Modern Tech — Set 2
Inventions · आधुनिक तकनीक · Questions 11–20 of 60
Which technology, invented by Jaap Haartsen in 1994, allows for short-range wireless communication?
Correct Answer: D. Bluetooth
Bluetooth was named after a 10th-century Viking king who united Denmark and Norway. It uses radio waves to connect devices like headsets and phones without cables. It is now a standard feature in nearly all modern electronics.
Who co-founded Microsoft alongside Bill Gates in 1975?
Correct Answer: B. Paul Allen
Paul Allen and Bill Gates started Microsoft to develop software for early personal computers. Allen is credited with coming up with the name 'Micro-Soft'. Their OS, Windows, eventually became the dominant platform for PCs.
What was the name of the first search engine created in 1990?
Correct Answer: D. Archie
Archie was developed by Alan Emtage to index FTP archives. It allowed users to search for specific files across the nascent internet. It preceded modern web-based search engines by several years.
Which invention by Douglas Engelbart in 1964 revolutionized how users interact with computers?
Correct Answer: B. Computer Mouse
Douglas Engelbart demonstrated the first computer mouse made of a wooden shell with two metal wheels. He also pioneered the concept of the graphical user interface. This device made navigating computer screens intuitive for non-technical users.
Who is known for developing the 'Difference Engine' and the 'Analytical Engine'?
Correct Answer: C. Charles Babbage
Charles Babbage spent his life trying to build mechanical machines to compute mathematical tables. Though he never finished them, his designs are the foundation of computer science. He is widely honored as the first computer pioneer.
Which year marked the launch of the first iPhone, changing the smartphone industry?
Correct Answer: B. 2007
Apple released the first iPhone in 2007, combining a phone, an iPod, and an internet communicator. It popularized the use of multi-touch screens and mobile applications. This launch initiated the global shift toward mobile-first technology.
Who created the first computer virus in 1971, known as 'Creeper'?
Correct Answer: C. Bob Thomas
Bob Thomas wrote Creeper as an experimental program that moved between computers on the ARPANET. It displayed the message 'I'm the creeper, catch me if you can!'. This led to the creation of 'Reaper', the first antivirus software.
Which company introduced the first mass-produced personal computer, the Model 5150?
Correct Answer: C. IBM
The IBM PC was released in 1981 and set the standard for the architecture of personal computers. It used an Intel processor and the Microsoft DOS operating system. Its success legitimized the personal computer for business and home use.
Who developed the first high-level programming language, Fortran, in 1957?
Correct Answer: D. John Backus
John Backus led the team at IBM that created Fortran for scientific and engineering calculations. It stands for Formula Translation and made programming much easier than using assembly language. It is still used today in high-performance computing.
Which technology uses a chain of blocks to store data in a decentralized manner?
Correct Answer: C. Blockchain
Blockchain provides a transparent and immutable record of transactions. It was first implemented in 2009 as the underlying technology for Bitcoin. This innovation has applications in finance, supply chain, and voting systems.