A.reset the printer cableB.replace the toner cartridgeC……

单项选择题Auserreportsthatwhileprintingalargedocument，thelocalprinterfailstoprintandthedocumentcannotbedeletedfromthequeue.WhatistheMOSTlikelycauseoftheproblem？（）

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？（）

A.The 4X CD-ROM drive has dirty optics or laser and requires cleaning.
B.The 4X CD-ROM drive needs to be jumpered to support CD-RW disks.
C.The 4X CD-ROM drive does not support the multi-read specification.
D.The 4X CD-ROM is fine， but the CD-RW disk has a flaw in its format.

单项选择题Ausercomplainsthatacomputermonitorisexperiencingajitter.Replacingthemonitorandvideocarddoesnotfixtheproblem.Whichofthefollowingcouldbecausingtheproblem？（）

A.ESD（electrostatic discharge）
B.motherboard
C.RAMDAC
D.EMI（electromagnetic interference）

单项选择题AclientasksatechniciantoaddaDVD+Rburnertoacomputersystem.Thetechniciandoesthisandsuccessfullyteststhedrive.Threeweekslater，theclientcallsandsaysthattheburnerisnolongerworking.ThetechnicianlearnsthatthedrivereadsCDsandDVDs，butwillnolongerburnDVDs.Whenarrivingonsite，whatistheFIRSTactionthatthetechnicianshouldtake？（）

A.check for a faulty IDE cable
B.be sure that the DVD+R is formatted before using it
C.check for incompatible media
D.re-install the DVD burning software

单项选择题Whichcomponentsaredesignedtobeconvenientlyreplacedbyaservicetechnician？（）

A.SMDs（surface mounted devices）
B.FRUs（field replacement units）
C.FESs
D.BEMs