CompTIA A+ 80 Practice Questions

Which component converts AC power into DC power for the computer’s internal parts?

• Motherboard

• Power Supply

• CPU

• Expansion Card

Which socket type places pins on the motherboard rather than the processor?

• PGA

• LGA

• DIMM

• SIMM

What type of memory is volatile and stores data temporarily for the CPU?

• ROM

• RAM

• EEPROM

• Flash

Which cooling method is passive and does not require power?

• Heat sink

• Case fan

Which firmware replaced legacy BIOS on modern systems?

• UEFI

• CMOS

• POST

• EEPROM

Which law defines the relationship V=IR?

• Newton’s Law

• Moore’s Law

• Ohm’s Law

• Kirchhoff's Law

Which RAID level provides striping without redundancy?

• RAID 0

• RAID 1

• RAID 5

• RAID 6

Which is the first step in the troubleshooting process?

What tool is best used to test voltage output from a power supply?

• Multimeter

• Screwdriver

• POST card

• Compressed air

Which maintenance step helps prevent overheating in dusty environments?

• Replacing thermal paste

• Cleaning fans and heat sinks

• Updating drivers

• Defragmenting hard drives