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Anadministratorhasreceivedcomplaintsfromusersthatanapplicationisnotavailablewhileotherappl
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Anadministratorhasreceivedcomplaintsfromusersthatanapplicationisnotavailablewhileotherapplicationsrun.ThisapplicationresidesonanNFSmountedfilesystem.Whichofthefollowingcommandsshouldberunasareasonablefirststeptohandlethisproblem（）
A.df
B.showmount
C.exportfs
D.refresh-gnfs
参考答案: