Practice - Overview of DMA and Interrupt Driven I/O
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Practice Questions
Test your understanding with targeted questions
What does DMA stand for?
💡 Hint: Think about how it accesses memory.
Which mode allows for the entire block of data to be transferred at once?
💡 Hint: It’s like doing everything in one shot.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does DMA allow the CPU to do during data transfer?
💡 Hint: Reflect on how DMA interacts with the CPU.
In which transfer mode does the CPU get interrupted more frequently?
💡 Hint: Think of how often interrupts occur.
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Challenge Problems
Push your limits with advanced challenges
Scenario: A DMA controller is set to transfer 100 MB of data with a maximum transfer unit of 64 KB. How many times will the CPU need to respond to DMA requests during this process?
💡 Hint: Calculate how many blocks of 64 KB fit into 100 MB.
Evaluate how switching from interrupt-driven I/O to DMA can affect system responsiveness in a high-load scenario.
💡 Hint: Consider the implications of reduced CPU suspension.
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Reference links
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