When establishing the trust from PartnerCorp.xyz to CorpNet.local, what type of trust must be selected?

In a scenario where you need to establish a trust from PartnerCorp.xyz to CorpNet.local, selecting a forest trust is appropriate when dealing with multiple domains across different forests. A forest trust allows two Active Directory forests to trust each other, facilitating user access and resource sharing across the entire forest and all its domains.

In this case, the trust would enable users from PartnerCorp.xyz to access resources in CorpNet.local, and vice versa, without needing to set up individual trusts for each domain. This broad level of trust is ideal when the two forests are under separate administration but require resources to be accessible across both environments.

A forest trust is beneficial particularly in organizations that collaborate closely and need streamlined access, as it simplifies the administration of multiple domains and avoids the complexity associated with setting up numerous individual domain trusts. By choosing a forest trust, you establish a comprehensive framework that not only supports existing user needs but also scales well if more domains are added to either forest in the future.