2.4 Practice Questions
-Conditions the power signals -Protects from over-voltages
Besides protecting a computer from under-voltages, a typical UPS also performs which other actions? (pick 2) -Prevents ESD -Protects network cabling from EMI -Conditions the power signals -Prevents electric shock -Protects from over-voltages
The computer is running on the UPS power
What does occasional beeping from the UPS mean?
-Laser printer
Which device type should typically not be plugged into a protected outlet on a UPS unit? -Laser printer -Secondary monitor -External hard disk drive -Inkjet printer
-Compressed air -Natural bristle brush
Which of the following are common tools used to physically clean the inside of a computer? (pick 2) -Wire brush -Compressed air -Industrial degreaser -Natural bristle brush -Damp rag
-Surge protector
Which of the following devices help protect against temporary, above-normal voltages? -Surge protector -Power strip -ESD grounding strap -Grounding wire
-A vacuum cleaner that blows as well as vacuums -Non-static generating
Which of the following features should you look for when selecting a vacuum cleaner for your cleaning kit? (pick 2) -Washable filters -Static induction motor -Coarse grade bag -A vacuum cleaner that blows as well as vacuums -Non-static generating
-Vacuum dust from the system regularly -Verify that cooling fans are not
Which of the following is most helpful in keeping a computer cool? (pick 2) -Use a high-wattage power supply -Vacuum dust from the system regularly -Verify that cooling fans are not circulating air in the wrong direction -Install a thermostat in the fan circuit -Remove a slot cover from the back the computer
You should clean the monitor while it is powered off with a lint-free cloth
Which of the following statements about cleaning monitors and display devices is true? -You should clean the monitor while it is powered off with a lint-free cloth -Most new monitors are self-cleaning and should not be cleaned using external methods -An LCD monitor is best cleaned using a lint rag and glass cleaner -Monitors are best cleaned while powered on so that you will be able to observe the effectiveness of your cleaning
-VA (volt-amp)
You are trying to help a co-worker order a UPS for each PC in her remote office location. Which rating is used to specify the size of a UPS? -Watts -Volt/ohm -VA -Volts
Let the computer warm up to room temperature before turning it on.
You take a new computer into your house after it's been sitting in the cold outside. You unpack the computer and would like to know if it is working properly. What should you do?