Comptia a+ hardware lesson review 3.1.14
Which of the following voltages are provided by an ATX power supply? (Select three.)
12 5 3.3
Which of the following motherboard power connectors typically connect directly to the motherboard? (Select two.)
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 and a +4-pin connector A power supply with a 24-pin ATX connector only
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?
ATX
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.)
Form factor Type and number of connectors Output wattage
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?
Inspect the power supply unit for a manual voltage switch and move it to 230 VAC. Otherwise, no action is necessary.
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.)
Make sure that the power cord is plugged into the wall. Make sure that the surge protector is turned on.
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?
Modular
Which of the following thermal solutions might you find on memory modules?
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?
Replace the power supply.
What is the primary purpose of a 20+4-pin P1 adapter cable on an ATX power supply unit (PSU)?
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?
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?
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?
Watt rating
Which of the following will ensure optimal system cooling? (Select three.)
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.
