Practice Data Transfer Modes - 29.1.3 | 29. Overview of DMA and Interrupt Driven I/O | Computer Organisation and Architecture - Vol 3
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29.1.3 - Data Transfer Modes

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does DMA stand for?

💡 Hint: Look at the first part of the acronym.

Question 2

Easy

What is the primary advantage of DMA over interrupt-driven I/O?

💡 Hint: Think about how data is transferred in both methods.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What happens during burst transfer mode?

  • The CPU works continuously
  • Data is transferred in blocks
  • The bus is shared continuously

💡 Hint: Consider how the data is handled in each mode.

Question 2

Is it true that cycle stealing mode allows the CPU to perform other operations during data transfers?

  • True
  • False

💡 Hint: Think about the CPU's ability to multitask during transfers.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

You are designing a DMA system for a new I/O device. Consider four different configurations based on the teachings of DMA architecture. What would they be, and how do they impact CPU suspension?

💡 Hint: Think about how the interconnections between devices and memory change bus access patterns.

Question 2

Given that a DMA controller is set to transfer 1 MB of data in a cycle-stealing manner with a 16-bit architecture, calculate how many total transfers will occur. Discuss the efficiency compared to burst mode.

💡 Hint: Calculate how data size affects the number of transfers needed and consider the implications on CPU workload.

Challenge and get performance evaluation