engineering computer science MCQ #148

What is the average memory access time if cache hit rate is 80%, cache access time is 1 cycle, and main memory access time is 10 cycles?

engineering computer science MCQ #148

  1. Question 1

    Q1. What is the average memory access time if cache hit rate is 80%, cache access time is 1 cycle, and main memory access time is 10 cycles?

    • A) 2.8 cycles
    • B) 3 cycles
    • C) 2.2 cycles
    • D) 4 cycles

    Answer: 2.8 cycles

    Explanation: Average access time = (0.8 * 1) + (0.2 * 10) = 0.8 + 2 = 2.8 cycles.