The mechanism where a Direct Memory Access (DMA) controller transfers data a word at a time is called _______________ Question 19 options:
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Select the correct alternative from the given choices. Which of the following DMA transfer modes an interrupt handling mechanisms will enable the highes $\mathrm{I} /$ O bandwidth? (A) Block transfer and polling interrupt (B) Cycle stealing and polling interrupt (C) Block transfer and vectored interrupt (D) Transparent DMA and vectored interrupt
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Select the correct alternative from the given choices. Which of the following enables peripherals to pass a signal down the bus to the next device on the bus during polling of the device? (A) Interrupt vectoring (B) Cycle stealing (C) DMA (D) Daisy chain
22. From amongst the following given scenarios, determine the right one to justify interrupt mode of data transfer: i) Bulk transfer of several kilobytes ii) Moderately large data transfer of more than 1kb iii) Short events like mouse action iv) Keyboard inputs a. i and ii b. ii c. i, ii, and iv d. iv
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