What a directory server does is to provide a lookup service for an organization. A directory service enables users to look up information about an organization. Lookup means to look anything up in an online directory.
It is an exclusive directory service created by Microsoft® to control user and machine authentication and authorization on a Windows domain network.
The major part of Active Directory is Active Directory Domain Services (AD DS), which assigns and enforces security policies and verifies access when a user login into a system or attempts to connect to one over the network.
Follow the link below to understand more on directory server
https://brainly.com/question/13818892
#SPJ4