单项选择题

Which of the following access levels allows a user to perform normal day to day work with their own files but does not allow them to change system files or computer performance?（）

A. Administrator
B. User
C. Guest
D. Power user

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单项选择题

Malware is removed and a computer is rebooted. Later, the malware is found on the computeragain. Which of the following would permanently solve this problem?（）

A. Login using a different account
B. Install an Internet firewall
C. Install an email spam filter
D. Go back to a previous restore point

单项选择题

A floppy drive is replaced in a computer and now when the computer is turned on the floppy drive light is constantly lit. Which of the following is the MOST likely cause?（）

A. The power supply has failed.
B. The drive cable is connected backwards.
C. The floppy drive has failed.
D. The proper drivers have not been loaded.