Neco 2021 Data Processing Question 12

Practice objective / multiple choice question 12 from the 2021 Neco Data Processing examination.

Neco 2021 Data Processing Objective / Multiple Choice Medium Difficulty
Question 12 NECO • 2021 • DATA_PROCESSING • objective

A file contains 10,000 records each 100 bytes. The disk block size is 4\,KB. An indexed‑sequential file uses a primary index that fits in one block. Disk seek time = 5\,ms, rotational latency = 4\,ms, and transfer time = 0.02\,ms per KB. Assuming records are uniformly distributed, calculate the average time (in milliseconds) required to locate a record.

Answer Options

A. 20.4 ms (approximately)
B. 22.1 ms (approximately)
Correct Answer C. 18.2 ms (approximately)
D. 15.6 ms (approximately)
Correct Answer
C
Correct Option:
18.2 ms (approximately)

About This Question

This is Neco 2021 Data Processing Question 12. It is one of the objective questions from the 2021 Neco Data Processing examination.

Difficulty level: Medium .

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