单项选择题
All of the following statements accurately describe process for administering file systems EXCEPT:（）
A.A logical volume must exist prior to running the crfs command to create a file system
B.A file system must be unmounted before it can be removed
C.Defining a file system imposes a structure on a logical volume
D.Removing a file system using rmfs automatically removes the underling logical volume
单项选择题 A system administrator has added a new graphics card to the system and rebooted. The system pauses with C31 in the three-digit displays. Which of the following causes could be the reason for the hang?（）
单项选择题 Which of the following attributes should be specified when creating a volume group?（）
单项选择题 Which of the following statements is mot correct about mirroring?（）