Interrupting a Running Process

A computer system consists of various components that work together to execute tasks and run processes. Sometimes, external events or internal processes can interrupt the execution of a running process. However, one of the options listed does not interrupt a running process, and that is the Scheduler process (option C).

1. What is a running process?
A running process refers to a program or task that is currently being executed by the computer's CPU. It is in an active state and consumes system resources to perform its designated functions.

2. What are interrupts?
Interrupts are signals or events that occur during the execution of a process, which can pause or alter the normal flow of execution. When an interrupt occurs, the CPU temporarily suspends the current process and transfers control to a specific interrupt handler or routine, which handles the interrupt and determines the appropriate action.

3. How do devices interrupt a running process?
Devices, such as input/output peripherals or hardware devices connected to the computer system, can generate interrupts. For example, if a user presses a key on the keyboard or moves the mouse, the corresponding device generates an interrupt signal to inform the CPU. This interrupt causes the CPU to suspend the current process and switch to an interrupt handler that processes the input from the device.

4. How does a timer interrupt a running process?
A timer interrupt is a type of interrupt generated by an internal hardware timer in the computer system. The timer is set to trigger an interrupt after a certain amount of time has elapsed. When the timer interrupt occurs, it interrupts the running process, allowing the CPU to perform other tasks or switch to another process.

5. How does a power failure interrupt a running process?
A power failure refers to a sudden loss of electrical power to the computer system. When a power failure occurs, the computer system shuts down immediately, causing all running processes to be terminated abruptly. This interruption is not handled by the CPU or operating system but is a result of an external event.

6. Why does the scheduler process not interrupt a running process?
The scheduler process is responsible for managing the execution of processes in a multitasking operating system. It determines which processes should be executed and for how long, based on predefined scheduling algorithms. However, the scheduler process itself does not interrupt a running process. Instead, it controls the allocation of CPU time to different processes, ensuring fairness and efficient resource utilization. It operates in the background and does not directly interrupt the execution of a running process.