单项选择题
A. User2 needs write permission to the directory.
B. User2 needs both read and write permissions to the directory.
C. User2 needs both read and execute permissions to the directory.
D. User2 needs both write and execute permissions to the directory.
单项选择题 After making changes to the profile for an LPAR, the administrator asks the operator to bring the LPAR back up into a running state with the new changes. Which of the following is the correct way to do this?（）
单项选择题 Which of the following can be used to insert a new line below the current line inside a vi session?（）
单项选择题 An operator is asked to rewind and eject a tape from a system. Which command will accomplish this without touching the tape drive?（）