Neco 2023 Computer Studies Question 15
Practice objective / multiple choice question 15 from the 2023 Neco Computer Studies examination.
A computer system has a two‑level memory hierarchy. The L1 cache has an access time of 2 ns and a hit rate of 0.90. The L2 cache has an access time of 10 ns and a hit rate of 0.95 for accesses that miss in L1. Main memory access time is 80 ns. Using the formula \(AMAT = t_{L1} + (1-h_{L1})\times[t_{L2} + (1-h_{L2})\times t_{M}]\), calculate the average memory access time (AMAT) in nanoseconds, rounded to one decimal place.
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About This Question
This is Neco 2023 Computer Studies Question 15. It is one of the objective questions from the 2023 Neco Computer Studies examination.
Difficulty level: Medium .
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