Active Directory stores data as objects. An object is a single complex type element, such as a user, group, application or device. Objects are normally defined as resources or some time devices such as printers or computers -- or security principals -- such as users or groups. Active Directory is a example of centralised database that keeps track of all the user accounts and their passwords in your organization. It allows you to store your user accounts and passwords in one protected and secure location, which in turn improves your organization's security.
Active Directory Interview Questions