Microsoft's directory server product is ________.

• A. Active Directory
• B. Kerberos
• C. LDAP
• D. MS Directory

Answer: (A)

The main idea is naming Microsoft's directory service. Active Directory is the Microsoft directory service that provides centralized storage and management of users, groups, computers, and policies within Windows domains, enabling centralized authentication and authorization and domain-based administration. It serves as the actual directory server product in the Windows environment.

Kerberos is a network authentication protocol, not a directory server. LDAP is a protocol used to access and query directory services, not the product itself. MS Directory isn’t a real Microsoft product.