Educ

1. WWW
and
Web Browser
Simple guide for understanding
of WWW and Web Browser

2. What we’ll see
Introduction
Web Browsing Software
▶ Popular Web Browsing Software
Configuring Web Browser
Search Engines
▶ Popular Search Engines / Search for content
▶ Accessing Web Browser
▶ Privacy setting for security
▶ Do’s and Don’t
What if…
▶ Using Favorites Folder/bookmark feature
▶ Downloading Web Pages

3. INTRODUCTION
 The INTERNET is 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.

4. Basic Services of the INTERNET
Basic Services Of The INTERNET
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 .

5. Electronic Mail
E-Mail is a rapid and productive communication tool because :
 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.

6. 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.
 Anonymous FTP site in 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 publically accessible sites because they
can be accessed by any user on internet.

7. 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.

8. Introduction to WWW
• WWWstands for World Wide Web,and it is an advanced information retrieval
system. Currently it is mostly in an experimental stage, but it is being
developed rapidly.
• WWWsupports more kinds of information, for instance pictures, graphs,
colours and fonts, provided that the user's device supports them. Voice can
also be delivered, if the user's device has a sound generator.

9. 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.

10. POPULAR WEB BROWSERS

11. INTERNET SEARCH ENGINES
Internet search engine is an application, which helps users to locateWeb 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 theWWW 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.

12. 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 the WWW and 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 different weights.

13. Some Popular Internet Search Engines

14. Don’ts
1. Beware of irrelevant links.
2. Beware of irrelevant keywords.
3.Don't "keyword stuff" your meta
tags.
4. Don't create "link farms."
5. Don't create "link farms."

15. Accessing Web
Browser-
Chrome
Step 1: Install google chrome for
windows/linux/mac etc.
Step 2: Navigate among desktop icons
and locate google chome’s icon on
desktop.
Step 3: Double click and Open.

16. Privacy Settings
Choose your privacy settings
Some Google Chrome features use web services to improve your browsing experience. For example, Chrome can use a web service
to automatically offer completions for search terms or website addresses you type in the address bar. Most of these settings are turned
on by default. You can turn them off whenever you want.
Turn off a privacy setting
.
1.In the top-right corner of the browser window, click the Chrome menu icon
2.Click Settings.
3.At the bottom of the page, click Show advanced settings.
4.Under Privacy, uncheck any privacy settings you no longer want. When you turn a privacy setting off, that information will not be
sent to Google.
Content settings
•About this feature: The browser can store cookies and allow websites to use certain capabilities, such as plug-ins and JavaScript, to
customize your browsing.
•Information that is sent: By default, the browser allows cookies, images, JavaScript, and plug-ins. Pop-ups are blocked by default.
Location sharing and desktop notifications are only allowed with your specific permission.

17. Import or export bookmarks
You can easily import bookmarks or favorites from another browser into Google Chrome.
Similarly, you can always get your bookmarks out of Chrome by exporting them as an HTML file.
Export bookmarks from Chrome
1.In the top-right corner of the browser window, click the Chrome menu
2.Select Bookmarks > Bookmark Manager.
3.Click the "Organize" menu in the manager.
4.Select Export bookmarks.
.
Chrome will export your bookmarks as an HTML file, which you can then import into another browser.

18. 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

19. THANK YOU