List of top Computer Organization and Architecture Questions on Cache Memory

Consider a system with a processor and a \(4\) KB direct mapped cache with block size of \(16\) bytes. The system has a \(16\) MB physical memory. Four words \(P\), \(Q\), \(R\), and \(S\) are accessed by the processor in the same order \(10\) times. That is, there are a total of \(40\) memory references in the sequence \(P, Q, R, S, P, Q, R, S,\ldots\)

Assume that the cache memory is initially empty. The physical addresses of the words are given below (\(1\) word \(=1\) byte).

\(P: 0x845B32,\ Q: 0x845B26,\ R: 0x845B36,\ S: 0x846B32\)

Which of the following statements is/are true?

Note: \(1K=2^{10}\) and \(1M=2^{20}\)

Given below are two statements:
Statement I: Cache memory is a very high speed memory placed in between CPU and Hard Disk.
Statement II: One major advantage of virtual memory is that programs can be larger than main memory.
In the light of the above Statements, choose the most appropriate answer from the options given below :