单项选择题

A.The CD is defective.B.The CD is not bootable.C.The CD……

An A+ Certified Technician MUST do an install on a Windows XP system from the distribution CD. However， the system does not boot from this CD. What is the MOST likely cause of this problem？（）

A.The CD is defective.
B.The CD is not bootable.
C.The CD-ROM drive is defective.
D.The Boot Sequence is not set in the BIOS to boot first from the CD

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单项选择题WhichofthefollowingisNOTaphaseofthetroubleshootingprocess？（）

A.confirm the repair
B.define the problem
C.document the results
D.simplify the problem

单项选择题WhatistheFIRSTandmostimportantstepinsystemtroubleshooting？（）

A.back up the system data
B.gather information about the problem
C.try rebooting the system to see if that fixes the problem
D.check the System Error Log or Event Log

单项选择题AdefectiveCD-ROMdriveisreplacedwithanewCD-ROMdrive.ThenewCD-ROMdriveisabletoreadanyCDthatitaccesses，butmusicCDsdonotplaymusic.WhatistheMOSTlikelycauseofthisproblem？（）

A.The audio cable is not connected to the drive.
B.The ribbon cable is not connected.
C.The power cable is not connected.
D.The CD-ROM drivers are not installed.