单项选择题
A.The printer cable is not bi-directional.
B.The user does not have full printer administration rights.
C.The computer cannot spool and send the print job fast enough.
D.The print job is too big for the amount of available memory.
单项选择题 AcustomerreceivesaCD-RWdiskfromacomputervendor.Thecustomertriestoreadthediskinacomputerwitha4XCD-ROMdriveandisunabletoreadanyinformation.ThecustomertriestheCD-RWdiskona32XCD-ROMdriveanditreadscorrectly.Whatisthecauseofthisproblem？（）
单项选择题 Ausercomplainsthatacomputermonitorisexperiencingajitter.Replacingthemonitorandvideocarddoesnotfixtheproblem.Whichofthefollowingcouldbecausingtheproblem？（）
单项选择题 AclientasksatechniciantoaddaDVD+Rburnertoacomputersystem.Thetechniciandoesthisandsuccessfullyteststhedrive.Threeweekslater，theclientcallsandsaysthattheburnerisnolongerworking.ThetechnicianlearnsthatthedrivereadsCDsandDVDs，butwillnolongerburnDVDs.Whenarrivingonsite，whatistheFIRSTactionthatthetechnicianshouldtake？（）