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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does DMA stand for?
💡 Hint: Think about the role of DMA in data movement.
Question 2
Easy
Explain the role of the DMA controller.
💡 Hint: Consider what the CPU does initially.
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 is Direct Memory Access (DMA)?
- A method for CPU-controlled data transfer
- A mechanism for hardware communication with memory directly
- A technique for saving power
💡 Hint: Consider how the CPU interacts with memory.
Question 2
True or False: In DMA, the CPU is involved in every data transfer.
- True
- False
💡 Hint: Think about CPU workload during transfers.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Consider a situation where a CPU has to transfer 4KB of data to a peripheral without DMA versus using DMA. Calculate and discuss the CPU cycles spent in both scenarios if the CPU takes 10 cycles per byte without DMA and 2 cycles per byte with DMA.
💡 Hint: Think about the overall CPU cycle management.
Question 2
Discuss the impacts on system performance and power consumption when using DMA in a system with high I/O demands.
💡 Hint: Contrast the CPU's activity levels with and without DMA.
Challenge and get performance evaluation