Internet: Infra-estrutura de tecnologia de informação para a empresa digital
Autor: sistemasdeinformacao-sig | Publicado: 2012-05-30T18:08:00-07:00

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A internet surgiu como uma rede do Departamento de
Defesa dos Estados Unidos, desenvolvida para conectar professores
universitários e cientistas no mundo todo. Para interliga-se à internet,uma
rede já existente precisa pagar uma pequena taxa de inscrição e adotar
determinados padrões baseados no modelo de referencia TCP/IP. Ainda hoje não se
pode conectar-se diretamente com a Net. Ninguém é dono da Internet e ela não
tem nenhuma organização administrativa formal.

A Intenet é firmada na tecnologia cliente/serviço.
Pessoas que usam a internet a controlam o que fazem através de aplicativos
clientes, como o software de navegação.&nbsp;
Serviços de Internet são implementados por um ou mais de um programa de
software, esses serviços podem rodar em um só computador servidor; diversos
serviços podem ser alocados a máquinas diferentes. As plataformas clientes
atuais vão além dos PC’s de mesa, como celular e decodificador de televisão.

O servidor Web recebe requisições de páginas Web do
clientes e as acessa do disco onde estão armazenadas, também podendo acessar
outras informações de aplicações de sistema interno de informação de uma
organização e seus bancos de dados e desenvolver essas informações ao cliente
na forma de páginas Web. É gerenciado as interações entre o servidor Web e os
sistemas internos de informação da organização para acompanhar
estoques,processar pedidos e outras funções de comércio eletrônico.

Alguns serviços de Internet:

·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
E-mail

·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Bate-papo

·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Telnet

·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Grupos
de discussão Usenet 

·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Listeservs

·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
FTP

·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
World
Wide Web



Uma função básica da Internet é a recuperação de
informações, como pesquisas por bibliotecas online, analisar dados que foram
abertos ao público por corporações e governos, e muito mais. 

A Internet 2 e a Next Generation
Internet (NGI) são consórcios que representam 180 universidades,agências
governamentais e empresas privadas que trabalham em uma inovada e poderosa
versão de Internet, de grande largura de banda.



GRUPO 8: Patricia Cabral, Rayane Camila e Sarah Oliveira.