Physics · Computer Science - Operating Systems
In cycle stealing mode of Direct Memory Access (DMA) data transfer, which of the following best describes the operation of the DMA controller?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The DMA controller transfers an entire block of data in one continuous burst, preventing CPU access during the transfer.
- 2The DMA controller transfers one byte or word at a time, interlacing with CPU operations by taking over the bus for a single clock cycle.✓
- 3The CPU and DMA controller access the system bus simultaneously without any arbitration.
- 4The DMA controller operates only when the CPU is permanently in a halted or idle state.
Correct answer
The DMA controller transfers one byte or word at a time, interlacing with CPU operations by taking over the bus for a single clock cycle.
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