Question: c) A disadvantage of both Interrupt driven I/O and Programmed I/O is that data must travel over the system bus twice: first to the CPU

c) A disadvantage of both Interrupt driven I/O and Programmed I/O

c) A disadvantage of both Interrupt driven I/O and Programmed I/O is that data must travel over the system bus twice: first to the CPU and then again to its destination. Name one I/O technique which does NOT need this to happen AND explain why

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