Technology and Inventions – GK Questions

Ans: D

Explanation: The ‘.JPG’ file extension is a widely recognized standard for digital image files, specifically for the JPEG (Joint Photographic Experts Group) compression format.
Correct_Option:D

Ans: A

Explanation:Subject directories are curated lists of websites organized by topic, often with human editors selecting and recommending sites based on quality and relevance. Search engines rely on algorithms to index and rank pages, while meta-search engines aggregate results from multiple search engines. Discussion groups are for conversations, not curated website lists.
Correct_Option:A

Ans: C

Explanation:AM is a common abbreviation for Amplitude Modulation, a technique used in electronic communication, most notably in radio broadcasting. The other options are either incorrect or not relevant to the typical context of current affairs for a banking exam.
Correct_Option:C

Ans: C

Explanation:LCP stands for Link Control Protocol. It is a network protocol used in establishing and managing Point-to-Point Protocol (PPP) connections. It handles the configuration of the PPP link, including authentication, compression, and error detection.
Correct_Option:C

Ans: A

Explanation:The ballpoint pen was invented by László Bíró, a Hungarian journalist, along with his brother György Bíró, a chemist. They patented their design in 1938. The brand “Biro” became synonymous with the ballpoint pen.
Correct_Option:A

Ans: B

Explanation:Ray Tomlinson is credited with sending the first email in 1971. He chose the “@” symbol to separate the user’s name from the host computer’s name, as it was a symbol not commonly used in names. The year 1972 is widely cited as the year this standard was adopted and began to be used in e-mail addresses.
Correct_Option:B

Ans: B

Explanation:ARPANET (Advanced Research Projects Agency Network) was an early packet-switching network and the first network to implement the TCP/IP protocol suite. Both technologies became the technical foundation of the Internet. It was funded and developed by the Advanced Research Projects Agency (ARPA) of the United States Department of Defense.
Correct_Option:B

Ans: A

Explanation:The first solid-state integrated circuit was demonstrated by Jack Kilby at Texas Instruments in 1958, which falls within the 1950s decade.
Correct_Option:A

Ans: A

Explanation:The “.txt” file extension is a standard convention for plain text files. These files contain only unformatted text characters and can be opened by virtually any text editor.
Correct_Option:A

Ans: B

Explanation:In the context of the internet and web crawling, a “spider” (also known as a crawler or bot) is a program or automated script that systematically browses the World Wide Web, typically for the purpose of web indexing. Search engines use spiders to gather information about web pages and their content, which they then use to create searchable indexes.
Correct_Option:B

Ans: A

Explanation: J. B. Dunlop, a Scottish veterinarian, is credited with inventing the first practical pneumatic rubber tire in 1888. He was looking for a smoother ride for his son’s tricycle.
Correct_Option:A

Ans: A

Explanation:The first message sent over ARPANET was on October 29, 1969, between UCLA and Stanford Research Institute. The intended message was “LOGIN,” but the system crashed after the first two letters were transmitted. Therefore, the actual first message received was “LO.”
Correct_Option:A

Ans: C

Explanation:The World Wide Web, Email, and HTTP (Hypertext Transfer Protocol) are all services and protocols that operate on the Internet. A CD-ROM (Compact Disc Read-Only Memory) is a physical storage medium and is not inherently part of the Internet.
Correct_Option:C

Ans: D

Explanation:Marie Curie, a Polish and naturalized-French physicist and chemist, discovered the radioactive element radium in 1898. She was the first woman to win a Nobel Prize, the first person and only woman to win the Nobel Prize twice, and the only person to win the Nobel Prize in two different scientific fields. Isaac Newton is known for his laws of motion and universal gravitation. Albert Einstein developed the theory of relativity. Benjamin Franklin is famous for his experiments with electricity and his contributions to public service.
Correct_Option:D

Ans: A

Explanation:The NTSC (National Television Standards Committee) was a standard for analog television in North America, parts of South America, and some East Asian countries including Japan. While other countries used different standards like SECAM (France, Russia) and PAL (most of Europe, Australia), Japan adopted NTSC.
Correct_Option:A

Ans: C

Explanation: URL stands for Uniform Resource Locator. It is a web address used to locate resources on the internet.
Correct_Option:C

Ans: A

Explanation:The first patent for barbed wire was granted to Joseph F. Glidden in 1874. This invention revolutionized agriculture by making it easier and more cost-effective to fence livestock.
Correct_Option:A

Ans: A

Explanation:FET stands for Field-Effect Transistor. It is a semiconductor device that uses an electric field to control the flow of current.
Correct_Option:A

Ans: A

Explanation:The country code for Mongolia, as per ISO 3166-1 alpha-2 standard, is MN. This is commonly used for website domain names.
Correct_Option:A

Ans: A

Explanation:The Richter magnitude scale, which measures the magnitude of earthquakes, was invented by Charles F. Richter, a CalTech seismologist.
Correct_Option:A