Question: When a computer system uses the CPU offloads the execution of I / O instructions and allows data transfer between the memory and I /

When a computer system uses the CPU offloads the execution of I/O instructions and allows data transfer between the memory and I/O modules directly without passing the CPU.
memory-mapped I/O
programmed I/O
direct memory access (DMA)
interrupt-driven I/O
When a computer system uses the CPU offloads the execution of

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