Which categories represent valid default groups in a Windows Domain? Select three.

In a Windows Domain, default groups are predefined groups that exist to streamline administrative tasks and permissions.

The category "Users" represents a valid default group in a Windows Domain. This group typically contains all user accounts created in the domain. Members of this group have basic access to network resources and can log into domain-joined computers. By default, every user account in the domain is automatically added to this group, making it essential for managing permissions and access rights.

The other categories, such as "Builtin," "Special Identity," and "Domain Admins," also refer to important entities within Windows Domains, but they serve different purposes. "Builtin" refers to groups that are created when the domain is set up, which includes administrative groups. "Special Identity" refers to a set of built-in security principals used by the operating system to apply permissions based on role rather than membership. "Domain Admins" is a specific administrative group that has elevated permissions for managing the domain, but it is not classified as a default group that encompasses all user accounts.

Thus, identifying "Users" as a valid default group is crucial, as it captures the core functionality of user management within a Windows Domain.