2.5 ~ PC Maintenance

Which of the following are common tools used to physically clean the inside of a computer? (Select two.) a. Damp rag b. Wire brush c. Compressed air d. Natural bristle brush e. Industrial degreaser

c. Compressed air d. Natural bristle brush

What should you use to clean an inkjet printer's print heads? a. The printer's cleaning function b. Damp cloth c. Anti-static vacuum d. Denatured alcohol

a. The printer's cleaning function

Which of the following are 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. Install a thermostat in the fan circuit d. Vacuum dust from the system regularly e. Remove the slot cover from the back of the computer

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

Which of the following features should you look for when selecting a vacuum cleaner for your cleaning kit? (Select two.) a. Non-static generation b. Static induction motor c. Coarse grade bag d. Washable filters e. Blows as well as vacuums

a. Non-static generation e. Blows as well as vacuums

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 laptop. You would like to know if it is working properly. Which of the following is the BEST action to take? a. Turn on the laptop and run self-diagnostic tests b. Let the laptop warm up to room temperature before turning it on c. Visually inspect the LCD screen for cracks before turning the laptop on d. Place the laptop next to a heater set to high e. Blow compressed air into the cooling ports before turning the laptop on

b. Let the laptop warm up to room temperature before turning it on

Which of the following is true about negative pressure systems? a. They force air out through windows, doors, and other openings b. They can bring in airborne particles, such as dust or smoke c. They are more energy effective than positive pressure systems d. They filter out airborne particles

b. They can bring in airborne particles, such as dust or smoke

You are a system administrator for a financial institution. Most of your employees work at home and have various work environments. One of your account managers is complaining that customer data is disappearing from her account management application. She insists that she saves data regularly and has not had a problem until recently. Her workstation has both a solid-state drive (SSD) and a traditional hard drive. She runs the application from the SSD drive, but stores the customer data on the hard drive. She has recently moved her desk to a room in her house that is used for entertainment. The room has a sound system with several installed speakers for surround sound. Which of the following types of interference might be causing the issue with disappearing customer data? a. Negative pressure HVAC system b. Electromagnetic interference (EMI) c. Magnetic fields d. Radio frequency interference (RFI)

c. Magnetic fields

Which of the following is true about RFI? a. Unshielded twisted-pair cables and fiber optic cables can protect RFI signals. b. RFI is caused by motors, machinery, and fluorescent lights. c. RFI is caused by nearby devices, such as cordless phones or microwave ovens. d. You can reduce RFI by using a wireless networking standard that operates in the 2.4 GHz range.

c. RFI is caused by nearby devices, such as cordless phones or microwave ovens.

Which problem can occur if your system case fan blows in the wrong direction? a. A rapid change from cold to warm can cause damage to the components b. Condensation can build up in the computer c. The flow of air is negated and the system can overheat d. Extensive dust can build up and the system can overheat

c. The flow of air is negated and the system can overheat

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

c. You should power off your monitor and clean it with a lint-free cloth