Practice Direct Memory Access Overview (28.3) - Lecture – 35 - Computer Organisation and Architecture - Vol 3

Practice: Direct Memory Access Overview

Lesson 28.3Lecture – 35

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10 questions

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6 sample questions

Question 1.
What is Direct Memory Access?
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Think about how devices communicate with memory.
Question 2.
Name one benefit of using DMA.
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Consider what happens without CPU waiting.
3Question 3.
What is the purpose of DMA?
- To increase CPU workload
- To facilitate direct data transfer between I/O devices and memory
- To manage devices directly
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Think about what DMA enables devices to do.
4Question 4.
True or False: The CPU is directly involved in data transfers when DMA is used.
- True
- False
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Consider the role of DMA compared to traditional methods.
Question 5.
Describe a scenario in which the lack of DMA would severely impact system performance. Discuss what tasks the CPU would be unable to perform due to busy-waiting.
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Consider user experience versus data transfer efficiency.
Question 6.
Design a DMA controller component that includes control logic, a data count register, and an address register. Describe how each component interacts during a data transfer.
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Focus on the sequential logic of data transfers.

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