A.Laser unitB.Developer unitC.Charge assemblyD.Fuser as……

单项选择题Acustomerhasinstalledanewcomputerontheirnetwork.Theycanprinttotheprinterbuttheoptionforduplexprintingisnotavailable.Allothercomputershavetheoption.Whichofthefollowingisthecauseoftheproblem？（）

A.The new computer is printing to the wrong IP address.
B.The new computer is using the wrong protocol.
C.The driver port is not setup correctly.
D.The option has not been selected on the driver.

单项选择题Whenisitadvisabletodumpthewastetonerfromatechniciansservicevacuum？（）

A.When it is full.
B.It is not recommended.
C.Before performing preventative maintenance.
D.After each call.

单项选择题HowmanyCCDsarelocatedinasinglepassduplexADF？（）

A.One
B.2
C.3
D.4

单项选择题Whichofthefollowingutilitiescouldbeusedtodetermineasubnetmask？（）

A.PING
B.NSLOOKUP
C.TRACERT
D.IPCONFIG

单项选择题WhichofthefollowingwouldbetheBESTprocessforthetechniciantofollowwhenbeginningtodiagnoseaunitatacustomerssite？（）

A.Check the printers error log， and then inform the primary user what the issue is.
B.Go directly to the printer and investigate any issues that are found.
C.Investigate the printers status， then ask the primary user to write down what they think is wrong.
D.Gather information from the primary user， and then evaluate the printers condition.