Neco 2021 Computer Studies Question 5

Practice essay / theory question 5 from the 2021 Neco Computer Studies examination. This question covers Data Representation, Storage Devices, Database Capacity, Backup Strategies .

Neco 2021 Computer Studies Essay / Theory
Topics: Data Representation Storage Devices Database Capacity Backup Strategies
Question 5 NECO • 2021 • COMPUTER_STUDIES • essay

A small retail business is planning to install a computer system to manage its inventory. Each product record will contain the product code, description, quantity in stock and unit price. The business expects to handle up to 150,000 product records. The management wants the system to run quickly, store data safely and be able to back‑up the data weekly. The following storage options are available: - Option A: 256 GB solid‑state drive (SSD) at ₦45,000 - Option B: 500 GB hard‑disk drive (HDD) at ₦30,000 - Option C: 1 TB external USB‑3.0 hard‑disk drive at ₦55,000 (used for backups only)

Question Parts

( a )
Explain the difference between primary and secondary storage. Give two examples of each and discuss why an SSD is generally preferred over an HDD for installing the operating system.
( b )
Calculate the minimum storage capacity, in megabytes, required to store the 150,000 product records if each record occupies 120 bytes. From the options given, recommend the most suitable storage device for the operating system and justify your choice.
( c )
The business will back up the entire database weekly onto the external USB‑3.0 drive (Option C). If each backup file can be compressed to 60 % of its original size, determine the total storage space required on the external drive to keep four weeks of backups before overwriting. State a suitable backup schedule based on your calculation.

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About This Question

This is Neco 2021 Computer Studies Question 5. It is one of the essay questions from the 2021 Neco Computer Studies examination.

The question covers Data Representation, Storage Devices, Database Capacity, Backup Strategies .

View More Neco 2021 Computer Studies Questions More Neco Practice Questions Back to Questions

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