INTERNET

INTERNET
Created by Arshdeep Rai
class X a
roll no 1013
subject of computer

CONTENTS….
 Definition And History
 Basic services of INTERNET
 The World Wide Web (W.W.W.)
 WWW browsers
 INTERNET search engines
 Uses of INTERNET

Definition and History
 The INTERNETis a network of computers, which
links many different types of computers all over the
world.
 ARPANET was the first WAN and had only four sites
in 1969.
 In 1989, the U.S. government lifted restrictions on the
use of INTERNET, and allow its usage for commercial
purposes as well.

Basic Services Of The NTERNET
 Electronic Mail (E-Mail) –
Allow user to send a mail (message ) to another internet user
in any part of the world in a near-real-time manner .
 File Transfer Protocol (FTP) –
Allow user to move a file from one computer to another on the
internet.
 Telnet –
Allow a user to log into another computer somewhere on the
internet .

Electronic Mail
It is faster than Paper Mail .
Unlike telephone, The persons communicating
with each other need not to be available at the same
time.
Unlike Fax documents , Email documents can be
stored in a computer and be easily edited using
editing programs.
E-Mail is a rapid and productive communication tool because :

File Transfer Protocol
 Moving a file from a remote computer to ones own
computer is known as Downloading.
 Moving a file from ones own computer to a remote
computer is known as Uploading.
 AnonymousFTPsitein a computer allows a user to log in
with the username of anonymous and password that is user’s
E-mail Address.
 Anonymous FTP sites are called publicallyaccessiblesites
because they can be accessed by any user on internet.

TELNET :
Some common uses of telnet service are -:
Using the computing power of the remote computer.
Using a software on the remote computer.
Accessing remote computers data base or achieve.
Logging into ones own computer from another
computer.

The World Wide Web (WWW)
 World Wide Web or W3 is the most popular and promising method
of organizing and accessing information on the INTERNET.
 Hypertext is a new way of information storage and retrieval that
enables authors to structure information in novel ways.
 A properly designed hypertext document can help users to locate
desired type of information rapidly.
 Hypertext documents enable this by using a series of link.
 A link is a special type of item in a hypertext document connecting
the document to another document.
 Hypertext documents on internet are known as Web Pages.

WWW Browsers
 To use a computer as a Web client, a user needs to load on it a special
software tool known as WWW Browser.
 Browser provide following navigation facilities –
 Do not require a user to login to a server computer.
 Enable a user to visit a server computer’s site directly and access
information on it by specifying its URL (Uniform Resource Locator).
 Enable user to create and maintain a personal hotlist of favorite
URL.
 Maintain a history of server computers visited by user in a surfing
session.
 Enable a user to download information in various formats.

INTERNET SEARCH
ENGINES
 Internet search engine is an application, which helps users to locate Web
sites containing useful information and references.
 To search Information :
 A user types the description of the information using the user interference
of the search engine.
 The search engine then searches the requested information on the WWW
and returns the results to the user.
Results enable the user to locate the requested quickly from the last ocean of
information available on the internet.

Major Elements of Internet Search
Engines
 Search Request Interface
enables users to provide description of desired information to the search engine
search engine may allow specifications of simple keywords and phrases,
combination of keywords and phrases using Boolean operators and
exclusion/inclusion operators, and title and URL limiters Information
Discoverer
 Discovers information from WWW & creates a database for the search engine.
 Search engine uses the database to locate useful information during the
search process.
 Presenter of search results search engines often list search results in
accordance to a relevance score.
 Relevance scores reflect the number of times a search term appears in a web
page. Some search engines also allow users to control relevance score by giving

Some Popular Internet
Search Engines

Uses of INTERNET
Some important current strategic of the INTERNET are :
 On-line communication
 Software sharing
 Exchange of views on topics of common interest
 Posting of information of general interest
 Organization promotion
 Product promotion and feedback about products
 Customer support service
 On-line journals, magazines, Encyclopedia, and dictionary
 On-line shopping
 World-wide conferencing

THANK YOU ! 
BY Arshdeep Rai
from class Xth A
Roll no 1013

INTERNET

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