PC Maintenance

Question 1

What does a beating from the UPS mean?

Answer 1

The computer is running on UPS battery power

Question 2

You have ordered a new laptop from an online retailer. When you come home one day after work, you’ll find the laptop it shipping container on your front doorstep. It is very cold outside, and you don’t know how long is the net. You impact the computer and would like to know if it is working properly. What you do

Answer 2

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

Question 3

You’re trying to help a coworker order a UPS for each PC in her remote office location. What rating is used to specify the size of the UPS?

– Watts
– Volt/OHM
– VA
– Volts

Answer 3

VA

Question 4

What is the best way to protect the computer from power spikes during electrical storm

Answer 4

Unplug the computer from the AC outlet

Question 5

Which of the following devices helps protects against temporary, above normal voltages?

Answer 5

Surge protector

Question 6

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

– Damp rag
– Wire brush
– Natural bristle brush
– Compressed air
– Industrial degreaser

Answer 6

Natural bristle brush

Compressed air

Question 7

Which of the following cleaning compounds should you including your cleaning kit?

– Chlorinated mouse wipes
– Alcohol-based monitor wipes
– Complementary metal oxide keyboard wipes
– Ammonia based toner wipes

Answer 7

Alcohol-based monitor wipes

Question 8

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

– Use a high wattage power supply
– Remove a slot cover from the back of the computer
– Vacuum dust from the system regularly
– Install thermostat in the fan circuit
– Verify that cooling fans are not circulate air in the wrong directions

Answer 8

Vacuum dust from the system regularly

Verify that cooling fans are not circulating air in the wrong directions

Question 9

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

– 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
– You should clean the monitor while it is powered off and with the power plug removed to avoid getting a shock

Answer 9

– You should clean the monitor while it is powered off and with the power plug removed to avoid getting a shock

Question 10

Besides protecting a computer from undervoltage, a typical UPS also performs which other actions? (select two)

– Conditions the power signal
–Prevents ESD
–Protects from other voltages
– Prevents electric shock
– Protects network cabling from EMI

Answer 10

Conditions the power signal

Protects from older voltages

Question 11

Your organization uses an 802.11 g wireless network. Recently, other tenants installed the following equipment in your building:

– A wireless television distribution system running at 2.4 GHz
– A wireless phone system running at 5.8 GHz
– A wireless phone system running at 900 MHz
–An 802.11a wireless network running in the 5.725 - 5.850 GHz frequency range
–An 802.11n wireless network running in the 5.8 Ghz frequency range

Since the equipment was installed, your wireless network has been experiencing significant interference. Which system is to blame?

Answer 11

The wireless TV system

Question 12

Which device typically should not be plugged in to a protected outlet on the UPS unit?

– Secondary monitor
– Laser printer
– External hard disk drive
– Inkjet printer

Answer 12

Laser printer

Question 13

You are troubleshooting a client connectivity problem on the ethernet network. The client system has intermittent connectivity to network. Discovered that the unshielded twisted pair patch cable run 75 feet from the wall outlet, passes through the ceiling and over several fluorescent light fixtures before reaching the client system. Which of the following may be a cause of the connectivity problem?

– EMI interference
– Failed patch cable
– Attenuation 
– Crosstalk
– The UTP cable does not support transmission distance of 75 feet without signal regeneration

Answer 13

EMI interference

Question 14

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

– Washable filters
– Coarse grade bag
– A vacuum cleaner that blows as well as vacuums
– Nonstatic generating
– Static induction motor

Answer 14

– A vacuum cleaner that blows as well as vacuums

– Nonstatic generating