Q.

In memory-mapped I/O                           

A. the i/o devices and the memory share the same address space
B. the i/o devices have a separate address space
C. the memory and i/o devices have an associated address space
D. a part of the memory is specifically set aside for the i/o operation
Answer» A. the i/o devices and the memory share the same address space
Explanation: its the different modes of accessing the i/o devices.
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