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单项选择题An  administrator  performs  an  audit  on  the  /usr  filesystem  and  finds  the  following  permissions：  -rwsr-xr-x  1  root  sys  514288  Jun  18  09：40  /usr/local/bin/nmon  Which  of  the  following  methods  can  the  administrator use to remove a potential security risk（）

A、rm /usr/local/bin/nmon

B、chmod u-s /usr/local/bin/nmon

C、Reinstall the file from the appropriate fileset

D、chmod go-rx /usr/local/bin/nmon

  • B

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