What manages hardware and software, supports the computer's basic functions, and runs programs?

What manages hardware and software, supports the computer's basic functions, and runs programs?

• A. BIOS
• B. Operating System
• C. Application
• D. Firmware

Answer: (B)

The operating system is the software that sits between programs and the computer’s hardware, providing the essential services that all software relies on and managing the resources the hardware provides. It handles how programs get CPU time through scheduling, how memory is allocated and protected, and how input/output and storage devices are accessed via drivers. This layer gives applications a stable interface and environment in which they can run, manage files, communicate over networks, and interact with peripherals. BIOS (or UEFI) is firmware that runs at startup to initialize hardware and boot the system; it doesn’t manage ongoing hardware resources or run user programs. Firmware in general is software embedded in hardware to control specific components, not a general-purpose operating system. Applications are programs that run on top of the OS, not the ones that manage hardware and system basics themselves.

The operating system is the software that sits between programs and the computer’s hardware, providing the essential services that all software relies on and managing the resources the hardware provides. It handles how programs get CPU time through scheduling, how memory is allocated and protected, and how input/output and storage devices are accessed via drivers. This layer gives applications a stable interface and environment in which they can run, manage files, communicate over networks, and interact with peripherals.

BIOS (or UEFI) is firmware that runs at startup to initialize hardware and boot the system; it doesn’t manage ongoing hardware resources or run user programs. Firmware in general is software embedded in hardware to control specific components, not a general-purpose operating system. Applications are programs that run on top of the OS, not the ones that manage hardware and system basics themselves.