chapter_02

Chapter 2Technical Infrastructure For Electronic Business1 ,Agenda Internet ConceptMa

Chapter 2Technical Infrastructure For Electronic Business

1

Agenda Internet ConceptMain Technology of

Internet

Main Technology of InternetIP Address, Domain Names, URLClient/Serverand Applications

on Client/Server and Applications on

Internet P2P and Applications on Internet

P2P and Applications on Internet

Cloud ComputingWeb

HTML and XML

2

Internet Concept

Inter-

Network

the Internet is a network of 1000s of interconnected networks all over the

world 由分布在世界各地的网络系统通过通信介质（光纤、电缆、微波和卫星等）及网络设备连接起来的彼此可以交流信息且规模巨大的网络系统

History ：DARPA-NSF

3

Internet Concept4

Agenda

Internet Concept

M i T h l Main Technology of Internet

f I t

t

IP Address, Domain Names,URLClient/Server and Applications on

Internet

P2P and Applications on Internet

Cloud Computing

Web

HTML and XML HTML and XML

5

Main Technology of InternetWhy do EB develop broadly

on Internet on Internetthe same network structures, communication , protocols, and Web standard

6

Internet Structure

the interconnected backbones which have international reach(Networkhave international reach(Network Service Provider)

a multitude of access/delivery sub-

ltit d f /dli

b networks(ISP)

thousands of private and institutional networks connecting various organizational servers and i i i l d containing much of the information of interestf i t t

7

Internet Structure ISP ISP

NAP

ISP

NAP

ISP

ISP ISP

Backbone 8NAP ISP ISP ISP NAP ISP

Backbone--Network Service

Providers 主要骨干网

中国电信

中国联通

中国移动

中国科技网

中国教育和科研计算机网

中国国际经济贸易互联网

合计国际出口带宽数（Mbps ）67889845678898.453992077286972869 19630116552 1182261.45

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OSI & Internet ProtocolConcept of network protocola set of rules that determine how two f l h d i

h computers communicate with one another over a network

another over a networkOSI(Open Systems Interconnection)

ISO

Structure

R

l Rule

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