What is the primary function of run level 2?

Run level 2 is primarily associated with a multi-user mode that allows multiple users to log in to the system simultaneously but does not include network services. This is particularly useful in environments where network connectivity is not required, and you want to limit system resource usage or increase security by not having the system connected to the network.

In run level 2, essential system processes are started, providing a functional environment for local users. It typically includes support for local filesystems and user logins but does not activate network services like DHCP or other networking daemons, which are enabled in higher run levels. Thus, it provides a balance between usability for local users and minimal exposure to network-related risks.

Understanding the characteristics of run levels is essential for managing system states effectively. This knowledge allows system administrators to choose the appropriate run level for various operational needs, whether for maintenance, troubleshooting, or day-to-day user operations.