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（）

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（）

A.path=$path：/usr/vac/bin； export path
B.path.=/usr/vac/bin； export $path
C.Modify the path environment variable in /etc/profile
D.Modify the path environment variable in /.profile

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An administrator attempts to add a new 100GB logical volume to the datavg volume group， which resides on hdisk1.  How can the administrator easily determine if there is enough space in datavg to create the logical volume（）

A.lslg datavg
B.lspv datavg
C.lsvg datavg
D.lslv hdisk1

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