Which statement best describes the purpose of an operating system?

Which statement best describes the purpose of an operating system?

• A. System software that interfaces user and hardware
• B. Application software
• C. Device driver
• D. Compiler

Answer: (A)

The operating system functions as system software that coordinates the computer’s hardware resources and provides a stable interface for applications. It manages the CPU to enable multitasking, allocates and protects memory, handles input/output and device management, and organizes files and security. By abstracting hardware details, it lets programs run without needing to know the specifics of every device, making it easier to develop and run software. A device driver is a specialized component that communicates with a particular piece of hardware, and while drivers are part of the system, they don’t define the overall purpose of the OS. A compiler translates source code into executable programs, which is a separate tool. And application software refers to programs that run on top of the OS, not the purpose of the OS itself.

The operating system functions as system software that coordinates the computer’s hardware resources and provides a stable interface for applications. It manages the CPU to enable multitasking, allocates and protects memory, handles input/output and device management, and organizes files and security. By abstracting hardware details, it lets programs run without needing to know the specifics of every device, making it easier to develop and run software.

A device driver is a specialized component that communicates with a particular piece of hardware, and while drivers are part of the system, they don’t define the overall purpose of the OS. A compiler translates source code into executable programs, which is a separate tool. And application software refers to programs that run on top of the OS, not the purpose of the OS itself.