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20 Most Repeated Computer Fundamentals MCQs for NTS, CSS, PMS, KPPSC, PPSC, ETEA, SPSC, BPSC and FPSC Exams
Here are 20 most repeated Computer Fundamentals MCQs, complete with correct answers and explanations, formatted perfectly for inclusion in test preparation materials for competitive exams like NTS, CSS, PMS, PPSC, and FPSC.
Most Repeated Computer Fundamentals MCQs
1
Which of the following is considered the "brain" of a computer system?
Explanation
Correct Answer: Option C
The CPU is the primary component of a computer that acts as its "brain." It processes instructions, executes calculations, and manages the flow of information through a computer system.
2
Which of the following is an example of volatile memory?
Explanation
Correct Answer: Option C
RAM (Random Access Memory) is volatile, meaning it requires continuous power to retain its data. When the computer is turned off, all data stored in RAM is lost.
3
What does "GUI" stand for in computing?
Explanation
Correct Answer: Option B
A GUI allows users to interact with electronic devices through graphical icons and visual indicators, as opposed to text-based interfaces or typed command labels.
4
The smallest unit of data in a computer is a:
Explanation
Correct Answer: Option C
A bit (binary digit) is the most basic unit of information in computing and digital communications. It can have only one of two values: 0 or 1. (Note: 4 bits make a nibble, and 8 bits make a byte).
5
Which protocol is primarily used to browse the World Wide Web?
Explanation
Correct Answer: Option C
HTTP (Hypertext Transfer Protocol) is the foundation of data communication for the World Wide Web. It defines how messages are formatted and transmitted between web browsers and servers.
6
Who is widely recognized as the "Father of the Computer"?
Explanation
Correct Answer: Option B
Charles Babbage, an English polymath, originated the concept of a digital programmable computer and designed the Analytical Engine in the 1830s.
7
Which component is directly responsible for performing mathematical calculations and logical operations?
Explanation
Correct Answer: Option D
8
Software that acts as a bridge between the computer hardware and the user is called:
Explanation
Correct Answer: Option C
An Operating System (like Windows, Linux, or macOS) manages computer hardware, software resources, and provides common services for computer programs.
9
Cache memory is located between the:
Explanation
Correct Answer: Option A
Cache is an extremely fast memory type that acts as a buffer between RAM and the CPU. It holds frequently requested data and instructions so that they are immediately available to the CPU when needed.
10
What does the term "Phishing" refer to in computer security?
Explanation
Correct Answer: Option B
Phishing is a cyberattack that uses disguised email or messaging as a weapon to trick the recipient into revealing personal information like passwords or credit card numbers.
11
In MS Word, what is the shortcut key to "Undo" the last action?
Explanation
Correct Answer: Option B
Ctrl + Z is the universal keyboard shortcut in Windows environments to undo the previous action. Ctrl + Y is typically used to "Redo."
12
Which of the following is NOT an input device?
Explanation
Correct Answer: Option C
A projector is an output device that takes images generated by a computer and projects them onto a screen or surface. Scanners, microphones, and keyboards all send data *into* the computer.
13
The first general-purpose electronic digital computer was:
Explanation
Correct Answer: Option C
ENIAC (Electronic Numerical Integrator and Computer), completed in 1945, was the first programmable, electronic, general-purpose digital computer.
14
What does LAN stand for?
Explanation
Correct Answer: Option A
15
Which of the following extensions is typically used for a Microsoft Excel workbook?
Explanation
Correct Answer: Option D
16
IP Address stands for:
Explanation
Correct Answer: Option A
17
Which of the following is open-source software?
Explanation
Correct Answer: Option C
Linux is an open-source operating system, meaning its source code is freely available to the public to use, modify, and distribute. The others are proprietary, closed-source software.
18
Unsolicited commercial emails are commonly referred to as:
Explanation
Correct Answer: Option B
Spam refers to the use of electronic messaging systems to send unsolicited bulk messages, especially advertising, indiscriminately.
19
What is the primary function of a router in a network?
Explanation
Correct Answer: Option B
A router acts as a dispatcher, choosing the best path for data packets to travel across networks to reach their destination.
20
Who invented the World Wide Web (WWW)?
Explanation
Correct Answer: Option C
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