Neco 2024 Data Processing Question 2
Practice objective / multiple choice question 2 from the 2024 Neco Data Processing examination.
A file can be accessed by three methods: sequential (average access time 12 ms), indexed (8 ms) and direct (4 ms). The probabilities of using these methods are 0.5, 0.3 and 0.2 respectively. The system requires an overall average access time of at most 7 ms. If the relative ratio between sequential and indexed accesses must remain the same, what minimum proportion of direct‑access requests is needed to meet the requirement? Express your answer as a decimal rounded to two places.
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About This Question
This is Neco 2024 Data Processing Question 2. It is one of the objective questions from the 2024 Neco Data Processing examination.
Difficulty level: Medium .
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