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Mr. Dubey • 51.17K Points
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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
Correct answer : Option (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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