An operator must check the status of print queues on a regular basis. Which of the following commands can be used to check on all the print queues?（）

单项选择题Which of the following commands will show how many physical partitions are available on active hdisk1?（）

A. lspv hdisk1
B. lsvg -p hdisk1
C. lsattr -p hdisk1
D. lsdev -E -l hdisk1

单项选择题What command will an operator use to check if the system has NFS3 filesystems currently defined?（）

A. lsnfs3
B. lsnfs -v 3
C. lsfs -v nfs3
D. lsfs -t nfs3

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.