Practice Software Poll Mechanism (27.2.5) - Interrupts and Processor Management

Practice: Software Poll Mechanism

Lesson 27.2.5Interrupts and Processor Management

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10 questions

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6 sample questions

Question 1.
What is the function of the interrupt enable flag?
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Think about control over device communications.
Question 2.
What does polling mean in the context of CPU and devices?
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It involves checking status updates from devices.
3Question 3.
What does the interrupt enable flag do?
- Allows device interrupts
- Prevents all interrupts
- Means no interrupts will occur
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It directly relates to device communications.
4Question 4.
True or False: The CPU services the highest priority interrupt first.
- True
- False
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Consider which task is most urgent.
Question 5.
In a system with multiple devices generating interrupts, design an algorithm for software polling that efficiently identifies which device needs service. Explain the reasoning behind your design choices.
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Consider how you might group devices or limit checks based on earlier status.
Question 6.
Evaluate the pros and cons of implementing a daisy chain polling method in a system with 10+ devices. What factors would influence your decision?
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Think about how the layout affects efficiency.

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