2.5 PC Maintenance

A new laptop was delivered to your home and left on the porch while you were at work. It is very cold outside, and you don't know how long it has been there. You unpack the computer. You would like to know it it is working properly. Which of the following is the BEST action to take? A. Let the computer warm up to room temperature before turning it on. B. Blow compressed air into the cooling ports before turning it on. C. Turn on the computer and run self-diagnostic tests D. Place the laptop next to a heater set on high and warm it up. E. Visually inspect the LCD screen for cracks before turning it on.

A. Let the computer warm up to room temperature before turning it on.

Which of the following features should you look for when selecting a vacuum cleaner for your cleaning kit? (Select TWO). A. One that blows as well as vacuums B. Coarse grade bag C. Non-static generating D. Static induction motor E. Washable filters

A. One that blows as well as vacuums C. Non-static generating

Which of the following are common tools used to physically clean the inside of a computer? (Select TWO) A. Industrial degreaser B. Compressed air C. Natural bristle brush D. Damp rag E. Wire brush

B. Compressed air C. Natural bristle brush

Besides protecting a computer from under-voltages, a typical UPS also performs which other actions? (Select TWO) A. Protects network cabling from EMI B. Conditions the power signal C. Prevents electric shock D. Protects from over-voltages E. Prevents ESD

B. Conditions the power signal D. Protects from over-voltages

Which of the following device types should be plugged into a surge-protected-only outlet on a UPS unit, and not a battery backup outlet? A. Secondary LCD monitor B. Laser Printer C. External hard disk drive D. Inkjet printer

B. Laser Printer

Which of the following devices help protect equipment from temporary, above-normal voltages? A. Power strip B. Surge protector C. Grounding wire D. ESD grounding strap

B. Surge protector

You are trying to help a co-worker order a UPS for each PC in her remote office location. What rating is used to specify the size of a UPS? A. Volt/ohm B. VA C. Watts D. Volts

B. VA

Which of the following is most helpful in keeping a computer cool? (Select TWO). A. Use a high-wattage power supply B. Verify that cooling fans are not circulating air in the wrong direction C. Vacuum dust from the system regularly D. Install a thermostat in the fan circuit. E. Remove a slot cover from the back of the computer.

B. Verify that cooling fans are not circulating air in the wrong direction C. Vacuum dust from the system regularly

Your company provides testing services that help customers identify and resolve performance issues with their software and e-commerce sites before they go live. To perform accurate testing, a large number of computers are required, sometimes numbering in the hundreds. Recently, you have noticed that the lights in the testing lab seem dimmer than normal and sometimes flicker. Which of the following electrical terms BEST describes the condition you are most likely experiencing? A. Power spike B. Power surge C. Brownout D. Blackout

C. Brownout

Which of the following statements about cleaning monitors and display devices is true? A. Monitors are best cleaned while powered on in order to observe the effectiveness of your cleaning. B. Most new monitors are self-cleaning and should not be cleaned using external methods. C. An LCD monitor is best cleaned using a lint rag and glass cleaner D. A monitor should be powered off and cleaned with a lint-free cloth.

D. A monitor should be powered off and cleaned with a lint-free cloth.

Your company resides in an area with rapid growth in both the corporate and residential area surrounding your office. As such, your company has been experiencing several brownouts due to power grid problems (too much demand and not enough electrically). Fearing that your computers (especially the servers) could be damaged by these brownouts, your manager has asked you to find a solution to this problem. Which of the following would be the BEST device to recommend to your manager for computer protection? A. Power strips B. GFCI C. Surge suppressor D. UPS

D. UPS

What does occasional beeping from the UPS mean? A. The power reserve in the UPS battery is critically low B. The UPS battery is no longer able to hold a charge C. The computer is about to shut down D. The UPS is not connected to the computer E. The computer is running on the UPS battery power

E. The computer is running on the UPS battery power