单项选择题
A.Modify the portable computer’s power management settings to ensure the USB ports are not shut down when the computer is running on battery power.
B.Modify the portable computer’s BIOS settings to disable ACPI when the computer is running on battery power.
C.Modify the portable computer’s undocked hardware profile, and enable the USB root hub.
D.Disable the BIOS power management features in the portable computer’s BIOS settings.
E.Obtain external power supplies for the user’s USB devices. Ensure that these power supplies are connected when the portable computer is undocked.
F.Undock the portable computer, and reinstall the drivers for the USB port.
单项选择题 YouinstallanewUSBscanneronaWindows2000Professionalcomputer.Twoweekslater，theuserofthecomputerinformsyouthatwhenhescansimageswiththescanner，thecolorsdonotdisplaycorrectly.Whenheprintsthescannedimages，thecolorsprintcorrectly.Youneedtoensurethatthescannedimagesdisplaythecorrectcolors.Whatshouldyoudo？（）
单项选择题 Youinstall10USBtabletson10Windows2000Professionalcomputerswithbuilt-inUSBcontrollers.Afterinstallingthetabletsoftware，younoticethatthetabletscannotcommunicatewiththecomputers.Whatmustyoudotorecoverfromthisproblem？（）
多项选择题 YouattachaUSBcameratoyourWindows2000Professionalcomputer.Windows2000Professionaldetectsthecameraandpromptsyoutoinstallthemanufacturer’sdevicedriver.Youdoit，andthenyourestartthecomputer.WhenWin2000Professionalloads，younoticethatyourUSBkeyboarddoesnotrespond.YoususpectthatthecameradriversarenotcertifiedforWin2000Professional.Youwanttoconfigureyourcomputertoenableyourusekeyboardandtopreventuncertifieddriversfrombeinginstalledinthefuture.Whatshouldyoudo？（）