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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 what DMA allows devices to do with memory.
Question 2
Easy
Name one advantage of DMA over interrupt-driven I/O.
💡 Hint: Consider the CPU's workload during transfers.
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 the main advantage of DMA over interrupt-driven I/O?
- It is slower
- It requires more CPU involvement
- It allows the CPU to perform other tasks during data transfer
- It eliminates the need for interrupts
💡 Hint: Think about the CPU's ability to multitask.
Question 2
True or False: In burst mode, the DMA transfers data in chunks over several cycles.
- True
- False
💡 Hint: Consider how burst mode operates compared to other modes.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If a CPU can handle one instruction every 10 nanoseconds and a DMA transfer takes 1 second for 1 MB of data, how many instructions can the CPU complete during one transfer?
💡 Hint: Think about how many cycles fit in that timeframe.
Question 2
Devise a hypothetical performance metric assessing the efficiency of using DMA vs. interrupt-driven I/O in a single-bus system.
💡 Hint: Evaluate operational roles and timing conflicts in data transfers.
Challenge and get performance evaluation