Q 3 Give two reasons why caches are useful. What problems do they solve? What pr
ID: 3842469 • Letter: Q
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Q 3 Give two reasons why caches are useful. What problems do they solve? What problems do they cause? If a cache can be made as large as the device for which it is caching (for instance, a cache as large as a disk), why not make it that large and eliminate the device? Answer: Q 3 Give two reasons why caches are useful. What problems do they solve? What problems do they cause? If a cache can be made as large as the device for which it is caching (for instance, a cache as large as a disk), why not make it that large and eliminate the device? Answer: Q 3 Give two reasons why caches are useful. What problems do they solve? What problems do they cause? If a cache can be made as large as the device for which it is caching (for instance, a cache as large as a disk), why not make it that large and eliminate the device? Answer:Explanation / Answer
Caches are useful for exchanging data between two or more components,at transfer rate at different speeds.Catches are also solve the transfer problem by providing buffer of intermeddiate speed between the components. if they allows faster device finds the data it needs in the catche,and not have to wait for the slower device.
The catche is the faster storage system as compare to the main memory.It stores information as its used on its temporary basis.Data in the catche keep consistent with the data in the components.If the component has the data value change,then the data needs to update in the catche soon.A component may be eliminated by an equal-sized catche.but only if ,
1. The catche and the component have equivalent state saving capacity.
2.It is affordable,because faster storage tends to be more expensive.
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