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When dealing with multiple device interrupts, which mechanism is easy to implement?
- a)Polling method
- b)Vectored interrupts
- c)Interrupt nesting
- d)None of the mentioned
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
When dealing with multiple device interrupts, which mechanism is easy ...
Answer: a
Explanation: In this method the processor checks the IRQ bits of all the devices, which ever is enabled first that device is serviced.
Explanation: In this method the processor checks the IRQ bits of all the devices, which ever is enabled first that device is serviced.
Most Upvoted Answer
When dealing with multiple device interrupts, which mechanism is easy ...
Polling method:
Polling method is easy to implement when dealing with multiple device interrupts. In this method, the processor continuously checks each device to determine if an interrupt has occurred.
Explanation:
- The polling method is simple to implement as it involves a straightforward loop that checks each device for interrupts.
- It is a sequential process where the processor polls each device in a predetermined order.
- The polling method is more suitable for systems with a limited number of devices and low interrupt rates.
- It is easy to understand and implement compared to other interrupt handling mechanisms.
Advantages of polling method:
- Easy to implement: Polling method does not require complex hardware or software support, making it easy to implement.
- Predictable behavior: Since the processor controls the order in which devices are checked, the behavior of the system is predictable.
- Low overhead: Polling method has lower overhead compared to other interrupt handling mechanisms, making it suitable for systems with limited resources.
In conclusion, when dealing with multiple device interrupts, the polling method is a straightforward and easy-to-implement mechanism. It may not be the most efficient method for high-speed or high-volume systems, but it is suitable for systems with a limited number of devices and low interrupt rates.
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When dealing with multiple device interrupts, which mechanism is easy to implement?a)Polling methodb)Vectored interruptsc)Interrupt nestingd)None of the mentionedCorrect answer is option 'A'. Can you explain this answer?
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