Information and Communication Technology: Standard 9
Introduction to the Internet
Q 1
Explain the use of any four buttons in the Internet Explorer Web Browser.
Some of the standard buttons that can be found on the Internet Explorer are as follows:
Home: This button will take you to the home page i.e., the first page that opens when the Browser is started.
Reload: The reload or refresh buttons reloads the current page. Any changes that may have taken place will be displayed now.
Stop: The Stop button cancels the present operation. If a page was being loaded, the stop button prevents further loading of the page.
Forward and Back: To view the previous page click on the Back button. Clicking on the forward button will take you to the page that was viewed after the present page. If the present page was the most recent page then nothing will be done.
Some of the other buttons are the Print, Save, Help and History buttons.
Q 2
What are the advantages of E-mail?
The advantages of E-mail are as follows:
1. E-mail provides a quick and cheap means of communicating for both personal and business use.
2. Messages are transmitted securely.
3. Messages can be sent at any time that is convenient to the sender.
4. Messages can be read at a time that is convenient to the receiver.
5. Messages can be stored by both the sender and the receiver.
6. Mass mailings can be easily done using a predefined list of email Ids.
7. The Subject as displayed in the header of an E-mail message allows the receiver to prioritize the messages as per his choice.
8. The use of paper is reduced.
Q 3
List various activities performed using Internet.
Email: One of the most popular uses of the Internet is E-mail. Using E-mail one can send and received messages instantly.
World-Wide-Web: The World Wide Web is a collection of Web-sites on the Internet. These websites are linked to one another to form a global “Web” of information.
Search Engines: Since the amount of information on the Internet is very vast, a Search Engine is required to provide us relevant information.
On-line chatting and conferencing: These are used both for Social Interactions as well as for communication in the Business world.
Newsgroups: Newsgroups on the Internet allow us to get news on various topics as well as post our own views about the topic under discussion.
Business: The use of the Internet for buying and Selling has led to cost advantages for both the seller and the buyer.
Personal: Home shopping, banking, buying of Airline and Railway tickets using the Internet is being used more often.
Education: The Internet stores a huge amount of information and anyone interested in learning can find the resources on the Internet. On-line courses are being offered by many Universities to help students pursue their studies in a convenient way.
Entertainment: Movies, Games, Songs and Videos are some of the Entertainment options available on the Internet.
Q 4
List the Commonly used Internet Browsers.
Besides the popular Internet Explorer from Microsoft and Mozilla's Firefox, several other Browsers are available.
Google's Chrome, Netscape Navigator, Apple Safari, AOL Explorer and Opera are some of the other Browsers.
Q 5
Write a short note on Websites.
A website is a set of web pages along with the text, images, video, audio and other data that can be accessed from this place.
A web-site must be hosted on at least one web Server and accessible from the Internet.
A website is typically made up of web-pages. A web-page is written as plain text mixed with formatting instructions known as Hyper Text Markup Language. (HTML)
A web-page can also include pictures, text, audio and video from other web-sites by using their URLs. (Universal Resource Locators)
Web pages are transmitted over the Internet using a protocol known as Hyper Text Transfer Protocol. Most web-sites are free but some may require a subscription to be paid for use.
Q 6
What are the disadvantages of E-mail?
1. While e-mail itself is free, there are charges to be paid for use of the Internet, Electricity for the computer and also in the case of dial-up connections, charges for the Telephones. These other charges makes it difficult to calculate precisely the cost of e-mail.
2. E-mail is sent using simple text and complicated formatting is not possible.
3. Unless the receiver is always signed on there is no way of knowing if an e-mail message has arrived for him.
4. The receiver of the email must also be an e-mail user and must have access to Computer, a Modem and an Internet Connection.
Q 7
Define the following terms:- Internet, Web Server, Client and E-mail
Internet: The Internet is a system of Interconnected Computer Networks.
Web Server: A Web-Server is a Computer which provides services to users over the Internet.
Client: A computer which depends on the services provided by a Server is known as a Client.
E-mail: The transmission of information in electronic form using the Internet is known as E-mail.
Q 8
Explain Internet and the World Wide Web.
Internet
The Internet is a system of Interconnected Computer Networks. One of the services available on the Internet is the World-Wide-Web.
World Wide Web The World Wide Web is a collection of Web-sites on the Internet. These websites are linked to one another to form a global “Web” of information.
