单项选择题
Which of the following would be the maximum number of devices in a single chain that USB technology will allow？（）
A.98
B.127
C.254
D.120
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A.batteries
B.power cords
C.disk drives
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单项选择题
Duringbootup，alaptopscreendisplaysverticalcoloredlinesandthentheLCDscreengoesblank.Therearenodisplayproblemswhenconnectedtoanexternalmonitor.Whichofthefollowingactionsshouldbetakentoresolvetheproblem？（）
A.Replace the laptop.
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单项选择题
Whenconnectingalaserprintertoanetworkforthefirsttime，atechnicianshouldFIRST：（）
A.configure the network settings on the printer.
B.ensure the cable is set to TCP/IP.
C.enable the printer in the BIOS.
D.configure the printer as bi-directional in Windows.
