CompTIA Hardware Practice 4

Question 1

A laptop's built-in keyboard stops working after a liquid spill, but an external USB keyboard works fine. What is the most cost-effective repair?

Accepted Answer

Replace the laptop keyboard ribbon cable or keyboard assembly

Answer

Replace the entire motherboard

Answer

Reinstall the operating system

Answer

Update the keyboard firmware

Question 2

Which power supply specification describes its efficiency at converting AC input to DC output?

Accepted Answer

80 Plus certification

Answer

Wattage rating

Answer

Rail amperage

Answer

Form factor

Question 3

A technician is installing a CPU and notices one corner of the socket has a small triangle indicator. What does this indicate?

Accepted Answer

CPU pin 1 alignment for correct installation orientation

Answer

The socket voltage regulator location

Answer

The socket locking mechanism release point

Answer

The integrated graphics output pin

Question 4

A workstation needs to run four 4K monitors simultaneously. Which hardware consideration is most critical?

Accepted Answer

GPU with sufficient video outputs and VRAM

Answer

Total system RAM capacity

Answer

Number of USB ports on the motherboard

Answer

CPU cache size

Question 5

What is the function of the EPS 12V connector on a motherboard?

Accepted Answer

Supplies dedicated 12V power to the CPU voltage regulator

Answer

Provides power to PCIe slots

Answer

Powers SATA devices on the board

Answer

Connects the front panel power button

Question 6

A technician suspects a hard drive is failing. Which built-in drive technology provides real-time health monitoring data?

Accepted Answer

S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology)

Answer

TRIM

Answer

NCQ (Native Command Queuing)

Answer

AHCI (Advanced Host Controller Interface)

Question 7

Which bus standard is used by modern CPUs to communicate directly with RAM, bypassing the traditional northbridge chipset?

Accepted Answer

Integrated Memory Controller (IMC) on-die

Answer

PCIe

Answer

FSB (Front Side Bus)

Answer

HyperTransport