A datacenter manager would like to ensure that all fire suppression in the datacenter is safe for the equipment in the room. Which of the following classifications should be listed on the fire suppression system？（）

Anadministratorhasencounteredanerrorwhilepatchingavirtu...

单项选择题An administrator has encountered an error while patching a virtualized guest machine. Which of the following technologies would allow the administrator to restore to a pre-patched state the FASTEST？（）

Anadministratorhasexperiencedminorelectricalshockswhent...

单项选择题An administrator has experienced minor electrical shocks when touching metal surfaces in the data center. Which of the following is the MOST likely cause？（）

Whichofthefollowingusesaswitchingfabrictoconnectstorage...

单项选择题Which of the following uses a switching fabric to connect storage LUNs to hosts？（）