What is the main function of a domain in network management?

The primary function of a domain in network management centers around managing user functions, which includes authentication and the assignment of resource privileges. A domain acts as a centralized management structure that allows for the organization of users and devices within a network. By using a domain, administrators can implement policies and permissions systematically, ensuring that users can only access resources they are authorized to use.

This centralized approach simplifies user management tasks, such as setting policies for password complexity and expiration, controlling logon rights, and enforcing security measures across all devices connected to the domain. Additionally, it allows for scalable management as more users and devices are added to the network, effectively streamlining administrative duties.

The other choices touch on important aspects of network management but do not capture the comprehensive function of a domain as effectively. Restricting user access, isolating network traffic, and enabling peer-to-peer sharing are all relevant actions within network management but are not the core purpose of a domain itself.