单项选择题
A.cleanup
B.commit
C.deinstall
D.reject
单项选择题 AsystemadministratorhasbeenaskedtoinstallanAPARbutwantstobeabletoeasilyremoveit.Whichinstalloptionshouldbeused？（）
单项选择题 SeveralpeopleinanInformationTechnology（IT）departmentareaskingforfilesetupdatesthatthesystemadministratorreceivedearlierthatdayonCD-ROM.Thesystemadministratorcreatedaninstalldirectoryontheirmachineandmadeitavailabletoeveryone.WhichofthefollowingcommandswillallowthesystemadministratortocopytheimagesfromtheCD-ROMtotheinstalldirectory？（）
单项选择题 Asystemadministratorhasjustinstalledanewmaintenancelevel，but"oslevel-r"doesnotshowthecorrectmaintenancelevel.Whatcommandcanbeusedtodeterminewhichfilesetsaredownlevel？（）