What is one of the key roles in a multi-domain environment for resource access?

In a multi-domain environment, the global catalog role plays a crucial function in resource access across different domains. The global catalog is a distributed data repository that contains a list of all the objects in an Active Directory environment, along with the necessary attributes for each object. It allows users and applications to quickly locate objects across multiple domains without the need for searching through each domain individually.

When a user authenticates to the network or searches for a particular resource, the global catalog provides a centralized point of information that enables seamless interaction between different domains. This role is especially important in environments where there are many domains and organizational units, as it streamlines access to objects and enhances performance by reducing the overhead of searching through multiple directories.

In contrast, the other roles mentioned serve different purposes. The infra­structure master role is responsible for updating references from objects in other domains, the Domain Admin role pertains to administrative privileges within a specific domain, and the Enterprise Admin role provides rights across the entire forest. While these roles are important for various administrative functions, they do not specifically facilitate cross-domain resource access in the same way the global catalog does.