Practice Processor Suspension During Dma (29.1.2) - Overview of DMA and Interrupt Driven I/O

Practice: Processor Suspension During DMA

Lesson 29.1.2Overview of DMA and Interrupt Driven I/O

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9 questions

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6 sample questions

Question 1.
What happens to the CPU during a DMA operation?
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Think about how traffic works at an intersection.
Question 2.
Name the two modes of DMA operation.
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Consider how data is transferred.
3Question 3.
What is the main function of Direct Memory Access (DMA)?
- A. Control the CPU
- B. Transfer data directly between devices and memory
- C. Increase CPU speed
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Think about how devices interact with memory.
4Question 4.
True or False: In DMA, the CPU is always involved during data transfers.
- True
- False
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Consider the concept of CPU suspension.
Question 5.
You need to transfer a file of 10 MB using burst mode on a 16-bit processor. Calculate how many interruptions occur in the transfer.
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Remember the maximum data that can be transferred in burst mode.
Question 6.
Design a system that optimizes DMA in terms of minimizing CPU suspension while maximizing data transfer speed.
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Think about how systems can balance access between CPU and DMA.

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