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The interrupt servicing mechanism in which the requesting device identifies itself to the processor to be serviced is ___________
- a)Polling
- b)Vectored interrupts
- c)Interrupt nesting
- d)Simultaneous requesting
Correct answer is option 'B'. Can you explain this answer?
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The interrupt servicing mechanism in which the requesting device ident...
Explanation:
Vectored interrupts:
Vectored interrupts is the interrupt servicing mechanism in which the requesting device identifies itself to the processor to be serviced. When an interrupt occurs, the interrupting device provides a unique identification number to the processor, known as a vector, to indicate the specific interrupt that needs to be serviced.
How it works:
- When a device requests an interrupt, it sends a unique interrupt vector to the processor.
- The processor uses this vector to determine the appropriate interrupt service routine to execute.
- This allows for efficient handling of multiple interrupts from different devices, as each device can be identified and serviced quickly based on its unique vector.
Advantages of vectored interrupts:
- Faster response time: Since the processor can quickly identify the interrupting device using the vector, the response time to service the interrupt is minimized.
- Efficient handling of multiple interrupts: Vectored interrupts allow for efficient handling of multiple interrupt requests from different devices without the need for extensive polling or prioritization.
Conclusion:
Vectored interrupts provide a streamlined and efficient mechanism for servicing interrupts from multiple devices by allowing each device to identify itself to the processor using a unique interrupt vector. This helps in minimizing response times and ensuring that interrupts are handled in a timely and efficient manner.
Vectored interrupts:
Vectored interrupts is the interrupt servicing mechanism in which the requesting device identifies itself to the processor to be serviced. When an interrupt occurs, the interrupting device provides a unique identification number to the processor, known as a vector, to indicate the specific interrupt that needs to be serviced.
How it works:
- When a device requests an interrupt, it sends a unique interrupt vector to the processor.
- The processor uses this vector to determine the appropriate interrupt service routine to execute.
- This allows for efficient handling of multiple interrupts from different devices, as each device can be identified and serviced quickly based on its unique vector.
Advantages of vectored interrupts:
- Faster response time: Since the processor can quickly identify the interrupting device using the vector, the response time to service the interrupt is minimized.
- Efficient handling of multiple interrupts: Vectored interrupts allow for efficient handling of multiple interrupt requests from different devices without the need for extensive polling or prioritization.
Conclusion:
Vectored interrupts provide a streamlined and efficient mechanism for servicing interrupts from multiple devices by allowing each device to identify itself to the processor using a unique interrupt vector. This helps in minimizing response times and ensuring that interrupts are handled in a timely and efficient manner.
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The interrupt servicing mechanism in which the requesting device identifies itself to the processor to be serviced is ___________a)Pollingb)Vectored interruptsc)Interrupt nestingd)Simultaneous requestingCorrect answer is option 'B'. Can you explain this answer?
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