Which command is used to restore a Junos device to its default state?

The load factory-default command is specifically designed to load the factory-default configuration, which contains the bare minimum settings required for the device to function, effectively resetting the device's configuration to its initial state.

While load override is a valid command for loading a configuration, 'factory-default' is not typically used as a direct override source in that format, and load factory-default is the specific command for this purpose.

There is no standard Junos OS command load replace default for restoring the factory default; load replace is used with a file or a configuration snippet.

There is no standard Junos OS command load set default for restoring the factory default; load set is used to load a configuration using 'set' commands.