Neco 2019 Data Processing Question 47

Practice objective / multiple choice question 47 from the 2019 Neco Data Processing examination.

Neco 2019 Data Processing Objective / Multiple Choice Medium Difficulty
Question 47 NECO • 2019 • DATA_PROCESSING • objective

Consider a hierarchical file system with three directory levels. Files in the top level are accessed \(40\%\) of the time, second level \(35\%\), and third level \(25\%\). The respective access times are 5\,ms, 12\,ms and 25\,ms. A cache stores \(20\%\) of the top‑level files, reducing their access time to 1\,ms. Determine the overall average access time (in ms) for the system.

Answer Options

Correct Answer A. 12.13 ms
B. 10.97 ms
C. 13.20 ms
D. 11.85 ms
Correct Answer
A
Correct Option:
12.13 ms

About This Question

This is Neco 2019 Data Processing Question 47. It is one of the objective questions from the 2019 Neco Data Processing examination.

Difficulty level: Medium .

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