Computer Science/IT MCQs
Topic Notes: Computer Science/IT
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
471
Which visionary in the 1960s first introduced the concept of 'hypertext,' a system for non-linear, interconnected information that laid a foundational idea for the World Wide Web?
Answer:
Ted Nelson, who coined the terms 'hypertext' and 'hypermedia' and envisioned Project Xanadu.
Ted Nelson is credited with coining the terms 'hypertext' and 'hypermedia' in 1963. He envisioned 'Project Xanadu,' a global information system where all documented information would be interconnected, allowing users to navigate through various documents non-sequentially. While Tim Berners-Lee developed the World Wide Web as we know it, and Douglas Engelbart made significant contributions to human-computer interaction, Nelson's conceptual work on hypertext provided a crucial theoretical underpinning that predated and influenced the development of the web. Vint Cerf's contributions were primarily in networking protocols, not the foundational concept of hypertext itself.
472
What was the first commercially successful high-level programming language, designed for scientific and engineering tasks?
Answer:
FORTRAN
FORTRAN (Formula Translation), developed in the 1950s by a team at IBM led by John Backus, was the first widely used high-level language and was optimized for numerical and scientific computations.
473
Which date marks the official public release of the Windows 10 operating system?
Answer:
July 29, 2015
Microsoft officially launched Windows 10 to the public on July 29, 2015. This release was a significant event for the company, as Windows 10 was designed to be a 'Software as a Service' (SaaS) model, receiving continuous updates rather than periodic major version releases. Key features introduced with Windows 10 included the return of the Start Menu (after its removal in Windows 8), the integration of the Cortana voice assistant, the Microsoft Edge web browser, and a focus on a unified user experience across various device types, from PCs to tablets and smartphones. Option A (July 29, 2014) is incorrect; while development was underway, the public release was later. Option B (October 26, 2012) refers to the release date of Windows 8. Option D (November 10, 2016) is too late and doesn't correspond to the initial public launch.
474
The Atanasoff-Berry Computer (ABC) is considered by some to be the first electronic digital computing device, created by:
Answer:
John Atanasoff and Clifford Berry
Built between 1937 and 1942 at Iowa State College, the ABC was designed to solve systems of linear equations. A 1973 court ruling declared it the first electronic digital computer, invalidating the patent for the ENIAC.
475
Who is recognized as the father of the Internet?
Answer:
Douglas Engelbart
Vint Cerf is known for his pioneering work on TCP/IP protocols fundamental to Internet development. [cite: 187]
476
The key technological advantage of the integrated circuit was its ability to:
Answer:
Miniaturize many electronic components into a single chip.
The invention of the integrated circuit was a breakthrough in miniaturization. It allowed for the fabrication of numerous components (like transistors and resistors) on a single piece of semiconductor material, drastically reducing size and cost.
477
The co-founders of Microsoft, who famously licensed their MS-DOS operating system to IBM, were:
Answer:
Bill Gates and Paul Allen
In 1980, IBM approached Microsoft to provide an operating system for its upcoming Personal Computer. Bill Gates and Paul Allen's company acquired and adapted an existing OS, which became MS-DOS, a key factor in Microsoft's early success.
478
Which computer scientist is credited with inventing the C++ programming language by enhancing C with object-oriented capabilities?
Answer:
Bjarne Stroustrup
Bjarne Stroustrup is widely recognized as the creator of the C++ programming language. Starting in 1979 at Bell Labs, he developed a new language initially called 'C with Classes,' which was designed to combine the efficiency and low-level control of C with object-oriented programming paradigms inspired by Simula. This new language, later renamed C++, fundamentally influenced software development by introducing features such as classes, inheritance, virtual functions, and operator overloading, enabling more modular and extensible codebases. Dennis Ritchie is known for creating the C programming language, Ken Thompson for co-developing Unix and UTF-8, and Guido van Rossum for creating Python.
479
The seminal 1968 'Mother of All Demos' by Douglas Engelbart famously introduced several pioneering computing concepts. Among these innovations, which pair of technologies made their public debut during this groundbreaking presentation?
Answer:
The computer mouse and real-time video conferencing.
Douglas Engelbart's 1968 'Mother of All Demos' was a visionary presentation of the oN-Line System (NLS). It was a live demonstration that showcased numerous concepts that are now fundamental to modern computing. Among the most iconic introductions were the computer mouse, which allowed for intuitive graphical interface interaction, and real-time video conferencing, enabling collaborative work between geographically separated individuals. The demonstration also featured hypertext, object addressing, dynamic file linking, and word processing, all revolutionary for their time. Options B, C, and D represent other significant technological advancements, but they were either developed independently or introduced publicly at different times than Engelbart's 1968 demo.
480
Which pioneering programming language, created in the mid-1950s under John Backus's leadership at IBM, was specifically engineered to address complex mathematical and scientific computing challenges?
Answer:
FORTRAN (Formula Translation)
FORTRAN, an acronym for FORmula TRANslation, was indeed the programming language developed in the mid-1950s by a team led by John Backus at IBM. Its primary design goal was to efficiently execute scientific, mathematical, and engineering computations, making it the first widely successful high-level programming language for such applications.
COBOL (option A) was developed concurrently but focused on business data processing. LISP (option B) emerged slightly later and was designed for artificial intelligence and symbolic computation. ALGOL (option D) was developed as a universal algorithmic language but gained less commercial traction than FORTRAN in the scientific domain, especially in the US.