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

Liquid damage typically affects only the keyboard assembly; replacing the keyboard or its ribbon cable restores functionality without a costly motherboard swap.

Question 2

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

Accepted Answer

80 Plus certification

Answer

80 Plus certification levels (Bronze, Silver, Gold, Platinum, Titanium) indicate the PSU's AC-to-DC conversion efficiency at various load levels.

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 triangle on both the CPU and socket marks pin 1, ensuring the processor is inserted in the correct orientation to avoid damage.

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

Driving four 4K displays requires a GPU with enough video outputs and VRAM to buffer and render all four high-resolution framebuffers.

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

The EPS 12V (8-pin) connector delivers dedicated 12-volt power directly to the motherboard's CPU voltage regulator module.

CompTIA Practice Test

CompTIA Practice Test

CompTIA Hardware Practice 4