Class-IX-Solved Exercise:
Chapter-3 Basic Computer Operations
Chapter-4 Internet and its Applications
1. ___________ control and coordinates the internal working of the computer.
Answer: Operating system
2. The core of Linux is the _____________________.
Answer: Linux Kernel
3. __________ is the main screen from where a user starts to work on the computer.
Answer: Desktop
4. The small pictures present on the desktop background are called___________.
Answer: Desktop icons
5. A _________ helps to store and organize files in a computer.
Answer: Folder
6. _______ is the largest network of computers in the world.
Answer: Internet
7. ________ is a very popular social networking site.
Answer: Facebook
8. ________ is a system of sending and receiving digital message through computers.
Answer: E-mail
9. _________ is a very popular video sharing site.
Answer: YouTube
10. _______ is an instant messaging app designed to run on smartphones.
Answer: Whats'App
B. Write T for true and F for false against the following statements.
1. Operating systems are not a part of personal computers. F
2. MS Windows is a popular GUI based operating system. T
3. Linux is an open source operating system. T
4. A mouse helps users to perform operations on the desktop icons. T
5. You cannot move a file into a folder by using the mouse. F
6. WWW stands for the World Wide Web. T
7. Google chrome is a popular web browser. T
8. WhatsApp is an instant messaging mobile application. T
9. Facebook is a social networking site. T
10. You tube does not allow you to share videos. F
C. Multiple choice questions. Tick the correct answer.
1. Which of the following is not an operating system?
a. MS Windows b. MS Word c. Linux d. Ubuntu
Answer: MS Word
2. Which of the following is an open source OS?
a. MS Windows b. Mac OS c. Linux d. none of the above
Answer: Linux
3. Which of these is a CUI based operating system?
a. Windows b. DOS c. Mac Os d. Ubuntu
Answer: DOS
4. Which of these is a web browser?
a. Google chrome b. internet explorer c. Mozilla firefox d. all of the above
Answer: All of the above
5. The collection of web pages under one domain is called:
a. WWW b. Website c. URL d. Facebook
Answer: Website
6. Which of these helps you to chat with your friends?
a. Facebook b. WhatsApp c. Google+ d. All are correct
Answer: All are correct
7. Which of these is a popular video sharing site?
a. Twitter b. Facebook c. Youtube d. Instagram
Answer: YouTube
8. Email stands for:
a. Easy mail b. East mail c. Electrical mail d. Electronic mail
Answer: Electronic mail
9. Which of these allows you to create an e-mail account?
a. Gmail b. Yahoo mail c. Hot mail d. All are correct
Answer: All are correct
10. The Digital India campaign was launched on:
a. 1 july 2015 b. 1 july 2016 c. 1 july 2017 d. 1 july 2018
Answer: 1 July 2015
D. Short Answer Questions.
1. What do you mean by an operating system?
Answer: An Operating System abbreviated as "OS", is a system software that helps us to operate a computer system. It is the most important software that runs on a computer. Examples: MS-DOS, MS-Windows, Mac OS, Linux and Unix.
2. Give any two examples of GUI based operating system.
Answer: GUI based Operating systems: Windows 95,Windows 98,Windows 2000,Windows XP,Windows Vista, Windows 7, Windows 8.1 and Windows 10.
3. How can you select icons on the desktop screen?
Answer: Single click or left click means to bring the mouse pointer over an icon and press the left mouse button once. This action is used to select icons and commands displayed in the menus.
4. What is a file?
Answer: A file is a collection of information. Any type of data or information is stored in a computer in the form of a file. Each file is given a filename and has a filename extension that identifies the file type.
5. What is the use of folders?
Answer: A Folder is a container you can use to store or organize files in a computer. If you have a large number of files of different types on your computer, it would be nearly impossible to find any particular file when you need it.
6. What is the Internet?
Answer: Internet is the world's largest network of computers that connects million of computers and mobile devices together across the world through various wired and wireless connections and telecommunications channels. It allows billions of computers and their users to communicate with each other and exchange information using a set of communication protocols and standards.
7. What do you mean by social media?
Answer: Social media is an internet based technology that allows people to share ideas, information and other content such as photos, videos, etc. to build the virtual networks and online communities. Users engage with social media via computers, tablets or smartphones via web-based software or web applications.
8. What is the use of the WhatsApp mobile app?
Answer: Whats'App is a very popular instant messaging application designed to be used on mobile devices such as smartphones and tablets. This application allows its users to send and receive instant text messages, share photos, images, audios, videos, text documents, pdfs and location between two mobile devices anywhere across the world.
9. What is Facebook used for?
Answer: Facebook is the world's leading social networking site with more than 2 billion active users all over the world. It was founded in 2004 by Mark Zuckerberg, along with fellow Harvard College students and roommates Eduardo Saverin, Andrew McCollum etc.
Facebook allows its registered users to create profiles, upload and share photos and videos, communicate through chat, voice call or video call.
10. What is an E-mail?
Answer: Electronic mail or E-mail is a system of creating, sending and storing textual messages in a digital form over the internet. To use an E-mail service, one needs to have an email account with any free mail service like Gmail, Yahoo mail, Hotmail, etc.
11. What is Digital India?
Answer: Digital India is a campaign launched by the Indian Government on 1st July 2015. The objectives of the campaign are to provide the Government services to the citizens electronically by improved online infrastructure and by increasing internet connectivity or by making the country digitally empowered in the field of technology.
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