单项选择题
A. Installing antivirus B. Reconfiguring the firewall C. Changing the permissions and passwords D. Educating the end user
A technician is trying to retrieve a screw that fell in...
单项选择题A technician is trying to retrieve a screw that fell inside a case and is just out of reach. Which of the following is the BEST procedure to retrieve the screw?（）
A. Turn the case upside down, shake gently and let the screw fall out. B. Use a shop vacuum to retrieve the screw. C. Use the hardware abstraction layer (HAL). D. Use an extension magnet.
A technician is troubleshooting a laptop LCD, and when ...
单项选择题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
Which of the following commands would be used to verify...
单项选择题Which of the following commands would be used to verify the integrity of critical system files?（）
A.verify B.nslookup C.sfc D.chkdsk
