Check Your Understanding
You can find the answers to these questions in the appendix, “Answers to ‘Check Your Understanding’ Questions.”
What is an accepted method for cleaning computer components?
Using ammonia to clean the LCD screen
Using glass cleaner on a soft cloth to clean the outside of the mouse
Using a lint-free cloth to remove dust inside the computer case
Using rubbing alcohol to clean component contacts
A technician accidentally spills a cleaning solution on the floor of the workshop. Where would the technician find instructions on how to properly clean up and dispose of the product?
The safety data sheet
The insurance policy of the company
The local hazardous materials team
The regulations provided by the local occupational health and safety administration
Which tool can be used to take resistance and voltage measurements?
Power supply tester
Which tool would be used to create a partition on a hard drive?
Which statement describes the term ESD?
It is a type of interference caused by electrical motors.
It is a device that supplies a constant level of electrical power to a computer.
It is a measurement of the current flowing though electrical devices.
It is the sudden discharge of static electricity that can adversely affect a component.
Which tool can protect computer components from the effects of ESD?
Antistatic wrist strap
Which type of fastener is loosened and tightened with a hex driver?
Cross head screw
What safety hazard might occur if a partially filled aerosol can is exposed to excessive heat?
Lethal voltage potential
Which tool would be used to scan Windows critical system files and replace any corrupted files?
What tool would be used to determine which network port attaches to a specific office jack?
Punch down tool
Which device can protect computer equipment from brownouts by providing a consistent quality of electrical power?
A technician should keep a personal _____________where all steps taken to repair a computer problem are noted including any configuration changes made.
What would make it easier for a technician to troubleshoot a problem that has been previously solved by another technician?
Online computer manual
Centralized closed trouble tickets
Personal troubleshooting journal
Online forum of manufacturer
Which two devices commonly affect wireless networks? (Choose two.)
External hard drives
Incandescent light bulbs
What are two safety hazards when dealing with laser printers? (Choose two.)
Proprietary power bricks
Unwieldy card cages
What three guidelines should be followed to provide safe conditions when computer equipment is being repaired? (Choose three.)
Do not open the power supply.
Turn off the power to the printer and computer before beginning.
If a screwdriver is unavailable, use a knife with a sharp point to loosen screws.
Do not wear loose jewelry unless it is gold, because gold does not conduct electricity.
Ensure that your ID badge is around your neck and visible.
Have all of your extra parts, screws, meters, and tools beside the chassis ready for use.
Bend your knees when lifting heavy objects.
What is a proper directive for using a can of compressed air to clean a PC?
Spray the CPU cooling fan with the compressed air to verify that the fan blade is spinning freely.
Use a long, steady stream of air from the can.
Do not use compressed air to clean a CPU fan.
Do not spray the compressed air with the can upside down.