Chapter 12: Environmental and Safety Concepts - CompTIA IT Fundamentals Study Guide: Exam FC0-U51
Terms in this set (20)
1. You need to purchase an inkjet printer cartridge, and you want to see what chemicals are in it. How do you obtain the MSDS for this product?
A. You are not legally allowed to have an MSDS for this product.
B. Visit the website of the printer cartridge manufacturer.
C. The store is required to give you one at the time of purchase.
D. It's contained in the packaging of the printer cartridge.
The manufacturer of the ink cartridge will have an MSDS on their website.
2. When cleaning a monitor, you should not use cleaning solutions that contain what?
D. All of the above
Ammonia can ruin the coating on a monitor screen, so it should never be used. Many common glass cleaners contain ammonia, so be careful of them.
3. When considering ergonomics, where should the keyboard and mouse be placed?
A. Level with the user's elbows
B. Six inches below the user's elbows
C. Six inches above the user's elbows
D. On the computer desk where they work
The keyboard and mouse should be approximately level with the user's elbows, so the elbows can be at 90 degrees and there is little to no bend required in the user's wrists. If the desk does not allow for this, then adjustments to the desk or seating arrangement should be made.
4. What is the approximate minimum level of static charge for humans to feel a shock?
A. 30 volts
B. 300 volts
C. 3,000 volts
D. 30,000 volts
Humans can feel a shock of as little as 3,000 volts. However, computer equipment can be damaged by as little as 300 volts.
5. Geri, a user, is complaining of neck pain and thinks it's because of work. What should you check to see if it's a problem?
A. If her monitor is too high or too low
B. If her monitor is too far away or too close
C. If her keyboard and mouse are level with her wrists
D. If she is not sitting properly with her feet flat on the floor
Neck issues can be caused by a monitor being too high or too low, causing the user to strain their neck up or down in order to read it. The top of the screen should be at or slightly below eye level for optimal placement.
6. Why does static electricity not kill you, given that it is a high‐voltage shock?
A. Short duration
B. Low amps
C. It's DC volts, not AC
D. Low resistance
Shocks from static electricity can hurt a bit, but generally they won't kill a person. This is because the amps of an electric shock are low.
7. Which of the following can cause data loss via crosstalk between adjacent cables?
A. ESD B. RFD C. EMI D. MSDS10.
Electromagnetic interference (EMI) can cause loss of data due to crosstalk, which occurs when one electrical signal interferes with another.
8. Which of the following contains a carcinogen and therefore needs to be recycled?
A. Laser printer toner
B. Inkjet ink cartridges
All of the answers (toner cartridge, inkjet cartridges, scanners, and batteries) should be recycled. The only one of the four that is a known carcinogen is laser printer toner.
9. In an ergonomic assessment, which of the following is true about the optimal sitting position?
A. Feet should be flat on the floor or on a footrest.
B. The hips should be at a 90 degree angle to the top of the legs.
C. Elbows should be at the sides and at a 90 degree angle. D. A and B
E. A and C
F. B and C
G. A, B, and C
All three answers provided are correct. Feet should be flat on the floor or on a footrest. The user should be sitting upright with the hips bent 90 degrees or slightly more. Elbows should be at the sides and at a 90 degree angle. The lower back should have lumbar support from the chair.
10. You are recycling non‐working computer parts. should not be opened? Which components contain capacitors and should not be opened? (Choose two.)
A. CRT monitors
B. LCD monitors
C. Power supplies
D. Spinning hard drives
10. A, C.
CRT monitors and power supplies contain capacitors, which can store energy even after they are powered off and unplugged. Never open either one
11. You are configuring an office with new computers. What should you recommend the temperature be set at for optimal desktop computer performance?
A. Warmer than is comfortable for humans
B. The same as is comfortable for humans
C. Colder than is comfortable for humans, but not freezing D. Below freezing
Computers like it colder than humans do. Below freezing is not good though, because if there is frost, and it's heated by computer components, that can form water, which can cause a short circuit.
12. Which of the following is a more common name for ESD?
A. Static electricity
B. Radio frequency interference
C. Magnetic interference
D. Battery backup
ESD is short for electrostatic discharge, which is static electricity.
13. You need to purchase a battery backup system for a desktop PC. What type of device do you need?
An uninterruptable power supply (UPS) is a device with batteries in it that can power a computer in the event of a power failure.
14. You have four AA alkaline batteries that you just removed from a remote‐control device. What is the recommended way to dispose of these batteries?
A. Throw them in the trash.
B. Flush them down the toilet.
C. Incinerate them.
D. Take them to a recycling center.
Batteries should always be taken to a recycling center to dispose of them properly.
15. What is the optimal humidity level for computer operation?
A. 30 percent
B. 50 percent
C. 70 percent
D. 90 percent.
A good range for humidity for computers is between 40 and 80 percent, but the ideal is around 50 percent.
16. What is the recommended way to get debris out from under the keys of a keyboard?
A. Dig it out with a screwdriver.
B. Blow it out with compressed air.
C. Heat it until the debris burns up.
D. Use a magnet
There are two ways to remove debris from a keyboard. The first is to blow it out with compressed air. The second is to turn it upside down and shake or tap it.
17. Which of the following measures can be implemented to reduce the risk of ESD? (Choose two.)
A. Antistatic wrist strap
B. Antistatic bag
C. Antistatic hair net
D. Shuffling your feet
17. A, B.
Antistatic wrist straps and bags are good to use to help reduce the risk of ESD. Antistatic mats to work on computers are useful as well. Shuffling your feet actually increases the risk of ESD.
18. You are placing computers at users' workstations. What consideration should you make for airflow, if any?
A. No airflow considerations need to be made.
B. Place the system to minimize airflow around the computer to reduce dust.
C. Place the system to maximize airflow around the computer.
D. Place the system on the edge of the desk to maximize airflo
Maximizing airflow around a computer is a good thing. You don't want to set the system on the edge of the desk, though, because that introduces a risk of having the computer falling off or getting knocked over.
19. Your home office experiences frequent power surges. You want to purchase a device to protect your computer equipment. What should you buy? (Choose two.)
B. Surge protector
C. Power strip
D. Power generator
19. A, B.
An uninterruptable power supply (UPS) and surge protector can protect your computer equipment versus power surges. Power strips can accommodate multiple components but do nothing to protect against surges.
20. What is the name of the directive that restricts the use of six hazardous materials in the manufacture of various types of electronic equipment?
The Restriction of Hazardous Substances (RoHS) Directive, which took effect in 2006, restricts the use of lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, and polybrominated diphenyl ether in the manufacture of various types of electronic equipment.
YOU MIGHT ALSO LIKE...
ASCP MLT/MLS Certification Exam (BOC) Preparation
TestOut Flashcards - 2.4 PC Maintenance
TestOut Flashcards - 2.1 Protection and Safety
AIMM Forklift Course
OTHER SETS BY THIS CREATOR
Chapter 11: Computer Support and Backups - CompTIA IT Fundamentals Study Guide: Exam FC0-U51
Chapter 10: Buying and Configuring a Workstation - CompTIA IT Fundamentals Study Guide: Exam FC0-U51
Chapter 9: Security Best Practices Comp - TIA IT Fundamentals Study Guide: Exam FC0-U51
Chapter 4: Software Applications - Comp TIA Fundamentals Exam FC0-U51
THIS SET IS OFTEN IN FOLDERS WITH...
Chapter 5: Networking Technologies and Wireless Routers - Comp TIA Fundamentals Exam FC0-U51
Chapter 2: Peripherals and Connectors - Comp TIA Fundamentals Exam FC0-U51
Chapter 3: Operating Systems - Comp TIA Fundamentals Exam FC0-U51
Chapter 1: Core Hardware Components - Comp TIA Fundamentals Exam FC0-U51