Chapter 3 (3.1)
Which of the following voltages are provided by an ATX power supply? (Select three.) answer 12 24 15 5 7 3.3 9
12, 5, 3.3
Which of the following motherboard power connectors typically connect directly to the motherboard? (Select two.) answer 24-pin motherboard power 6-pin PCIe power Power on/off switch 4-pin CPU power SATA power
24-pin motherboard power, 4-pin CPU power
You have a motherboard that uses a 24-pin ATX connector. Which types of power supply could you use with this motherboard? (Select two.) A power supply with a 20-pin ATX connector only A power supply with a 24-pin ATX connector only A power supply with a 20-pin ATX and a 6-pin connector A power supply with a 20-pin ATX and a Molex connector A power supply with a 20-pin ATX and a +4-pin connector
A power supply with a 24-pin ATX connector only, A power supply with a 20-pin ATX and a +4-pin connector
A hardware technician is ordering power supply units (PSUs) for the organization's desktop computers. Most PSUs designed for use with desktop PCs are based on which form factor? answer PCIe ATX Mini-ITX SFF
ATX
An employee submits a support ticket stating that their computer will not turn on. Which of the following troubleshooting steps should you take first? (Select two.) answer Make sure that the surge protector is turned on. Make sure that the keyboard and mouse are plugged in. Open the computer and replace the power supply. Make sure that the power cord is plugged into the wall. Use a multimeter to test the power supply
Make sure that the surge protector is turned on. Make sure that the power cord is plugged into the wall.
A hardware technician installed a new power supply unit (PSU) in a workstation and removed unnecessary power connector cables. What type of PSU did the technician install? answer ATX12V ATX Redundant Modular
Modular
You need to replace the power supply in your home desktop computer. Which of the following specifications are the MOST likely to affect your power supply choice? (Select three.) answer An on/off power switch Output wattage Output voltage selections A fan that cools the unit Form factor Type and number of connectors Input voltage selections
Output wattage, Form factor, Type and number of connectors
Which of the following thermal solutions might you find on memory modules? answer Passive heat sink Surface area dissipation Liquid cooling Active heat sink
Passive heat sink
You are testing the power supply in a PC system by measuring the voltage on the 12 V rail using a multimeter. The voltage is registering as +10.1 volts. What should you do? answer Replace the power supply. Disconnect all devices drawing power from the power supply before testing it. Nothing. The power supply is working normally. Switch the voltage selector on the back from 220 VAC to 110 VAC.
Replace the power supply.
What is the primary purpose of a 20+4-pin P1 adapter cable on an ATX power supply unit (PSU)? answer To allow the PSU to operate at higher wattage To increase the voltage output of the PSU To connect additional peripherals to the PSU To provide compatibility with both 20-pin and 24-pin motherboards
To provide compatibility with both 20-pin and 24-pin motherboards
You have a desktop computer that provides a 250-watt power supply. You recently added a four-disk RAID 10 array to the system, and now it spontaneously shuts down. Which of the following would MOST likely solve this issue? answer Upgrade to a power supply that provides more watts. Upgrade to a power supply that provides more volts. Upgrade to smaller capacity hard drives. Use the switch on the power supply to switch from 115 VAC to 230 VAC.
Upgrade to a power supply that provides more watts.
Which component is responsible for transferring heat from the CPU to the liquid in a liquid cooling system? answer Pump Heat sink Radiator Water block
Water block
You have a desktop computer that you want to upgrade. You add several internal and external components. You realize that you need to ensure that your power supply can support these new components. Which of the following power supply ratings BEST describes the rating you would use to determine this? answer AC voltage rating Watt rating Resistance rating DC voltage rating
Watt rating
Your company relocated you from the United States to their United Kingdom office in London. You brought your personal computer with you, and you are in the process of setting it up. Your computer was previously configured to receive 115 VAC, but the electricity in London uses 230 VAC. Which of the following would allow your computer to run on 230 VAC? answer Inspect the power supply unit for a manual voltage switch and move it to 230 VAC. Otherwise, no action is necessary. Purchase a voltage converter and plug your computer into the converter box. Edit the BIOS and modify the voltage input setting. Purchase a new power supply that is compatible with 230 VAC.
Inspect the power supply unit for a manual voltage switch and move it to 230 VAC. Otherwise, no action is necessary.
Which of the following will ensure optimal system cooling? (Select three.) answer Keep the ambient temperature below 80 degrees F. Remove the side panel on the case. Leave space between the case and any walls or obstructions. Stack hard drives next to each other. Bundle cables together and secure unused cables to the case. Remove unused expansion slot covers to increase airflow.
Keep the ambient temperature below 80 degrees F. Leave space between the case and any walls or obstructions. Bundle cables together and secure unused cables to the case.
