单项选择题

Which of the following technologies is the MOST secure form of wireless encryption?（）

A.SSL
B.WPA
C.WEP
D.TLS

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单项选择题

A technician arrives in Germany and discovers that when their PC is plugged into the outlet, nopower is received. Which of the following actions should the technician take to get the PC tooperate?（）

A. Change the BIOS settings to the local time
B. Adjust the voltage selector switch
C. Attach a 220 volt power strip from the current region to the PC
D. Attach a 120 volt battery backup power supply to the PC

单项选择题

The contrast ratio for an LCD monitor is BEST defined as the ratio between:（）

A. display resolution and brightness.
B. power consumption and output intensity.
C. power savings of a comparable crt monitor and the lcd.
D. the darkest and lightest displayed output.

单项选择题

A user can no longer launch their word processing program. The program worked fine yesterday.Which of the following options could BEST be used to fix the word processing program?（）

A. Safe Mode
B. Automated System Recovery
C. Last Known Good Configuration
D. System Restore

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