Neco 2025 Data Processing Question 33
Practice objective / multiple choice question 33 from the 2025 Neco Data Processing examination.
A file of 10,000 records is stored sequentially on a disk. Each record is 100 bytes and the disk block size is 4\,KB. The disk rotates at 7200\,rpm, has an average seek time of 8\,ms and a transfer rate of 100\,MB/s.\n(a) Compute the average time required to retrieve a record by sequential search.\n(b) If the same file is indexed with a B+‑tree of order 100 and height 2, compute the average time to retrieve a record using the index. Express both answers in seconds (rounded to two decimal places).
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About This Question
This is Neco 2025 Data Processing Question 33. It is one of the objective questions from the 2025 Neco Data Processing examination.
Difficulty level: Medium .
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