Which server type is primarily used to manage user authentication and access to network resources?

• A. Directory server
• B. DNS server
• C. DHCP server
• D. Web server

Answer: (A)

Centralized identity and access management is what this item is about. A directory server stores user accounts, groups, and permissions and provides authentication (verifying who someone is) and authorization (what they’re allowed to do) for many network resources from a single place. It supports common protocols like LDAP and Kerberos, enabling consistent security policies, single sign-on, and centralized auditing across the network.

That makes it the best fit for managing user authentication and access to network resources because other server types serve different purposes: a DNS server translates domain names to IP addresses, a DHCP server assigns IP configuration automatically, and a web server delivers web content. They don’t centrally verify identities or enforce access rights across the network.