单项选择题 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?（）

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