Computer and Information Technology (Physics) Part-II

Total Questions: 50

11. Which type of computer could be found in a digital watch? [M.P.P.C.S. (Pre) 2013]

Correct Answer: (d) Embedded computer
Solution:

An embedded system is a computer system with a dedicated function within a larger mechanical or electrical system often with real-time computing constraints.

It is embedded as part of a complete device often including hardware and mechanical parts. Embedded systems control many devices in common use today.

Embedded systems range from portable devices such as digital watches and MP3 players to large stationary installations like traffic lights, factory controllers and largely complex systems like hybrid vehicles, MRI, and avionics.

12. Which of the following laser ray is used in laser printers? [I.A.S. (Pre) 2008, U.P.P.C.S. (Pre) 2009]

Correct Answer: (b) Semiconductor laser
Solution:

Semiconductor laser are solid lasers which are used in laser printers and CD/DVD. It works as a light emitting device. An Excimer laser of Exciplex laser is a form of an ultraviolet laser which is commonly used in the production of microelectronic devices and eye surgery.

A gas laser is mainly used to make hologram and also used to read the barcode printed on the various products. The dye laser is mainly used in astronomy and spectroscopy.

13. Which printer is usually used for desktop printing? [Uttarakhand P.C.S. (Mains) 2002]

Correct Answer: (c) Laser printer
Solution:

Desktop publishing or DTP is a modern technique of publishing. It is a wider range of low cost, easy to use software that doesn't require traditional design and pre-press skill to understand and use. Laser printer is usually used for desktop printing.

14. Daisy wheel printer is a type of- [U.P. Lower Sub. (Mains) 2013]

Correct Answer: (d) Impact Printer
Solution:

A daisy wheel printer is an early type of impact printer invented in 1969 by David S. Lee at Diablo Data Systems. Impact printers rely on a forcible impact to transfer ink to the media. Dot matrix printers are also categorized as an impact printer.

15. www on the Internet stands for - [Uttarakhand P.C.S. (Pre) 2005]

Correct Answer: (c) World Wide Web
Solution:

www stands for World Wide Web. The inventor of this system was Tim Berners Lee.

16. The full form of www is- [Uttarakhand Lower Sub. (Pre) 2010, U.P.P.C.S. (Mains) 2010, U.P.P.C.S. (Pre) 2015]

Correct Answer: (c) World Wide Web
Solution:

www stands for World Wide Web. The inventor of this system was Tim Berners Lee.

17. Who, among the following is considered as the inventor of the World Wide Web (www)? [I.A.S. (Pre) 2007, U.P.P.C.S (Pre) 2011, M.P.P.C.S. (Pre) 2013]

Correct Answer: (c) Tim Berners-Lee
Solution:

www stands for World Wide Web. The inventor of this system was Tim Berners Lee.

18. Who is the inventor of www? [M.P.P.C.S. (Pre) 2017]

Correct Answer: (b) Tim Berners-Lee
Solution:

www stands for World Wide Web. The inventor of this system was Tim Berners Lee.

19. World Wide Web (www) is a hypermedia system because [Uttrakhand U.D.A./LDA (mains) 2006]

Correct Answer: (b) It links to other computer resources
Solution:

The World Wide Web is an information system of interlinked hypertext documents and other resources that are accessed via internet.

With the help of the web browser, we can visit web pages which contain text, images, video and other multimedia items. Embedded hyperlink permit users to navigate between pages.

20. The collection of linked information residing on computers which is available through internet is called [M.P.P.C.S. (Pre) 2018]

Correct Answer: (c) World Wide Web
Solution:

The World Wide Web is an information system of interlinked hypertext documents and other resources that are accessed via internet.

With the help of the web browser, we can visit web pages which contain text, images, video and other multimedia items. Embedded hyperlink permit users to navigate between pages.