Gce Model Questions Vol1 2021 Computer Studies Question 17
Practice objective / multiple choice question 17 from the 2021 Gce Model Questions Vol1 Computer Studies examination.
A processor has a two‑level cache hierarchy. Level 1 (L1) cache has a hit rate of 90% and an access time of \(1\) ns. Level 2 (L2) cache is accessed only on an L1 miss; its hit rate (relative to L1 misses) is 80% and its access time is \(5\) ns. Main memory access time is \(100\) ns. Assuming a miss in L2 also requires a main‑memory access, calculate the average memory access time in nanoseconds.
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About This Question
This is Gce Model Questions Vol1 2021 Computer Studies Question 17. It is one of the objective questions from the 2021 Gce Model Questions Vol1 Computer Studies examination.
Difficulty level: Medium .
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