Which software controls the execution of programs and provides services such as resource allocation, scheduling, input/output control, and data management?

Which software controls the execution of programs and provides services such as resource allocation, scheduling, input/output control, and data management?

• A. Operating System (OS)
• B. Memory Manager
• C. Data Bus
• D. Accumulator

Answer: (A)

The operating system is the software that coordinates how programs run and how hardware resources are shared. It decides which program gets to run and for how long (scheduling), allocates memory and CPU time, manages input/output devices, and handles data management such as files and storage. In short, it provides the services and controls that let software operate smoothly with the hardware. The memory manager is a component that handles memory allocation within the OS, not the entire system that controls execution and services. The data bus is a hardware pathway for moving data between components, not software. The accumulator is a CPU register used for arithmetic operations, not a system-wide software controller.

The operating system is the software that coordinates how programs run and how hardware resources are shared. It decides which program gets to run and for how long (scheduling), allocates memory and CPU time, manages input/output devices, and handles data management such as files and storage. In short, it provides the services and controls that let software operate smoothly with the hardware.

The memory manager is a component that handles memory allocation within the OS, not the entire system that controls execution and services. The data bus is a hardware pathway for moving data between components, not software. The accumulator is a CPU register used for arithmetic operations, not a system-wide software controller.