Most Important Computer Questions
1. In computer, logical operations are performed by?
Ans: ALU
✅ Central Processing Unit (CPU) (Brain of the Computer) is divided into three parts. ALU, Memory Unit(stores data & instructions) & Control Unit.
As suggested by its name, ALU performs all arithmetic operations and also logical operations.CU (Control Unit): controls and coordinates, the processing of data inside the computer. Nerve centre of a computer. It takes care of step by step processing of all operations inside the computer.
2. What transforms the input data into the required data?
Ans: CPU
3. The temporary Storage Area in CPU is called?
Ans: Registers
4 . ....... is a volatile memory?
a) SRAM b) DRAM c) Both (a) & (b)
Ans: c) Both SRAM & DRAM
✅ RAM ( Random Access Memory) - volatile memory
ROM ( Read Only Memory) - non volatile memory
5. The memory unit which communicates directly with CPU is? Ans: Primary Memory (RAM)
✅ Secondary memory stores data permanently.
6. Expand GUI?
Ans: Graphical User Interface.
✅ Important abbreviations:
ASCII - American Standard Code for Information Interchange
BIOS - Basic Input Output System
FAT - File Allocation Table
DNS - Domain Name System.
DOS - Disk Operating System
GIF - Graphics Interchange Format
7. IC chips are used in which generation computers?
Ans: 3rd Generation
✅ First Gen - Vacuum Tubes
2nd Gen - Transistors
3rd Gen - IC Chips
4th Gen - VLSI Micro Processors(Very Large Scale Integration)
5th Gen - ULSI Micro Processors (Ultra Large Scale Integration.)
Fifth generation computers are in developmental stage, based on the artificial intelligence. They can respond to natural language & recognize image & graph.
8. Microsoft PowerPoint is an example of _______?
Ans: Application software.
Eg: Microsoft Word, Microsoft Excel, Microsoft PowerPoint are application softwares.
9. Website is a collection of?
a) Web page b) HTML page c) Both (a) & (b) d) HTTP page
Ans: c) Both (a) & (b).
(A web page can either be a single HTML file or a group of HTML Files.)
HTML (Hypertext Markup Language) is the code that is used to structure a web page and its content. Web pages are written in HTML (hypertext markup language) ( so the name) and are translated by our Web browser.
A set of web pages is called a website. The main page on the first page is the homepage.
10. Which software do we use to access the website?
Ans: Web Browser.
✅ So Web Browser acts as an interface between user and internet.
11. The link used to connect web pages is called as?
Ans: Hyperlink
12. BING is a ............?
a) Website b) Business Software
c) Search Engine d)Social Media
Ans: Search Engine.
Search Engines are software programs that search for websites on www, based on our keywords.
The main search engines currently in use are Google, Bing, and Yahoo.
Google Search Engine is the best search engine in the world(73%).
Bing (7%) is Microsoft’s answer to Google and it was launched in 2009. Bing is the default search engine in Microsoft’s web browser.
Yahoo the most popular email provider also.
Baidu is the most used search engine in China.
Other search engines are, Ask.com, AOL.com,DucDuckGo, Web Crawler, Wow, MSN, Yippy.
13. Which is the first search engine in internet?.
Ans: Archie.
🌐 First search engine in India - Guruji
14. Moving from one Webpage to another Webpage is known as?
a) Attaching b) Changing
c) Downloading d) Browsing
Ans: Browsing.
✅ Browsing or Surfing is moving from one webpage to another.
15. Which is the first web browser in the world?
Ans: Nexus.
And the first Web Browser developed in India - Epic.
Important web browsers:
Internet Explorer (Microsoft), Edge( released in 2015 as default web browser for Windows 10).
Google Chrome - a cross platform web browser.
Mozilla Firefox - free and open source web browser.
Safari web browser of Apple.
Mosaic - Marc Andreessen, the first popular Web browser.
16. The brain of a computer system is?
a) ALU b) CPU c) Peripheral Devices
d) Control Unit
Ans: CPU
17. An input device that interprets pencil/pen marks on paper media is
a) Optical Mark Reader b) Punch Card Reader c) Optical Scanners d) Plotters
Ans: Optical Mark Reader.
The plotter is a computer printer used to produce hard copies of large graphs and designs on paper, such as construction maps, engineering drawings, etc.
18. The term phishing means?
a) An attempt for unauthorised access to a users system by pretending to be the user
b) An attempt to obtain sensitive information from the computer system
c) The process of sending same message to large number of internet users
Ans: b) An attempt to obtain sensitive information from the computer system.
Phishing is the cyber crime to obtain sensitive information such as usernames, passwords and credit card details by disguising as a trustworthy authority in an electronic communication.
✅ Hacking: Hacking is the unauthorised accessing of our computer system.
✅ Cyber Squatting: the practice of registering Internet domains in the names, especially well-known company or brand names, in the hope of reselling them at a profit.
✅ Cyber Vandalism : is damaging or destroying information or data, purely for their own enjoyment and pleasure.
✅ Cyberstalking : is stalking or harassing an individual, group, or organization, using the Internet or other electronic devices.
✅ Data Diddling: is unauthorized altering of data before or during entry into a computer system, most often by a data entry clerk or a computer virus.
✅ Internet Plagiarism: is copying someone else’s work or ideas and presenting them as our own, with or without their consent, by incorporating it into our work without full acknowledgement.
✅ Cyber Pornography: is the portrayal of sexual pictures or videos through electronic devices or internet.
19. url stands for?
Ans: Uniform Resource Locator.
✅ A Uniform Resource Locator is termed a web address. One example of a URL is https://www.keralapscwinner.co.in
20. Which of the following programming language is classified as low level language
a) COBOL b) FORTRAN
c) JAVA d) MASM
Ans: MASM
✅ The Microsoft Macro Assembler (MASM) is an assembler.
Low level languages are of two types Machine Language & Assembly Language.✅ Machine Language = Binary Language, the low level language understood by computer, contains two digits, 0 & 1.
✅ Assembly Language : is a low level language used to Interface with computer hardware. As this language uses symbols instead of numbers it is known as Mnemonics Code.
Machine language consists only of numbers, whereas, assembly language consists only of symbols.✅ High level language: is the language using which a programmer writes programs. High level language is also called source code. Such languages are considered high-level because they are closer to human languages.
Examples of high level languages: Java, C, C++, B, FORTRAN, COBOL, BASIC (Beginner's All-purpose Symbolic Instruction Code), Pascal
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