2.5 practice questions pc maintenance

Which of the following statements about cleaning monitors and display devices is true?

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

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?

Brownout

Besides protecting a computer from under-voltages, a typical UPS also performs which other actions? (Select TWO.)

Conditions the power signal 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?

Laser printer

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 if it is working properly. Which of the following is the BEST action to take?

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

Which of the following devices help protect equipment from temporary, above-normal voltages?

Surge protector

What does occasional beeping from the UPS mean?

The computer is running on the UPS battery power.

Your company resides in an area with rapid growth in both the corporate and residential areas surrounding your office. As such, your company has been experiencing several brownouts due to power grid problems (too much demand and not enough electricity). 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?

UPS

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?

VA

Which of the following is most helpful in keeping a computer cool? (Select TWO).

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

Which of the following are common tools used to physically clean the inside of a computer? (Select TWO.)

compressed air natural bristle brush

Which of the following features should you look for when selecting a vacuum cleaner for your cleaning kit? (Select TWO).

non-static generating one that blows as well as vacuums