Describe what problems could occur when mixing DMA and virtual memory. Which of the peripherals in the table could introduce such problems? How can they be avoided?

Direct Memory Access (DMA) allows devices to access memory directly rather than working through the CPU. This can dramatically speed up the performance of peripherals, but adds complexity to memory system implementations. Explore DMA implications by answering the questions about the following peripherals.

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a. Mouse Controller b. Ethernet Controller