单项选择题 An administrator is moving a volume group from one server to another. The disks will be physically moved between the two systems.  Which two operations are required on the volume group prior to the physical disk switch？（）

单项选择题 he system administrator is making system wide changes to a server， which will add to the PATH variable for the server environment.  Where is the PATH variable found for the system？（）

单项选择题 After mirroring rootvg， a system administrator wants to validate that the system will boot correctly. Which of the following tasks must be performed before changing the boot order？（）