

A virtual private network (VPN) is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or travelling users access to a central organizational network securely. VPNs encapsulate data transfers using secure cryptographic methods and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.