单项选择题
A.chmod +s /tmp
B.chmod 755 /tmp
C.chmod 1777 /tmp
D.chmod 4755 /tmp
单项选择题 WhichofthefollowingcommandcanbeusedtoidentifyallPCIhotplugslotsonaserverandtheircharacteristics（）
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（）