MSCA 70-291 Windows Server 2003 Exam Prep

Answer -D - The domain that is part of an existing tree structure with a forest root containing a contiguous namespace is called Child domain.

Key Takeaway: A child domain, also known as a sub domain, is a domain that is a part of a larger domain name in DNS hierarchy. The DNS hierarchy consists of the root-level domain at the top, underneath which are the top-level domains, followed by second-level domains and finally the sub domains.