单项选择题 Whichofthefollowingcommandswilldisplaythecurrenttechnologylevelofaserver（）

单项选择题 A System p administrator needs to replace a failed internal disk in a mirrored rootvg.  Which of thefollowing is one of the steps that would need to be followed（）

单项选择题 An administrator needs to add the /usr/vac/bin directory to their PATH environment variable for the current session.  Which of the following will accomplish this task（）