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Question

Consider the computer with 8 Mbytes of main memory and a 128 K cache. The cache block size is 4K. It uses a direct mapping scheme for cache management. How many different main memory blocks can map into a given physical cache block?

A
2048
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B
56
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C
64
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D
None of these
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Solution

The correct option is C 64

The computer with 8 Mbytes of main memory and a 128 K cache. The cache block size is 4K. It uses a direct mapping scheme for cache management. 64 different main memory blocks can map into a given physical cache block.

The cache provides in-memory storage and management for your data.

A cache is a hardware or software component that stores data so that future requests for that data can be served faster; the data stored in a cache might be the result of an earlier computation or a copy of data stored.

The simplest way of associating main memory blocks with cache block is the direct mapping technique.



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