Tuesday, February 18, 2025

Class IX Lesson 11 (Internet ) English Medium

LONG ANSWER TYPE QUESTIONS

 1. What is Internet? What are its main uses?

Ans: The Internet is a global network that connects millions of computers worldwide. It allows people to share information, communicate, and access various services. The Internet uses different technologies like fiber optics, satellites, and wireless connections to function.

Main Uses of the Internet:

  • Communication: Emails, video calls, and social media help people stay connected.
  • Information: Users can read news, research topics, and take online courses.
  • Entertainment: Watching movies, listening to music, and playing online games.
  • Shopping & Banking: People can buy products and transfer money online.
  • Work & Business: Online meetings, digital marketing, and remote work.

The Internet has made life easier, but it also has risks like cybercrime and privacy issues.


2. What is WWW? What is a web server? Explain.

Ans: WWW (World Wide Web) is a collection of web pages and websites that people can access using the Internet. It uses web browsers like Chrome, Firefox, and Edge to display websites. Websites use HTTP (Hypertext Transfer Protocol) to share information.

A web server is a powerful computer that stores website data and delivers it to users when they request a webpage. When you type a website address, the web server finds the page and sends it to your browser.

Example: If you visit www.google.com, Google’s web server sends the webpage to your browser.

Web servers are essential for running websites, online applications, and storing digital content securely. They work 24/7 to keep websites accessible.


3. What are the main advantages and disadvantages of the Internet?

Ans:

Advantages of the Internet:

  1. Fast Communication: People can send emails, make video calls, and chat instantly.
  2. Unlimited Information: Online resources help students, researchers, and professionals.
  3. Entertainment: Users can watch movies, listen to music, and play games.
  4. Online Shopping & Banking: Convenient for purchasing goods and managing finances.
  5. Remote Work & Education: Allows people to work or study from anywhere.

Disadvantages of the Internet:

  1. Cybercrime: Hacking, fraud, and phishing attacks can cause financial loss.
  2. Addiction: Overuse of social media and gaming affects mental health.
  3. Privacy Risks: Personal data can be stolen or misused.
  4. Misinformation: Fake news and false information spread quickly.

While the Internet has many benefits, people should use it wisely to stay safe.


4. What are the main techniques for Internet connection? Explain in brief.

Ans: There are several ways to connect to the Internet, depending on speed and technology.

  1. Dial-up: Uses a telephone line to connect, but it is very slow and outdated.
  2. Broadband: Provides high-speed Internet through DSL, fiber optics, or cable.
  3. Wi-Fi: A wireless connection that allows multiple devices to connect at once.
  4. Mobile Data (3G/4G/5G): Uses SIM cards in smartphones for Internet access.
  5. Satellite Internet: Useful in remote areas where other connections are not available.

Broadband and Wi-Fi are the most common connections used today due to their speed and reliability. Mobile data is useful for traveling, while satellite Internet is good for rural areas but can be slow.

SHORT ANSWER TYPE QUESTIONS

1. Define Internet.

Ans: The Internet is a global network that connects millions of computers worldwide. It allows users to share information, communicate, and access online services. The Internet works through different technologies like fiber optics, satellites, and wireless networks.


2. What is the main difference between a website and a webpage?

Ans: A website is a collection of multiple web pages linked together under one domain (e.g., www.google.com). A webpage is a single page on a website that contains text, images, or videos.

Example: Google is a website, and its search results page is a webpage.


3. What do you understand by a search engine? Name some search engines also.

Ans: A search engine is a tool that helps users find information on the Internet by searching for keywords. It shows a list of relevant web pages.

Examples: Google, Bing, Yahoo, DuckDuckGo.


4. What is an e-mail?

Ans: Email (Electronic Mail) is a digital way of sending messages over the Internet. It allows users to send text, images, and attachments instantly. Popular email services include Gmail, Yahoo Mail, and Outlook.


5. What is TCP/IP?

Ans: TCP/IP (Transmission Control Protocol/Internet Protocol) is a set of rules that helps computers communicate over the Internet. TCP ensures data is sent correctly, while IP helps route the data to the correct destination.


6. What is the Internet? Write its two main uses.

Ans: The Internet is a worldwide network that connects computers for communication and information sharing.

Two main uses:

  1. Communication: Emails, video calls, and messaging apps.
  2. Information Access: Searching for news, research, and online learning.

7. What is FTP?

Ans: FTP (File Transfer Protocol) is a method used to transfer files between computers over the Internet. It is commonly used for uploading and downloading files from web servers.


8. Define URL.

Ans: A URL (Uniform Resource Locator) is the web address of a webpage. It tells the browser where to find a specific page on the Internet.

Example: The URL of Google is https://www.google.com.


9. Write the main features and uses of e-mail.

Ans:

Features:

  • Send and receive messages instantly.
  • Attach files, images, and documents.
  • Organize emails into folders.

Uses:

  • Personal and professional communication.
  • Sending documents and official letters.
  • Marketing and customer support.

10. What is DNS? Give an example of DNS.

Ans: DNS (Domain Name System) converts website names (like www.google.com) into numerical IP addresses so computers can understand them.

Example: Google’s DNS is 8.8.8.8.


11. Differentiate between Internet and Intranet.

Ans: The Internet is a global network that connects millions of computers, allowing public access to websites, emails, and online services. It is open to everyone.

The Intranet is a private network used within an organization for communication and data sharing. It is restricted to employees and is more secure than the Internet.

VERY SHORT ANSWER TYPE QUESTIONS

1. What is a webpage?
Ans: A webpage is a single digital page on a website that contains text, images, and links.

2. What do you understand by a website?
Ans: A website is a collection of multiple web pages under one domain name.

3. Name some examples of search engines.
Ans: Google, Bing, Yahoo, and DuckDuckGo are examples of search engines.

4. What are the main parts of an e-mail ID?
Ans: An email ID has two main parts: the username (before @) and the domain name (after @).

5. Write the full form of:

(i) www – World Wide Web
(ii) TCP/IP – Transmission Control Protocol/Internet Protocol
(iii) HTML – HyperText Markup Language
(iv) ISDN – Integrated Services Digital Network
(v) ARPANET – Advanced Research Projects Agency Network

6. What is a server?
Ans: A server is a powerful computer that stores and manages data for websites and networks.

7. What is the main function of a client?
Ans: A client requests services or data from a server over a network.

8. What do you understand by the Internet?
Ans: The Internet is a global network that connects computers to share information and communicate.

9. Define Intranet.
Ans: An Intranet is a private network used within an organization for secure communication and data sharing.

1. Which is an example of the Internet?
(a) LAN
(b) MAN
(c) WAN
(d) None of these
Ans: (c) WAN

2. How many networks can be connected over the Internet?
(a) 10
(b) Below 100
(c) Between 100-1000
(d) Unlimited
Ans: (d) Unlimited

3. Web browser is:
(a) hardware
(b) Internet means
(c) software program
(d) means to use Internet
Ans: (c) software program

4. Main work of FTP:
(a) file transfer
(b) change place of file
(c) file processing
(d) storage of file
Ans: (a) file transfer

5. WWW is:
(a) hardware
(b) network cable
(c) network card
(d) means to use the Internet
Ans: (d) means to use Internet

6. Internet is used for:
(a) data transmission
(b) data storage
(c) change data
(d) all of these
Ans: (d) all of these

7. Which is an example of a search engine?
(a) Yahoo
(b) Google
(c) Rediff
(d) All of these
Ans: (d) All of these

8. It is an environment on the Internet for selling or purchasing:
(a) E-mail
(b) E-commerce
(c) E-mail ID
(d) None of these
Ans: (b) E-commerce

9. This is an information searching system:
(a) E-mail
(b) E-commerce
(c) Search engine
(d) Web browser
Ans: (c) Search engine

10. Which is not a protocol?
(a) TCP/IP
(b) ISP
(c) HTTP
(d) X-25
Ans: (b) ISP


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Class IX Lesson 11 (Internet) Hindi Medium

  दीर्घ उत्तरीय प्रश्न  1. इंटरनेट क्या है? इसके मुख्य उपयोग क्या हैं? उत्तर: इंटरनेट एक वैश्विक नेटवर्क है जो लाखों कंप्यूटरों को आपस में ज...