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This chapter is from the book

This chapter is from the book

IT Essentials, 5th EditionIT Essentials, 5th Edition

Learn More Buy

This chapter is from the book

This chapter is from the book

IT Essentials, 5th EditionIT Essentials, 5th Edition

Learn More Buy

Check Your Understanding

You can find the answers to these questions in Appendix A, “Answers to ‘Check Your Understanding’ Questions.”

  1. How should a technician discharge static buildup while working on a computer system?
    1. Maintain contact with the painted part of the computer case.
    2. Maintain contact with an unpainted part of the computer case.
    3. Touch an antistatic wrist strap before touching any computer equipment.
    4. Touch an antistatic mat before touching any computer equipment.
  2. Which of the following is a fact sheet that summarizes information about material identification, including hazardous ingredients that can affect personal health, fire hazards, and first aid requirements?
    1. ESD
    2. MSDS
    3. OSHA
    4. UPS
  3. Which two statements are true of static electricity? (Choose two.)
    1. It can distort wireless signals.
    2. More than 10,000 volts can build up on a person.
    3. As few as 30 volts can damage computer components.
    4. It will not harm computer components as long as the computer is plugged in.
    5. Keeping the air cool and dry can decrease the buildup of static electricity.
    6. It is generated by devices such as motors, power lines, and radio transmitters.
  4. Which recommendation should be followed first when a fire in the workplace is out of control?
    1. Try to use the elevators to get to the lowest floor faster.
    2. Get out of the room or building and contact emergency services for help.
    3. Use the company water system to stop the fire from extending to other areas.
    4. Try to control the fire with proper extinguishers.
  5. Which device is designed specifically to protect computers and electrical devices from excess electrical voltage?
    1. Power strip
    2. Standby power supply
    3. Surge protector
    4. Uninterruptible power supply
  6. Which piece of software is designed to protect against unauthorized communications to and from a computer?
    1. Security center
    2. Port scanner
    3. Antimalware
    4. Antivirus
    5. Firewall
  7. What is an accepted method for cleaning computer components?
    1. Using ammonia to clean the LCD screen
    2. Using rubbing alcohol to clean component contacts
    3. Using a lint-free cloth to remove dust inside the computer case
    4. Using glass cleaner on a soft cloth to clean the outside of the mouse
  8. Which tool would be used to scan Windows critical system files and replace any corrupted files?
    1. SFC
    2. CHKDSK
    3. Fdisk
    4. Defrag
  9. Which condition refers to a sudden and dramatic increase in voltage, which is usually caused by lighting?
    1. Brownout
    2. Sag
    3. Spike
    4. Surge
  10. Which tool can be used to take resistance and voltage measurements?
    1. Multimeter
    2. power supply tester
    3. cable tester
    4. loopback plug

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