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Study Stuff for MCA Examinations - NIMCET
Study Stuff for MCA Examinations - NIMCET
Previous Year Question (PYQs)
Arrange the given steps required for a Direct Memory Access (DMA) transfer in the correct order.
(A) Initiate DMA transfer request
(B) Transfer data directly between peripheral and memory
(C) Processor grants DMA control over the system bus
(D) DMA controller completes data transfer and signals completion
Solution
DMA transfer sequence:
Device initiates DMA request
CPU grants bus control to DMA controller
DMA transfers data between memory and device
DMA signals completion
Order:
A → C → B → D
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