Practice Explain Design Issues Of Dma Module (28.2.3) - Lecture – 35 - Computer Organisation and Architecture - Vol 3

Practice: Explain design issues of DMA module

Lesson 28.2.3Lecture – 35

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9 questions

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6 sample questions

Question 1.
What does DMA stand for?
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Think about how data is accessed directly without CPU involvement.
Question 2.
Name one advantage of using DMA.
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Consider the workload of the CPU.
3Question 3.
What is the main purpose of a DMA controller?
- To facilitate CPU processing
- To enable direct data transfer between memory and devices
- To manage interrupts from devices
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Consider what it allows data to do without the CPU's help.
4Question 4.
True or False: DMA allows CPU to manage data transfers actively during execution.
- True
- False
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Think about the difference between DMA and traditional methods.
Question 5.
You have a DMA controller connected to a hard disk and a main memory. Develop the step-by-step algorithm the DMA would use to transfer a 2 MB file to RAM, considering necessary conditions and constraints.
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Consider how the controller coordinates actions to ensure the transfer works correctly.
Question 6.
Evaluate the potential risks associated with having multiple DMA operations occurring simultaneously. How would you mitigate these risks from a design perspective?
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Think about how devices might interfere with one another and how to avoid that.

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