Question: Given that cache memory is much faster than system RAM, explain TWO (2) reasons why computer system usually only have a small amount of cache

Given that cache memory is much faster than system RAM, explain TWO (2) reasons why computer system usually only have a small amount of cache memory compare to RAM. (4 marks)

b) Give ONE (1) efficiency comparison for each of the following I/O handling mechanism: CPU polling, Interrupt-driven I/O and Direct Memory Access (DMA).?

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