Big ah study guide for exam 2

Which of the following ATX12V features was introduced as part of the EPS12V standard?

• The P4 motherboard power connector

• Voltage rails

• The 6-pin AUX connector

• Soft power

Which kind of fire extinguisher should you use for computer equipment?

• Class A

• Class B

• Class C

• Class D

Under what conditions should a PC technician work inside the power supply?

• Only when it is unplugged.

• Only when the technician is wearing an antistatic wrist strap.

• Anytime, because the power supply only has low-energy DC electricity that will not hurt the technician.

• Never, because the power supply has capacitors that hold electrical charges that may harm the technician.

What should you check first if a computer will not start and the fan in the power supply will not turn?

• The voltages coming out of the power supply

• The motherboard power connector

• The power coming into the power supply

• The power switch

When you test voltage with a multimeter, you can assume the outlet or connector is functioning properly if the reading is within a certain percentage of the expected number. What is that maximum percentage by which the reading can vary?

• 5 percent

• 10 percent

• 20 percent

• 25 percent

What voltage does an ATX12V P4 connector provide for motherboards?

• 3.3 V

• 3.3 V, 5 V

When testing an AC outlet, what voltage should the multimeter show between the neutral and ground wires?

• 120 V

• 60 V

• 0 V

• –120 V

What sort of power connector does a traditional hard drive typically use?

• Molex

• Mini

• Sub-mini

• Micro

Arthur installed a new motherboard in his case and connected the ATX power, but his system would not turn on. He sees an extra four-wire port on the motherboard. What’s he missing?

• He needs to plug in the P2 connector for powering auxiliary components.

• He needs to plug in the P3 connector to power the case fans.

• He needs to plug in the P4 connector to power the processor.

• He needs to plug in the Aux connector to connect to a secondary power supply.

What is the effect of exceeding the wattage capabilities of a power supply by inserting too many devices?

• The system will boot normally, but some of the devices will not function properly.

• The system will boot normally, and all of the devices will work, but only for a limited time. After an hour or so, the system will spontaneously shut down.

• The system will not boot or turn on at all.

• The system will try to boot, but the overloaded power supply will fail, burning up delicate internal capacitors.