World wide web Architecture

7/26/2019 World wide web Architecture

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PRESENTATIONON

WORLD WIDE WEB ARCHITECT


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WHAT IS WORLD WIDE WEB.

World wide web Is a system of interlinked hypertext

that are accessed via the Internet with a web browse

Also known as www and w3.


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INTERNET

The Internet is a global system of interconnected comp

networks that use the standard Internet protocol suite

to link several billion devices worldwide. It is an

international networkofnetworks that consists of milprivate, public, academic, business, and government p

switched networks, linked by a broad array of electron

wireless, and optical networking technologies


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DIFFERENCE BETWEEN W3 &

INTERNET

The Internet is a global, interconnected network of comput

devices.

The World Wide Web (WWW) is one set ofsoftware services running on the Internet.


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W3 ARCHITECTURE

The www today is a distributed client/server service

client using a browser can access a service using a se

However, the service provided is distributed over mlocations called sites.


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W3 ARCHITECTURE

Protocols

Client server

HTML URL

URI


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W3 PROTOCOLS

HTTP (hypertext transfer protocol)

FTP (File transfer protocol)

TCP (TRANSMISSION CONTROL PROTOCOL)


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HTTP, FTP & TCP

HTTPThe Hypertext Transfer Protocol (HTTP) is a protocol

mainly to access data on the World Wide Web.

FTP

The File Transfer Protocol (FTP) is a standard network

protocol used to transfer computer files from one host to

host over a TCP-based network

TCP

TCP is connection orientedonce a connection is establi

can be sent bidirectional.


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CLIENT SERVER

Client request to server and server make response accordinrequest


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HTML

Hypertext Markup Language, a standardized system for

text files to achieve font, color, graphic, and hyperlink e

World Wide Web pages.

A markup language is a set of markup tags HTML documents are described by HTML tags

Each HTML tag describes different document content


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URI

a uniform resource identifier (URI) is a used to identify a na

of a resource. Such identification enables interaction with

representations of the resource over a network, typically

the World Wide Web, using specific protocols. Schemes

specifying a concrete syntax and associated protocols definURI. The most common form of URI is the uniform resource

locator (URL), frequently referred to informally as a web ad


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URL (UNIFORM RESOURCE

LOCATOR) Abbreviation of Uniform Resource Locator (URL)it is the glo

address of documents and other resources on the World W

Web.

The first part of the URL is called aprotocol identifierand it

indicates what protocol to use, and the second part is calledresource nameand it specifies the IP address or the domain

name where the resource is located.


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URN

URN stands for Uniform Resource Name. URN is also subse

URI

One of the best example of URN is ISBN number which is us

uniquely identify a book. URN is completely different than URL as it doesn't include a

protocol.


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DIFFERENCE BETWEEN URI, U

&URN

1) Every URL and URN is URI, because URI is super set of both

and URN.

2) URL includes protocol e.g. http://, ftp:// along with locatio

identify resource e.g. http://www.blogspot.com/abc.html.

3) URN are unambiguous way to identify a resource. ISBN nu

are best examples of URN.

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