What run level is used for multi-user mode with a graphical user interface?

The run level associated with multi-user mode that includes a graphical user interface is designated as 5. In this run level, multiple users can log in to the system simultaneously, and the graphical user interface, often with a display manager, is initiated. This allows for a more interactive experience for users who work with graphical applications.

Run levels in Linux define the state of the machine in terms of what services and interfaces are available. Specifically, run level 5 is commonly utilized in systems that operate with a full graphical desktop environment. In contrast, other run levels either do not include a graphical interface or are set up for different system purposes, such as single-user mode or multi-user mode without a graphical environment.

Understanding this context is crucial for effective system administration and troubleshooting in Linux environments, as different run levels allow administrators to control system behavior efficiently and respond to specific user needs.