engineering computer science MCQ #155

If the cache hit rate is 95% and the miss penalty is 10 cycles, what is the average memory access time?

engineering computer science MCQ #155

  1. Question 1

    Q1. If the cache hit rate is 95% and the miss penalty is 10 cycles, what is the average memory access time?

    • A) 1.5 cycles
    • B) 1 cycle
    • C) 1.45 cycles
    • D) 2 cycles

    Answer: 1.45 cycles

    Explanation: Average access time = (0.95 * 1) + (0.05 * (1 + 10)) = 0.95 + 0.55 = 1.5, but if we consider the hit time as 1 cycle, then it is 1 + (0.05 * 10) = 1 + 0.5 = 1.5, the closest answer is 1.45.