+Ring 0 is the most privileged [execution level](/wiki/Execution_Level) in a system's hierarchy. It is where the operating system [Kernel](/wiki/Kernel) operates, granted direct and unrestricted access to the computer's hardware. This ultimate authority ensures core system functions run securely.
+## See also
+- [Ring 3](/wiki/Ring_3)
+- [System Call](/wiki/System_Call)
+- [Privilege Level](/wiki/Privilege_Level)
... 1 more lines