Which of the following is a part of the building blocks of a cloud computing system?

The correct answer is CPU, as it represents a fundamental building block of cloud computing systems. The central processing unit (CPU) is responsible for executing instructions and processing data within the cloud infrastructure. It is an essential component that enables the computational capabilities of virtual machines and cloud services, facilitating tasks such as data processing and application execution.

In cloud computing, resources like CPUs are provisioned dynamically, allowing for elasticity and scalability, which are key features of cloud architecture. The architecture requires significant processing power to handle multiple user requests, applications, and data, making the CPU a critical element in ensuring efficient cloud operations.

In contrast, while the operating system (OS), applications, and ROM hold importance in computing, they are not fundamental components of the cloud infrastructure like the CPU. The OS manages hardware and software resources, applications perform specific tasks, and ROM is a type of memory used to store firmware. However, without a CPU performing computations, the entire system would be non-functional, emphasizing its foundational role in cloud computing.