Question 28

Read-only memory (ROM) stores instructions for critical system activities.

ROM is a type of non-volatile memory that retains data even when the power is turned off, making it essential for storing firmware and instructions necessary for booting up and performing critical system functions.

A) Graphics processing unit (GPU)

The GPU is primarily responsible for rendering images and processing graphics. It does not store instructions for critical system activities but instead focuses on visual output and performing computations related to graphics rendering.

B) Random-access memory (RAM)

RAM is a volatile memory used for temporarily storing data and instructions that the CPU needs while performing tasks. However, it loses all its data when power is removed and thus does not permanently store critical system instructions.

C) Central processing unit (CPU)

The CPU is the primary processor that executes instructions and performs calculations. While it processes the instructions stored in memory, it does not store those instructions itself, nor is it designed to hold critical system activities permanently.

D) Read-only memory (ROM)

ROM is specifically designed to store firmware and critical system instructions needed for the device to start and operate correctly. Its non-volatile nature ensures that these instructions are preserved without power, making it the ideal component for this purpose.

Conclusion

Read-only memory (ROM) is the definitive choice for storing instructions for critical system activities due to its ability to retain data without power. In contrast, the other options—GPU, RAM, and CPU—serve different roles in computing and do not fulfill the requirement of permanent storage for essential system instructions.