Very Short Answer Class 9

SET -1

1. Define Open Source Software.

Ans. 

Open-source software is a type of computer software in which source code is released under a license in which the copyright holder grants users the rights to use, study, change, and distribute the software to anyone and for any purpose

2.Define web browser with an example?

Ans.

A web browser is application software for accessing the World Wide Web. Example. Google Chrome

3. Mention any two singular tags.

Ans. <hr>, <br>

4. Write the syntax of MID$ function?

Ans.

MID$(N$, I, X)

where N$ is a particular string, I is the start value of loop and X is the number of characters to extract.

5. Name any two loops used in QBASIC.

Ans. FOR...NEXT loop, While... Wend loop

6.Write the functions of Marquee tools in Photoshop.

Ans. Marquee tool enables the selection of particular portion of image.

7.Write any two rules while writing numeric constants.

Ans.

i. Number with comma is not allowed.

ii. Special character is not allowed.

8. Define symbolic constant.

Ans. Symbolic constant is a variable name that represents one and only value.

9.What is string concatenations?

Ans. The technique of merging two different string to one string is called string concatenations.

10.What is arithmetic expression?

Ans. The expression responsible for normal mathematical calculations is called arithmetic expression.

11.Write the functions of Text tool in Photoshop.

Ans. Text tool allows to write the text in image.

12.Write any two rules while writing variable name.

Ans.

i. Variable name length must be between 1 to 40 characters.

ii. It should start with alphabet.

13.Define numeric constant.

Ans. The numeric value that remains unchanged throughout a program is called numeric constant.

14. What do you mean by palindrome string?

Ans. The string whose result is same either read from front to back or back to front is called palindrome string.

15. What is logical expression?

Ans. The expression that deals with the logic of Boolean ie, true or false is called logic expression. 

16.Define Operating System.

Ans. The operating system is a system software that provides an interface for user to interact with system and is responsible for overall functionality of a computer system.

17. List any two examples of secondary storage media.

Ans.

i. Pendrive

ii.HDD

18. When and who developed HTML?

Ans. Tim Berners Lee developed HTML in 1990.

19. Mention any two singular tags.

Ans. <hr>, <br>

20. Define variables?

Ans. Variable refers to the identifier whose value can be changed by the user whenever needed by the user.

21.List any two symbols of flowchart with appropriate meaning.

Ans.

22. State different units of storage in computer.

Ans.

bit, Nibble, Bytes, Kilobyte, Megabyte etc.

23.Define the term “GIGO”.

Ans. The concept in computer based on the fact that useless input produces useless output is known as GIGO.

24. What do you mean by HTML?

Ans. The HyperText Markup Language, or HTML is the standard markup language for documents designed to be displayed in a web browser.

25. What is Internet of Things?

Ans. he Internet of things describes the network of physical objects that are embedded with sensors, software, and other technologies for the purpose of connecting and exchanging data with other devices and systems over the Internet

26. Give any two examples of markup languages.

Ans.

i. XML

ii. HTML

27. What is the difference between SRAM and DRAM?

Ans.

SRAM does not need to be refreshed periodically whereas DRAM needs to be refreshed periodically.

28. Mention the types of lists in HTML.

Ans.

i. Ordered list 

ii. Unordered list

29. Write one feature of QBASIC.

Ans.

QBAISC is a high level programming language. 

SET -2 

1. What is computer ?

Ans. 

Computer is an electronic device that takes in input from the user, processes it, stores it if necessary and gives a meaningful output.

2. List any two applications of computer.

Ans.

i. Education

ii. Communication 

3. Mention any two limitations of computer.

Ans.

i. It cannot make its own decision. 

ii. It cannot work without human’s instructions .

4. Define input device with examples.

Ans. The device that helps users to give input to the computer in many ways is called input device. Eg. Keyboard, Mouse etc.

5. Define output device with examples.

Ans. The device that yields the output after data being processed is called output devices. Eg. Monitor, Printer etc.

6. Define analog, digital and hybrid computer with examples.

Ans.

Analog computer is the type of computer that works on the basis of signal and used to measure the physical quantity. Eg. Speedometer 

Digital computer is the type of computer that is based on binary digits (  0 and 1) Eg. Laptop, Mobile phone etc.

Hybrid computer is the type of computer that has both the features of digital computer and analog computer. Eg  ECG

7. Differentiate between RAM and ROM.

Ans. 

i. RAM is volatile in nature and ROM is non- volatile in nature.

ii. RAM is expensive and ROM is cheaper comparatively.

8. List out the types of RAM.

Ans.

i. Static RAM  (SRAM)

ii. Dynamic RAM (DRAM)

9. List out the types of ROM.

Ans.

i. PROM

ii. EPROM

iii. EEPROM

10. What are the features of computer. List any two of them.

Ans.

i. Versatility 

ii. Diligence 

11. Define the term versatility.

Ans. The feature of computer that enables computer to perform varieties of task at a time is called versatility. 

12. Define the term Diligence.

Ans.

Computer doesn’t get tired of doing the same work repeatedly for long time, this feature is called diligence. 

13. List one one example of hardcopy output device and softcopy output device.

Ans.

Hardcopy : Printer

Softcopy: Monitor

14.Define HTTP.

Ans. HTTP is the set of rules established during sharing the HTML contents from on device to another via web.

14. Write the basic structure of HTML.

Ans.

 <html>

<head>

<title> …..  </title>

<body>

……….

……….

</body>

</html>

15. Define website and webpage.

Ans.

The formatted HTML content that may include text, audio, video, images and other media is called webpage.

The collection several related webpages is called website.

16. Define URL.

Ans. URL refers to the path that provides  that locates the address of particular web content.

17. Differentiate between singular and container tag.

Ans.

i. Singular tag contains only opening tag whereas container tag contains opening as well as closing tag.

ii. Eg. Of singular tag are <hr> , <br>etc. whereas eg of container tag are <html>….. </html ,   <body>….. </body>

18. Define search engine.

Ans. 

Search engine is a web application that allows the user to search and access the desired web content on the basis of keyword. Eg. Google

19. Define web browser.

Ans. 

Web browser is a software that helps to browse  and display the web content requested by the user and provided by the server. Eg. Google Chrome, Mozilla Firefox etc.

20. Name the company that developed QBASIC.

Ans.

Microsoft