Neco 2025 Computer Studies Question 3
Practice objective / multiple choice question 3 from the 2025 Neco Computer Studies examination.
A processor has a base CPI of 1.0. The instruction mix is 30% loads/stores, 20% branches, and the remaining 50% are ALU operations. The data‑cache has a hit rate of 95% with a miss penalty of 100 cycles; a cache hit costs 1 cycle. The branch predictor is 80% accurate and a misprediction costs 5 cycles. Assuming stalls are the only source of CPI increase, calculate the average CPI of the processor.
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About This Question
This is Neco 2025 Computer Studies Question 3. It is one of the objective questions from the 2025 Neco Computer Studies examination.
Difficulty level: Medium .
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