The document discusses the World Wide Web (WWW) and its key components. It was developed by Tim Berners-Lee in 1989 at CERN to organize research documents available on the Internet. The WWW uses a client-server model where clients access content from servers using browsers. URLs provide a standard way to locate web pages and consist of the protocol, domain, port, and path. Cookies are small files that help websites remember information about users. Web pages are documents that can be static, dynamically generated, or active.

1. www - world wide web
• Introduction
• Architecture
• URL
• Cookies
• Web documents
Content

2.  Commonly referred to as WWW or the web.
 WWW is a service on the Internet. It consist of
sets of linked document known as Web Pages,
which can be viewed using a program called a
browser.
 Developed by Tim Berners-Lee in 1989 at
CERN to organize research documents
available on the Internet.
 Combined idea of documents available by
FTP with the idea of hypertext to link
document.
1.Introduction
Tim Berners-Lee
The World Wide Web

3. 2.Client / Server Architecture
 The WWW is a distributed client / server service in
which a client using a browser can access a service
using a server.
defination
Client/web browser
A browser that interpret and display a web page
Each browser consists of three part:
Controller
Interpreter
Client protocol
Web server :
The web page is stored at the server
Eachtime a client request arrives the corresponding
document is sent to the client

4.  It is the mechanism used by the browsers to retrieve any published source on the web.
The URL defines four things
i. Protocol
ii. Host (computer)
iii. Port
iv. Path
3.URL - Uniform Resource Locator
protocol subdomain domain TLD Path
Top level domain
Uniform resource locator

5. 4.Cookies
Definition
 Cookies are small pieace of file sent to your browser by
a website
 They help that website remember your information for
best experince
Types of cookie
 Session cookie
 Persistent cookie
 Third paty cookie

6. Web document
 A web page is a simple document displayable by a browser .
 Such documents are written in the HTML language
 It is classified into three types
Static web document
Dynamic web document
Active web document
 It is fixed content document that are store in server
 The client can get a copy of document
 Example: html , Ftp
 It is created by a web server whenever a browser request the document.
 CGI is a technology that create and handle dynamic document
 Example : Instagram , youtube .
i) Static web document
ii) dynamic web document
iii) Active web document
definition
 It owns the set of data and has access to storage where the data can be
saved and retrieved.
 It is also known as client side dynamic web
ii) dynamic web document
i) Static web document