Question

Which of the following statements is/are correct?

i. The OS manages all the resources of a computer.

ii. The OS provides an interface to the user.

iii. The program execution order is decided by the OS when multiple application programs need to be run.

• A. Only ii
• B. Only i and ii
• C. Only ii and iii
• D. All of the above (i, ii and iii)

Answer 1

Answer:

D. All of the above (i, ii and iii)

All of the statements (i, ii, and iii) are correct.

• i. The OS manages all the resources of a computer: The operating system acts as the core resource manager, controlling hardware components like the CPU, memory, storage devices, and input/output peripherals.

• ii. The OS provides an interface to the user: It creates an accessible environment—such as a Graphical User Interface (GUI) or a Command Line Interface (CLI)—so users can interact with the machine easily.

• iii. The program execution order is decided by the OS when multiple application programs need to be run: Through process management and CPU scheduling algorithms, the OS decides which application gets CPU time and in what order they execute.