多项选择题
Which of these are symptoms of malware on a computer? （）(Select TWO).
A. Hard drive and network activity is higher when the computer is idle
B. CD-ROM ejects unexpectedly from the computer
C. Web browser accesses unexpected websites
D. Prints from the computer have random characters and symbols instead of text
E. The monitor has a permanent image burned into the display
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Malware has been detected and removed on a customer computer several times in a short periodof time. Which of the following will BEST help prevent future occurrences?（）
A. Defragment the hard drive
B. Discuss safe web-browsing habits with the customer
C. Delete temporary files, cookies and browser history
D. Install anti-virus software which uses manual updates -
单项选择题
Which of the following is the default location for the User profiles folder in Windows 7?（）
A. C:\Users
B. C:\Program Files (x86)
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D. C:\Windows\system32 -
单项选择题
Which of the following should the technician do FIRST when replacing a motherboard?（）
A. Use a benchmarking tool
B. Use anti-static wrist band
C. Remove the CPU
D. Remove the power supply
