Mr Ford's Guide to the A+ Certification Exam Quiz

What is the primary function of a computer's power supply?

• To store data temporarily

• To convert AC power to DC power

• To increase the computer's speed

• To cool down the computer

Why should you avoid opening a computer's power supply?

• It is too complex to understand

• It contains capacitors that can store dangerous electricity

• It can void the warranty

• It is illegal to open

Which type of fire extinguisher is suitable for electrical fires?

• Type A

• Type B

• Type C

• Type D

What should you do after using a fire extinguisher on a computer fire?

• Leave the area immediately

• Call the fire department to ensure the fire is completely out

• Pour water to cool down the area

• Turn off all electrical devices

At what voltage can electrostatic discharge (ESD) be felt by humans?

• 3,000 volts

• 300 volts

• 30,000 volts

• 30 volts

Which type of ESD failure is characterized by intermittent issues that are hard to diagnose?

• Upset failure

• Degradation failure

• Catastrophic failure

• Minor failure

What is a common method technicians use to prevent ESD while working on computers?

• Wearing rubber gloves

• Keeping a body part in contact with the computer's chassis

• Using a humidifier

• Standing on a wooden floor

Why is it important to maintain at least 50% humidity in a room when working on computers?

• To keep the computer components clean

• To improve air quality

• To reduce the risk of ESD

• To prevent overheating

What can excessive dust inside a computer cause?

• Reduced power consumption

• Faster processing speed

• Electrical charges leading to erratic behavior

• Improved performance

What do black specs around a computer's power supply indicate?

• Dust accumulation

• A faulty power supply

• Roach droppings indicating an infestation

• Burnt components