单项选择题 Which of the following is the BEST case scenario for power fault tolerance within a server?（）

单项选择题 An administrator setting up software RAID 1 on a Windows Server with two volumes for two separate hard drives, but the option for mirrored is grayed out. Which of the following is the likely reason why this is occurring?（）

单项选择题 Which of the following is a way to protect server operating systems from a short term contractor?（）