单项选择题 AnSSAdiskthatispartofthemirroredvolumegroupneedstobereplaced.Whichofthefollowingproceduresshouldbeperformedbeforethediskisphysicallyabletobereplaced?（）

单项选择题 Whichofthefollowingcommandsshouldbeusedtoclearallentriesfromtheerrorlog?（）

单项选择题 While a user is compiling a C program, "vmstat 120 10" is run to determine the cause of a performance problem.  Using the vmstat output as shown in the exhibit, which of the following conclusions is most appropriate to draw?（）