IT-Essentials v6.0 Chapter 2 Practice Quiz Answers
1. Which device can protect computer equipment from brownouts by providing a consistent quality of electrical power?
AC adapter
SPS
UPS*
surge suppressor
2. What is a proper directive for using a can of compressed air to clean a PC?
Use a long, steady stream of air from the can.
Do not use compressed air to clean a CPU fan.
Spray the CPU cooling fan with the compressed air to verify that the fan blade is spinning freely.
Do not spray the compressed air with the can upside down.*
3. What safety hazard might occur if a partially filled aerosol can is exposed to excessive heat?
Explosión*
lethal voltage potential
breathing hazard
lead poisoning
Explanation:
Any cans or bottles that contain solvents used in computer cleaning or repair should be handled with care and treated as hazardous waste.
4. Which tool can protect computer components from the effects of ESD?
antistatic wrist strap*
surge suppressor
UPS
SPS
Explanation:
An antistatic wrist strap equalizes the electrical charge between the technician and the equipment and protects the equipment from electrostatic discharge.
5. Which tool would be used to scan Windows critical system files and replace any corrupted files?
SFC*
Defrag
Chkdsk
Fdisk
Explanation:
The Windows System File Checker (SFC) can scan and automatically repair corrupted system files. Chkdsk is used to verify the integrity of the file system on a hard drive. Fdisk is used to create and delete partitions on the disk. Defrag is used to optimize the space on a hard drive for faster access.
6. Which statement describes the term ESD?
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.*
It is a type of interference caused by electrical motors.
Explanation:
Electromagnetic Interference (EMI) is a type of interference that can be caused by motors. A device that supplies a constant level of electrical power to a computer is called an uninterruptible power supply (UPS). ESD is the buildup of static electricity and it can cause damage to electronic components when it is discharged through them.
7. What three guidelines should be followed to provide safe conditions when computer equipment is being repaired? (Choose three.)
Turn off the power to the printer and computer before beginning.*
Do not open the power supply.*
If a screwdriver is unavailable, use a knife with a sharp point to loosen screws.
Bend your knees when lifting heavy objects.*
Have all of your extra parts, screws, meters, and tools beside the chassis ready for use.
Ensure that your ID badge is around your neck and visible.
Do not wear loose jewelry unless it is gold, because gold does not conduct electricity.
Explanation:
Basic safety procedures to use while fixing a computer include the following: 1) Remove all jewelry and secure clothing such as ties and ID badge. 2) Turn off the power to all devices. 3) Cover sharp edges with tape. 4) Never open a power supply. 5) Know where the fire extinguisher is and how to use it. 6) Keep your workspace clean and free of clutter. 7) Bend your knees when lifting heavy objects.
8. What tool would be used to determine which network port attaches to a specific office jack?
crimper
loopback adapter
toner probe*
punch down tool
Explanation:
A crimper is used to attach wires to an RJ-45 connector. A punch down tool is used when terminating network cabling. A toner probe has one part that connects to a cable at one end and the toner probe is used to determine which jack or port terminates the cable at the other end. A loopback adapter would be used to check the functionality of a computer port such as the RJ-45 NIC.
9. Which tool can be used to take resistance and voltage measurements?
loopback plug
power supply tester
cable tester
multimeter*
10. What is an accepted method for cleaning computer components?
using glass cleaner on a soft cloth to clean the outside of the mouse*
using rubbing alcohol to clean component contacts
using ammonia to clean the LCD screen
using a lint-free cloth to remove dust inside the computer case
Explanation:
Cleaning the outside of the computer and the mouse can be done with glass cleaner and a soft cloth.
11. Which two devices commonly affect wireless networks? (Choose two.)
incandescent light bulbs
microwaves*
home theaters
cordless phones*
Blu-ray players
external hard drives
Explanation:
Radio Frequency Interference (RFI) is the interference that is caused by radio transmitters and other devices that are transmitting in the same frequency.
12. What are two safety hazards when dealing with laser printers? (Choose two.)
high voltaje*
proprietary power bricks
unwieldy card cages
hot components*
heavy metals
Explanation:
Laser printers require high voltage when initially powered on and to charge the drum in preparation for writing data to the drum. This high voltage requirement is why most laser printers are not normally connected to a UPS. A laser printer also has a fuser assembly used to apply heat and pressure to the toner to permanently attach it to the paper. The laser printer must be unplugged and the fuser assembly must be allowed to cool before working inside the printer.
13. Which type of fastener is loosened and tightened with a hex driver?
slotted screw
cross head screw
six sided bolt*
torx bolt
Explanation:
Use the correct size hex driver to loosen and tighten bolts with a six-sided head.
14. Which tool would be used to create a partition on a hard drive?
Defrag
SFC
Disk Management*
Format
Chkdsk
Explanation:
The Disk Management utility is used to create or delete different types of partitions on a hard disk. The partitions are then formatted with an appropriate file system using the format tool. Chkdsk, Defrag, and SFC are tools used to perform other disk management tasks.
15. What would make it easier for a technician to troubleshoot a problem that has been previously solved by another technician?
personal troubleshooting journal
online forum of manufacturer
online computer manual
centralized closed trouble tickets*
Explanation:
Documentation can be paper-based or stored electronically. It is important that a technician document all services and repairs so that technicians will have this documentation as a reference for similar problems in the future.
16. 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 regulations provided by the local occupational health and safety administration
the local hazardous materials team
the insurance policy of the company
Explanation:
The Safety Data Sheet (SSD) summarizes information about materials, including hazardous ingredients, fire hazards, and first-aid requirements.
17. Fill in the blank.
A technician should keep a personal __journal__ where all steps taken to repair a computer problem are noted including any configuration changes made.
Explanation:
A technician should keep a journal that documents upgrades and repairs. This is a valuable resource for future situations as well as providing reference when providing the formal documentation and invoice.
