CompTIA Security+ Exam Prep

Answer: D - When a system crashes, it can respond by system reboot, emergency system restart, or system could start. A system root takes place after the system shuts itself down in a controlled manner in response to a kernel failure. An emergency system restart takes place after a system failure happens in an uncontrolled manner. This could be a kernel or media fail caused by lower-privileged user processes attempt to access memory segments that are restricted. A system could start takes place when an unexpected kernel or media failure happens and the regular recovery procedure cannot recover the system to a more consistent state.