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A little help please

I have this sample question on my computer science quiz.
A little help please. I think the answer is 2 p/c.


" in a computer with a cache memory interposed between the processor and the primary memory, cache is the k-way set associative for some fixed k; i.e,..each location primary memory "maps to" can be cached in any of K locations in the cache. Let there be P locations in the primary memory and C locations in the cache on the average how many different locations in primary memory map to a particular location in the cache if k=2 ?"

Thanks.
 
I have this sample question on my computer science quiz.
A little help please. I think the answer is 2 p/c.


" in a computer with a cache memory interposed between the processor and the primary memory, cache is the k-way set associative for some fixed k; i.e,..each location primary memory "maps to" can be cached in any of K locations in the cache. Let there be P locations in the primary memory and C locations in the cache on the average how many different locations in primary memory map to a particular location in the cache if k=2 ?"

Thanks.
Let me Google that for you
 
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