Question 42

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

Read-only memory (ROM) is a type of non-volatile storage that holds firmware or software that is essential for booting and operating the computer. It contains instructions that are critical for the system's activities, ensuring that the hardware operates correctly.

A) Random-access memory (RAM)

Random-access memory (RAM) is a type of volatile memory used for temporarily storing data and instructions that the CPU needs while executing tasks. However, it does not store critical system instructions persistently, as its contents are lost when the power is turned off.

B) Read-only memory (ROM)

Read-only memory (ROM) is specifically designed to store firmware and critical system instructions that do not change frequently. This makes it the correct choice, as it retains essential data even when the system is powered off, allowing the system to initialize and perform vital operations.

C) Central processing unit (CPU)

The central processing unit (CPU) is the main processing unit of a computer that executes instructions from programs. While it processes data and commands, it does not store instructions permanently; rather, it relies on RAM and ROM for this purpose.

D) Graphics processing unit (GPU)

The graphics processing unit (GPU) is primarily responsible for rendering images and video. It does not store critical system instructions; instead, it focuses on processing graphical data to enhance visual performance in computing tasks.

Conclusion

Read-only memory (ROM) is crucial for storing the instructions necessary for critical system activities, making it the definitive correct answer. In contrast, RAM, CPU, and GPU serve different functions within a computer system and do not fulfill the role of storing these essential instructions permanently. Thus, they fail to meet the requirements outlined in the question.