A  user  wants  to  be  permanently  added  to  the  dba  group.  Which  of  the  following  commands  or processes can be used to accomplish this（）

单项选择题Howcanpermissionsbesetupon tmpsothatoneuserinagroupcannotdeleteanotheruser’sfilesinthatsamegroup（）

A.chmod +s /tmp
B.chmod 755 /tmp
C.chmod 1777 /tmp
D.chmod 4755 /tmp

单项选择题WhichofthefollowingcommandcanbeusedtoidentifyallPCIhotplugslotsonaserverandtheircharacteristics（）

A.lsattr -l pci
B.lscfg -vl pci
C.lsdev -c slot
D.lsslot -c pci -a

单项选择题Whichofthefollowingcommandswilldisplaythecurrenttechnologylevelofaserver（）

A.instfix -r
B.oslevel -r
C.lslpp -L
D.oslevel -i grep ML

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（）

A.Run cfgmgr
B.odmdelete CuAt
C.exportvg rootvg
D.Deallocate LPs from failed disk

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（）

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