单项选择题 Which of the following sequence of command extracts the tenth image form a tape in tape device rmt1?（）

单项选择题 There is the possibility that hdisk1 in the root volume group is going bad. A decision has been made to replace the disk. After saving all of the data from the disk and unmounting any filesystems on the disk, which of the following commands should be run before removing the disk from the system?（）

单项选择题 Which of the following options will show all of the fixes installed on a system?（）