Practice Eliminating Busy Waiting (26.4.1) - Lecture – 34 - Computer Organisation and Architecture

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6 sample questions

Question 1.
What is busy waiting?
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Think about how the CPU checks for device status.
Question 2.
Explain what interrupt-driven I/O allows the CPU to do.
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Consider how the CPU can multitask.
3Question 3.
What is the main problem with programmed I/O?
- A. It saves CPU time
- B. It increases busy waiting
- C. It allows multitasking
- D. It uses a single process
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Consider the idle CPU time.
4Question 4.
True or False: Interrupt-driven I/O allows the CPU to do other tasks while an I/O operation is pending.
- True
- False
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Think about how interrupts change waiting behavior.
Question 5.
You are designing an interrupt-driven I/O system. What considerations should be made for different types of I/O devices?
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What devices might require more frequent or less frequent interrupts?
Question 6.
Analyze the impact of using programmed I/O for a high-speed network interface compared to interrupt-driven I/O. What could be the potential bottlenecks?
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Think about how often data comes in versus how often the CPU checks for it.

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