CompTIA Practice Test Hardware #2

Question 1

Which cooling mechanism keeps internal PC components at the lowest temperatures possible?

Accepted Answer

Liquid Cooling

Answer

Liquid cooling systems are generally the most effective cooling mechanism for keeping internal PC components at the lowest possible temperatures. Unlike air cooling, which relies on fans and heatsinks to dissipate heat into the surrounding air, liquid cooling uses a coolant that absorbs heat more efficiently and transfers it away from critical components like the CPU and GPU.

Question 2

A power supply unit's fan is not operating. What do you think you should do?

Accepted Answer

Change the power supply unit

Answer

If a power supply unit's (PSU) fan is not operating, the PSU will quickly overheat, leading to potential failure and damage to other computer components. Attempting to fix or replace the fan within a PSU is dangerous due to residual electrical charge and often impractical. The safest and most recommended course of action is to replace the entire power supply unit.

Question 3

In a daisy chain, how many devices may be linked to a single USB port?

Accepted Answer

Up to 127

Answer

The Universal Serial Bus (USB) standard allows for a significant number of devices to be connected in a daisy chain configuration. Specifically, a single USB host controller can support up to 127 devices, including any USB hubs used in the chain. This high capacity enables extensive peripheral connectivity from a single port.

Question 4

How many pins are there on the standard Parallel printer cable connecting end?

Accepted Answer

25

Answer

The standard Parallel printer cable, commonly used for older printers, utilizes a DB-25 connector on the computer end. This connector is characterized by having 25 pins arranged in two rows. This design facilitated the parallel transmission of data, sending multiple bits simultaneously.

Question 5

Which of the following is utilized as a place holder in a RIMM-based system?

Accepted Answer

C-RIMM

Answer

In RIMM (Rambus In-line Memory Module) based systems, all memory slots must be populated for the system to function correctly and maintain signal integrity. A C-RIMM (Continuity RIMM) is a special module that does not contain actual memory chips but acts as a placeholder. It completes the electrical circuit in any unused RIMM slots, ensuring proper system operation.