21. ESD damage can be caused by:
A. Placing an IC in a non-conductive plastic bag
B. Placing an IC on a grounded mat
C. Repeated sags in current supplied from outlets
D. Touching metal on the chassis
E. None of the above
22. How can you totally protect a PC from damage during an electrical storm?
A. Disconnect the AC power cable
B. Disconnect all external cables and power cords
C. Use a surge protector
D. Turn off the AC power
E. None of the above
23. When you boot a PC and don’t hear any beep, this could suggest which of the following?
A. The monitor is turned off
B. Keyboard not plugged in
C. Normal PC boot
D. Bad or disconnected speaker
E. None of the above
24. What is the file extension used by WIN95 to back up registry file when windows start?
A. .dat
B. .dao
C. .bak
D. .tmp
E. None of the above
25. A 2xx POST error code indicates a problem with:
A. RAM or ROM
B. hard drive
C. system board
D. second adapter card
E. CMOS battery
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