Which of the following best describes a collection of one or more domains sharing a namespace?

• A. Domain
• B. Tree
• C. Forest
• D. OU

Answer: (C)

In Active Directory, a tree is a set of domains that share a common DNS namespace and form a contiguous, hierarchical name space. That means all domains in the tree are part of the same overall domain name structure, like root domain example.com and a child domain sales.example.com. A forest, while it can include multiple trees, does not require a single shared namespace—the trees can have separate namespaces but still rely on a common schema and global catalog across the forest. So the description of “one or more domains sharing a namespace” points to a tree. Domains on their own are single domains, and organizational units live inside a domain rather than spanning multiple domains.