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單項選擇題

A technician is troubleshooting a laptop LCD, and when the cover is opened nothing shows on the screen. Then all of a sudden the screen comes on and works fine. Which of the following should the technician check FIRST?（）

A.Backlight
B.Inverter
C.Loose cable
D.Lid switch

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單項選擇題

Which of the following commands would be used to verify the integrity of critical system files?（）

A.verify
B.nslookup
C.sfc
D.chkdsk

單項選擇題

Which of the following Microsoft encryption software provides the HIGHEST level of security for PCs running Windows Vista Enterprise or Ultimate Vista?（）

A. NTFS
B. Windows Defender for Vista
C. BitLocker drive encryption
D. EFS

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