单项选择题
A.The sky is red.
B.The sky is blue.
C.The sky is green.
D.The sky is yellow.
单项选择题 A user is complaining that they ran out of paging space. Which of the following will address this and provide best performance（）
单项选择题 Whichofthefollowingdiskprotectionmethodswouldbeusedtoprovidethemaximumamountofdataavailability（）
单项选择题 Whichofthefollowingcommandswouldasystemadministratorruntovalidate/etc/tunables/nextbootaftermanuallyediting（）