Computer Studies 2025 Jamb Examination
Computer Studies 2025 Jamb Examination
Question 41
What is the main purpose of device drivers?
A device driver is a specific type of software that allows the operating system to communicate with and manage hardware devices (like printers, graphics cards, or mice). It acts as a translator between the OS and the physical hardware component.
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Question 42
What distinguishes open-source software from proprietary software?
The defining feature of open-source software is that its source code is available to the public. Users are legally permitted to modify and redistribute the code. Proprietary software (like Windows or Microsoft Office) is owned by a company that keeps the code secret and restricts how it can be used or shared.
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Question 43
Which of the following data types is used to represent textual data in computers?
In programming, a String is a data type used to represent textual data (a sequence of characters). Integers represent whole numbers, Floats represent decimal numbers, and Booleans represent true/false values.
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Question 44
What is the function of the motherboard in a computer system?
The motherboard is the main printed circuit board (PCB) of a computer. Its primary function is to connect all hardware components—such as the CPU, RAM, and hard drive—allowing them to communicate with each other. It serves as the 'backbone' of the system.
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Question 45
What does SSD stand for, and what is its primary advantage?
SSD stands for Solid State Drive. Its primary advantage over traditional Hard Disk Drives (HDDs) is faster speed. Because SSDs use flash memory instead of spinning magnetic platters, they can read and write data much more quickly and are more resistant to physical shock.
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Question 46
Which statement is used to skip the execution of the current iteration and start the next iteration in a loop?
The Continue statement is used in programming (like in C++, Java, or Python) to stop the current loop cycle early and immediately jump to the start of the next iteration. It differs from the break statement, which exits the loop entirely.
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Question 47
What is the key innovation of the Analytical Engine?
Charles Babbage's Analytical Engine was a mechanical general-purpose computer. Its most revolutionary innovation was being programmable via punch cards (an idea borrowed from the Jacquard loom). This allowed for the input of both data and a sequence of instructions, laying the groundwork for modern computing.
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Question 48
What is the benefit of using a bulleted or numbered list in your document?
Bulleted and numbered lists are formatting tools used to improve readability. By breaking up dense blocks of text into distinct, visually separated points, they help the reader identify important points and follow sequences or lists more easily.
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Question 49
What are some common criteria used to classify computer files?
Computer files are primarily classified by their File type (usually indicated by the extension like .docx, .jpg, or .exe) and their content (such as document, image, audio, or system files). This helps the operating system know which application to use to open the file.
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Question 50
What is the advantage of using cell references in formulas compared to entering constant values?
Cell references (like A1, B2) allow formulas to be dynamic. If you change the value in an input cell, the formula automatically recalculates the result. This greatly improves accuracy because you don't have to manually update every formula when your data changes.
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