AFirmware
BOperating system
CApplication Software
DUtility software
Answer:
B. Operating system
Read Explanation:
The operating system (OS) is the fundamental software that acts as an interface between the computer's physical hardware and the user. It manages all hardware resources and provides a platform for application software to run.
Key Functions of an Operating System:
1. Hardware Management - Controls and coordinates the use of hardware components like CPU, memory, storage devices, and input/output devices
2. User Interface - Provides a way for users to interact with the computer through graphical user interfaces (GUI) or command-line interfaces (CLI)
3. Resource Allocation - Manages system resources and allocates them to various programs and processes
4. File Management - Organizes and manages files and directories on storage devices
Why Other Options are Incorrect:
Firmware (Option A) - This is software permanently programmed into hardware devices (like BIOS). While it operates at a low level, it's not the primary interface between hardware and user
Application Software (Option C) - These are programs designed for end-users to perform specific tasks (like word processors, browsers). They run on top of the operating system
Utility Software (Option D) - These are programs that help maintain and optimize the computer system. They also run on top of the operating system
Examples of Operating Systems: Windows, macOS, Linux, Android, iOS
