Computer Science · Computer Architecture
In DMA data transfer, the total time is given by: T = Tbus_grant + N × Tmem_transfer + Tbus_release. Which statement is most accurate?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Transfer time depends only on CPU speed.
- 2DMA transfers bytes at CPU speed while CPU executes other tasks.
- 3DMA controller takes full bus control, transfers block, then releases bus.✓
- 4CPU keeps partial control of bus during DMA transfer.
Correct answer
DMA controller takes full bus control, transfers block, then releases bus.
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