单项选择题
A.Update the scanner drivers using certified drivers
B.Enable the USB port in the computers BIOS
C.Enable the USB hub controller in device manager.
D.Reinstall the USB device driver and disable the USB error detection
单项选择题 YouhaveacomputerwithaUSBkeyboardthatisrunningWindows2000Professional.YouinstallaUSBscanneronthissystem.Thesystemasksforthedriverandyouinstallthem.Afteryourestartyourcomputer，younoticethatthekeyboarddoesn’tworkanymore.Whatshouldyoudoinordertomakeboth，thekeyboardandthescannerwork？（）
单项选择题 Youarethenetworkadministratorforyourcompany.AuserreportsthattheUSBportsonhisWindows2000Professionalportablecomputerfunctiononlywhentheportablecomputerisinitsdockedpositionattheoffice.HeasksyoutoconfigurethecomputersothattheUSBportworkswhentheportablecomputerisdockedandwhenitisundockedandrunningonbatterypower.YouverifythattheportablecomputersupportsACPIpowermanagement.Whatshouldyoudo？（）
单项选择题 YouinstallanewUSBscanneronaWindows2000Professionalcomputer.Twoweekslater，theuserofthecomputerinformsyouthatwhenhescansimageswiththescanner，thecolorsdonotdisplaycorrectly.Whenheprintsthescannedimages，thecolorsprintcorrectly.Youneedtoensurethatthescannedimagesdisplaythecorrectcolors.Whatshouldyoudo？（）