單項選擇題

A Windows OS has failed to load after a successful power on self test. Which of the following steps will help troubleshoot the problem?（）

A. Change the time and date in the BIOS.
B. Replace the keyboard.
C. Check for media in the optical drive.
D. Add more RAM.

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多項選擇題

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

單項選擇題

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