WWW and Web

Browser

Simple guide for understanding of WWW and Web Browser

What we’ll seeIntroductionWeb Browsing Software

Popular Web Browsing SoftwareConfiguring Web BrowserSearch 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

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.

Basic Services of the INTERNETBasic 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 .

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.

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.

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.

Introduction to WWW

• WWW stands 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.

• WWW supports 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.

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.

POPULAR WEB BROWSERS

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 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.

Some Popular Internet Search Engines

Do’s and Don’t while searching

Do’s1. Ask relevant sites to link to your site.2. Pay attention to keyword inclusion and placement.3. Create content-rich information pages to direct traffic to your site.4. Submit your site to online directories.5. Multiply and conquer.

Don’ts1. 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." 

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.

Privacy SettingsChoose your privacy settingsSome 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 setting1.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.

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 Chrome1.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.

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