单项选择题
A. Redundant power supplies with one power supply connected and one power supply as a hot spare.
B. Redundant power supplies with each connected to a separate power circuit.
C. Redundant power supplies connected via a Y-cable.
D. Redundant power supplies with each connected to the same power circuit.
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?（）
单项选择题 When making changes to a server, which of the following is the BEST way to troubleshoot a problem?（）