WhichofthefollowingisthecommandthatinstallsRecoveryCons……

多项选择题Whichofthefollowingcircumstanceswouldautomaticallycreateasystemrestorepoint？（）

A.installation of an unsigned driver
B.a system crash
C.installation of an application that uses Windows Installer or installation of Shield Pro version 6.0 or later
D.installing an update by using the Windows Update or Automatic Updates
E.each time the system is rebooted

单项选择题Bydefault，whatisDriverSigningsettoinWindowsXP？（）

A.Ignore
B.Warn
C.Block
D.Not installed

单项选择题Inwhichsituation（s）willWindowsXPadvisethetechnicianinstallingadevicethatthedriverissignedornot？（）

A.in all cases
B.for some non PnP（non plug and play） device drivers and all PnP（plug and play） device drivers
C.for all non PnP（non plug and play） device drivers and most PnP（plug and play） device drivers
D.not for any non PnP（non plug and play）device drivers,only for all PnP（plug and play） device drivers

单项选择题HowistheDiskDefragmentationutilityinWindowsXPaccessed？（）

A.open a command prompt and type DEFRAG
B.at Startup， press the <F8> key and select Defrag Disk
C.right-click My Computer， Manage， Disk Defragmenter
D.right-click Drive icon， Tools， Defragment Now

多项选择题Windows98SEallowsupgradestowhichofthefollowingoperatingsystems？（）

A.Windows XP Home
B.Windows XP Professional
C.Windows 2000 Professional
D.Windows NT 4.0