A+ Exam Report
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User Name: Chris
Chapter: 2
Date and Time: 8/17/2006 11:49 AM
Results
Correct: 15 / 25
Percentage: 60%
Incorrect Items
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4. What part of an inkjet printer needs to be cleaned periodically in order for the printer to produce good-quality printouts?
User Answer: The ink cartridge casings
Correct Answer: The ink jet nozzles
Explanation: -The ink jet nozzles must be cleaned using the built-in cleaning routine in the printer. This is typically done by pressing a sequence of of buttons on the printer or issuing a command through the Windows printer driver software.
Objective 5.2
Content: Hardware
7. Which of the following is true about cleaning a laser printer?
User Answer: Clean the corona wires with a lint-free cloth dampened with plain water.
Correct Answer: The corona wires never need to be changed.
Explanation: The cleaning pads on some printers need to be changed. Corona wires are built-in and do not. Toner does not clog up the printer.
Objective 5.2
Content: Hardware
9. Where does the power supply store current from the wall outlet?
User Answer: In the power cord
Correct Answer: in its capacitors
Explanation: -Capacitors, by definition, store electricity. Silicon chips and circuit boards use power, but do not store it. The power cord is a conduit for power but not a storage device for it.
Objective 3.2
Content: Hardware
15. The best way to get toner off clothing is with
User Answer: soapy water.
Correct Answer: a magnet.
Explanation: A regular household vacuum cleaner does not have fine enough filters and the toner particles could get in the air, creating a health hazard. Since toner contains iron, it can be most effectively removed with a magnet.
Objective 5.2
Content: Hardware
19. Which of the following is true about ESD?
User Answer: It involves two items of equal voltage potential.
Correct Answer: The item with the higher charge passes electricity to the one with the lower charge.
Explanation: Electrostatic discharge (ESD) occurs because the higher voltage potential object passes electricity to the lower one to equalize the charge.
Objective 3.2
Content: Hardware
20. Which of these components is most likely to harm a technician via electric shock?
User Answer: hard disk
Correct Answer: monitor
Explanation: The keyboard, mouse, and hard disk have very low levels of electricity applied to them. The monitor, on the other hand, has a large, high-voltage capacitor inside.
Objective 3.2
Content: Hardware
21. What kind of liquid is best for cleaning a circuit board?
User Answer: Spray cleaner
Correct Answer: Alcohol on a cotton swab
Explanation: Any kind of liquid is dangerous. There is a danger of shorting out if the circuit board is not completely dry when the power starts up. Alcohol is best because it evaporates more quickly than other liquids.
Objective 3.1
Content: Hardware
22. Which of the following is a false statement?
User Answer: A monitor has a larger capacitor than the PC's power supply.
Correct Answer: Working on monitors is a requirement for earning the A+ certification.
Explanation: b and c are true statements, and A+ certification does not require a technician to know how to work on monitors.
Objective 3.2
Content: Hardware
24. Which of the following is true about cleaning the keyboard?
User Answer: You must unplug the keyboard from the PC before cleaning it.
Correct Answer: To remove loose debris beneath the keys, turn it upside down to shake it.
Explanation: It is not necessary to unplug the keyboard from the PC, but you do need to turn the PC off. Removing the keys is neither necessary nor desirable because of the difficulty in reassembling it.
Objective 3.1
Content: Hardware
25. Which of the following is true about the power supply?
User Answer: It delivers 110-volt current to the motherboard and other system components.
Correct Answer: It steps down the voltage, converts AC to DC current, and apportions electricity as needed to the system components.
Explanation: The 110-volt current is too high a voltage for system components. The outside of the power supply is perfectly safe to touch.
Objective 3.2
Content: Hardware