Top 20 Computer MCQs For OSSC LTR Teacher 28 October 2024

For candidates preparing for the OSSC LTR (Leave Training Reserve) Teacher Exam, mastering computer basics is crucial, as the exam includes a section dedicated to Computer/Internet Awareness with multiple-choice questions (MCQs). Here is a collection of the top 20 essential computer MCQs to help you get started:

Top 20 Computer MCQs For OSSC LTR Teacher

Q1. Who invented the computer mouse?
(a) Alan Turing
(b) Douglas Engelbart
(c) Charles Babbage
(d) Steve Jobs
Ans. (b) Douglas Engelbart
Explanation: Douglas Engelbart invented the computer mouse in 1964, marking a major step in human-computer interaction.

Q2. Who is credited with inventing the World Wide Web?
(a) Bill Gates
(b) Steve Jobs
(c) Tim Berners-Lee
(d) Marc Andreessen
Ans. (c) Tim Berners-Lee
Explanation: Tim Berners-Lee invented the World Wide Web in 1989 while working at CERN, creating a new way to access information over the internet.

Q3. Who developed the first graphical user interface (GUI) for computers?
(a) Xerox PARC
(b) IBM
(c) Microsoft
(d) Apple
Ans. (a) Xerox PARC
Explanation: The first GUI was developed at Xerox PARC, which inspired later versions on Apple and Microsoft platforms.

Q4. Who invented the first microprocessor?
(a) Federico Faggin, Ted Hoff, and Stanley Mazor
(b) Steve Wozniak
(c) Jack Kilby
(d) John Bardeen
Ans. (a) Federico Faggin, Ted Hoff, and Stanley Mazor
Explanation: They developed the Intel 4004 in 1971, the first commercially available microprocessor.

Q5. Who is the co-founder of Apple who also designed the Apple I and II?
(a) Steve Jobs
(b) Steve Wozniak
(c) Ronald Wayne
(d) Bill Gates
Ans. (b) Steve Wozniak
Explanation: Steve Wozniak designed the Apple I and Apple II, which were key to Apple’s early success.

Q6. Who invented the first electric programmable computer?
(a) Alan Turing
(b) Charles Babbage
(c) Konrad Zuse
(d) Thomas Watson
Ans. (c) Konrad Zuse
Explanation: Konrad Zuse built the Z3 in 1941, recognized as the first programmable computer.

Q7. Who is known for creating the Linux operating system?
(a) Richard Stallman
(b) Linus Torvalds
(c) Bill Gates
(d) Steve Jobs
Ans. (b) Linus Torvalds
Explanation: Linus Torvalds developed Linux in 1991, which has since grown into a widely used open-source operating system.

Q8. Who developed the theory of Boolean algebra essential for digital circuits?
(a) Alan Turing
(b) George Boole
(c) Claude Shannon
(d) John McCarthy
Ans. (b) George Boole
Explanation: George Boole created Boolean algebra, a mathematical framework for binary operations.

Q9. Who invented the concept of Artificial Intelligence?
(a) John McCarthy
(b) Marvin Minsky
(c) Alan Turing
(d) Claude Shannon
Ans. (a) John McCarthy
Explanation: John McCarthy coined the term “Artificial Intelligence” in 1955 and is considered one of its founding figures.

Q10. Who invented the first modern desktop computer (Programma 101)?
(a) Steve Jobs
(b) Pier Giorgio Perotto
(c) Alan Turing
(d) Charles Babbage
Ans. (b) Pier Giorgio Perotto
Explanation: Perotto’s Programma 101, created in the 1960s, is often considered the first personal computer.

Q11. Who created JavaScript?
(a) James Gosling
(b) Brendan Eich
(c) Tim Berners-Lee
(d) Marc Andreessen
Ans. (b) Brendan Eich
Explanation: Brendan Eich developed JavaScript in 1995 while working for Netscape, which became a foundational web technology.

Q12. Who is considered the “Father of Computer Science”?
(a) Charles Babbage
(b) Alan Turing
(c) John von Neumann
(d) Claude Shannon

Ans. (b) Alan Turing
Explanation: Alan Turing’s contributions, especially the Turing machine concept, laid the groundwork for modern computing.

Q13. Who invented Ethernet?
(a) Robert Metcalfe
(b) Steve Wozniak
(c) Tim Berners-Lee
(d) Dennis Ritchie
Ans. (a) Robert Metcalfe
Explanation: Robert Metcalfe co-invented Ethernet in the 1970s, which became a standard for networking technology.

Q14. Who is the creator of the C programming language?
(a) Dennis Ritchie
(b) Bjarne Stroustrup
(c) James Gosling
(d) Guido van Rossum
Ans. (a) Dennis Ritchie
Explanation: Dennis Ritchie developed C in the 1970s, influencing many later programming languages.

Q15. Who invented the compiler?
(a) Ada Lovelace
(b) Grace Hopper
(c) Margaret Hamilton
(d) John Backus
Ans. (b) Grace Hopper
Explanation: Grace Hopper developed the first compiler, a tool to translate human-readable code to machine code.

Q16. Who developed the World’s first web browser, WorldWideWeb?
(a) Marc Andreessen
(b) Tim Berners-Lee
(c) Larry Page
(d) Vint Cerf
Ans. (b) Tim Berners-Lee
Explanation: Tim Berners-Lee created the WorldWideWeb browser, later renamed Nexus, in 1990.

Q17. Who developed email in the early 1970s?
(a) Ray Tomlinson
(b) Vint Cerf
(c) Bob Kahn
(d) Larry Page
Ans. (a) Ray Tomlinson
Explanation: Ray Tomlinson created the first email system, using the “@” symbol to separate the username and destination.

Q18. Who invented the laser printer?
(a) Gary Starkweather
(b) Ray Tomlinson
(c) Alan Shugart
(d) James Gosling
Ans. (a) Gary Starkweather
Explanation: Starkweather developed the laser printer at Xerox in the 1970s, revolutionizing printing technology.

Q19. Who invented Bluetooth technology?
(a) Martin Cooper
(b) Jaap Haartsen
(c) Tim Berners-Lee
(d) Steve Wozniak
Ans. (b) Jaap Haartsen
Explanation: Jaap Haartsen developed Bluetooth while working for Ericsson in the 1990s to enable wireless communication.

Q20. Who created the first commercially successful spreadsheet program, VisiCalc?
(a) Dan Bricklin and Bob Frankston
(b) Larry Page and Sergey Brin
(c) Bill Gates and Paul Allen
(d) Steve Jobs and Steve Wozniak
Ans. (a) Dan Bricklin and Bob Frankston
Explanation: VisiCalc, created by Bricklin and Frankston, became the first widely adopted spreadsheet software, sparking the personal computer boom.