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

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

(a) 2048

(b) 256

(c) 64

(d) 8

I got this question during an interview.

This question is from Memory Management in chapter Memory Management of Operating System

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The correct option is (c) 64

Best explanation: None.

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