Chapter 2.5

Which of the following are common tools used to physically clean the inside of a computer? (Select two.) Natural bristle brush Industrial Degreaser Damp Rag Wire Brush Compressed air

Natural Bristle Brush Compressed Air

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?

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

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?

Magnetic fields

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

RFI is caused by nearby devices, such as cordless phones or microwave ovens. RFI (radio frequency interference) is caused by nearby wireless devices using the same channel, cordless phones, or microwave ovens.

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

The printer's cleaning function

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

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

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

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

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

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

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

Which of the following features should you look for when selecting a vacuum cleaner for your cleaning kit? (Select two.) It's important to select a vacuum cleaner for use with computer equipment that won't generate harmful static. Electrostatic discharge should always be avoided around sensitive computer components, and one that blows as well as vacuums can be important as it may be better to remove dust and other foreign matter by applying a blowing force rather than vacuuming.

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

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