Which of the following are types of files downloaded during an Automatic Update？ （）

单项选择题AuserwhoisrunningWindowsXPProfessionalreportsthatthecomputermonitorstoppedfunctioningfollowinganinstallationofanupdateddriverforthevideocardandthatattemptstodeleteandre-installtheoriginaldriverhavenotcorrectedthesituation.WhichofthefollowingactionswouldbeBESTtocorrectthissituation？（）

A.Reset the system BIOS.
B.Use System Restore.
C.Change the color profile.
D.Replace the video card.

单项选择题Atechnicianissearchingaknowledgebaseforthecorrectmethodofremovingavirus.Theknowledgebasestatesthatthekey：HKEY_LOCAL_MACHINE MICROSOFT SOFTWARE CURRENTVERSION PAKneedstobedeleted.Whichofthefollowingshouldthetechnicianusetodeletethekey？（）

A.MSCONFIG
B.DEBUG
C.EVENTVIEWER
D.REGEDIT

单项选择题Whichofthefollowingcommandsallowsnavigationofthepathsbetweendirectories？（）

A.RD
B.DIR
C.MD
D.CD

单项选择题Whichofthefollowingutilitiesareusedtochoosewhichprogramsrunatstartup？（）

A.SFC
B.SETDEBUG
C.MSCONFIG
D.REGEDIT