Computer Science · Computer Architecture

A computing system uses a multi-level memory hierarchy consisting of registers, cache, main memory, and secondary storage. The system executes a program containing nested loops and large arrays. During execution, it is observed that performance degrades significantly when the dataset size exceeds a certain limit. Based on this scenario, evaluate the following statements: A. The degradation in performance is likely due to reduced cache hit ratio as working set size increases B. Temporal locality ensures that recently accessed data will never be replaced from cache C. Spatial locality implies that contiguous memory locations are likely to be accessed D. Thrashing may occur if the working set exceeds the available physical memory E. Increasing cache size always guarantees proportional improvement in performance Which of the above statements are correct?