question archive Give an example situation in which operating systems effectively consider disk storage to be fourth type of "memory"
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Give an example situation in which operating systems effectively consider disk storage to be fourth type of "memory". [2 Marks]
-From the point of view of the device driver, data may be read from an I/O device using polling, Interrupt-driven programmed I/O, or Direct Memory Access (DMA). Explain each of above terms, and in each case outline using pseudo-code (or a flow chart) the flow of control in the device driver when reading data from the device. [14 Marks]
-Critically evaluate the benefits and limitations of context switching as used in multi-programming and multi-tasking operating systems.