Five Roles of Active directory?

Scalable — The Active Directory is highly scalable, which means it can function in small

networking environments or global corporations. The Active Directory supports multiple stores,

which are wide groupings of objects, and can hold more than one million objects per store.

Extensible — The Active Directory is "extensible," which means it can be customized to meet the

needs of an organization.

Secure — The Active Directory is integrated with Windows 2000 security, allowing

administrators to control access to objects.

Seamless — The Active Directory is seamlessly integrated with the local network and the

intranet/Internet.

Open Standards — The Active Directory is based on open communication standards, which allow

integration and communication with other directory services, such as Novell's NDS.

Backwards Compatible — Although Windows 2000 operating systems make the most use of the

Active Directory, the Active Directory is backwards compatible for earlier versions of Windows

operating systems. This feature allows implementation of the Active Directory to be taken one

step.