单项选择题 An administrator has received complaints from users that an application is not available while other applications run. This application resides on an NFS mounted filesystem. Which of the following commands should be run as a reasonable first step to handle this problem？（）

单项选择题 WhichactionchangesthedefaulteditorforALLusersonthesystemfromvitoedit？（）

单项选择题 An administrator is investigating why a non-prompted NIM rte install is failing after the successful netboot of the spot. A matching spot and lpp_source are correctly allocated to the NIM client in addition to a bosinst_data.  What is the most likely cause of the install failure？（）