What command will an operator use to check if the syste……

单项选择题An operator notices that a job on the system is causing poor performance. The job is a root process and the administrator has concluded it is not important and can be stopped. Shortly after stopping the process, it starts again. Which of the following commands will list repeating scheduled tasks?（）

A. at -l
B. jobs -l
C. sched -l
D. crontab -l

单项选择题Which command enables a user to exit the vi editor, overwriting the existing file without prompting for confirmation?（）

A. :w
B. :qw
C. :x!
D. :we!

单项选择题User2 is complaining that he is unable to list the contents of a directory. What is the most likely cause?（）

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?（）

A. Shutdown and activate the partition profile
B. Reboot the partition using the reboot command
C. Reboot the partition using the 'shutdown -r' command
D. Right click on the partition profile and select the 'apply changes' option

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?（）

A. o
B. a
C. p
D. A