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第 9 章 计算机网络基础与因特网

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第 9 章 计算机网络基础与因特网. 基本内容. 计算机网络基础. Internet 基础. 接入 Internet. IE 浏览器. 电子邮件. 9.1计算机网络基础. 计算机网络(技术)是现代计算机技术与通信技术相互渗透、密切结合而形成的一门交叉学科。 1.计算机网络的概念 计算机网络( Computer Network) 就是将地理上分散布置的具有独立功能的多台计算机(系统)或由计算机控制的外部设备,利用通信手段通过通信设备和线路连接起来,按照特定的通信协议进行信息交流,实现资源共享的系统 。. 2.计算机网络的基本特征: - PowerPoint PPT Presentation

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  • 9

  • InternetIEInternet

  • 9.1 ()1. Computer Network)

  • 2.1234

  • 3.1234

  • 4.(1). (LANLocal Area Network)1. (WANWide Area Network).MANMetropolitan Area Network 10Mbps1050

  • (2)EthernetToken RingFDDIFiber Distributed Data InterfaceATMAsynchronous Transfer Mode FRFrame RelayDDNDigital Data NetworkISDNIntegrated Services Digital NetworkADSLAsymmetrical Digital Subscriber Loop

  • (3)TCP/IPNovellMicrosoft

  • (4). bps

  • .

  • 5.1 2

  • 3

  • Token RingFDDI

  • CERNETInternet

  • 6.1 Server) Station) Net word Adapter) HUB

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  • / 1 2/ 3WWWFTP

  • (NIC) ,10Mbps100Mbps10/100MbpsISAPCIISA1610MPCI32

  • HUB

  • 481632 ISAPCI10M100M10/100M1000M

  • Hub Hubhub10OM1010M HubMAC

  • FDDIATM 500300100100 Desktop SwitchWorkgroup SwitchCampus Switch

  • Switch 10Mswitch10M MAC

  • IEEE802.3,IEEE802.3U()CSMA/CDMACMACMACMAC

  • Ethernet-MACMACMACMAC-MACMAC

  • (Router),,(Routing).() .,

  • Routing Table

  • (Bridge),,LAN LANLANLAN MAC MAC ,

  • : (1)LAN; (2);(3)LAN; (4); (5)

  • (Gateway) 1 2 3

  • (firewall)(Internet)

  • 9. 1 2 3

  • (1)

  • NetWare UNIX LinuxWindows NTWindows 2000 UNIX UNIX206070

  • UNIXUNIXInternetUNIX

  • NetWare NovellNetWareIntel208090 NetWare NetWareNetWareDOSNovellNetWareIPX/SPX2090TCP/IP

  • Windows NT Windows NTWindows NT Workstation) Windows NT Server)Windows NT4.0

  • Windows 2000 Windows 2000WindowsNT 4.0Windows95/98Windows 2000Windows 2000Professional

  • Windows 2000Internet

  • Linux LinuxLinus Torvalds LinuxTCP/IPSLIPPPP

  • (2)

  • OSI/RM

  • OSI

  • 717

  • 7

  • OSI1-4OSI5-7

  • TCP/IPIPX/SPXX.25SMTPPPPMicrosoftNETBEUINovellIPX/SPX NWLinkTCP/IPTCP/IPNetBEUI

  • 1TCP/IPTCP/IP(Transmission Control Protocol/Internet Protocol/INTERNETInternetTCP/IPUNIXTCP/IP

  • TCPIPTCPIPTCP/IPTCP/IPTCP/IP

  • NetBEUINETBEUI NetBIOS Extend User InterfaceIBM1985 , NETBEUINETBEUINETBEUI.NETBEUIMAC

  • IPX/SPXNWLinkIPX/SPXInternetwork Packet Exchange/Sequences Packet Exchange/NOVELLNETWARE/NETBEUI. IPX32(IPX

  • IPXSPXNWLinkIPX/SPXIPXNetWareSPXNTIPX/SPXNWLink IPX/SPX NWLink NetBIOSNWLink IPX/SPXWindowsNetWareNWLink

  • 3 BBS

  • 8.Win2000Windows 2000 Professional CD-ROM

  • 1 /10

  • 2.Windows 20001. HUB 2 3 Microsoft Microsoft NetBEUI ProtocolInternetTCP/IP45

  • 9.2 1.? InternetInternetTCP/IP Internet

  • 2. Internet (1) (2)TCP/IPTCP/IP

  • 3. 1969(ARPA) ARPANET 196912(ARPANet)SIGMA-7SDS904IBM360/75PDP-10Internet

  • ARPANet

  • (2)1973TCPTCP1978TCPIPIPIPTCPTCP/IP

  • 1986( NSF) 907 NSFNETARPANETInternet1990Internet1991NSFNet44.73Mbps90

  • (3)90(National Information Infrastructure)NII 1991InternetCommercial Internet Exchange AssociationInternetWWWInternet1997Internet622Mbps

  • (4) 2090Internet1993AT&TSLAC64Kbps 1994420SprintInternet64KInternetInternetInternet71199512CERNET

  • 19961CHINANET19964CSTNETCERNETChinaNetChinaGBN20003UNINET(CNCNET)CMNET

  • 4. Internet(1)Internet TCP/IPInternetInternetInternetInternetISOOSI/RM InternetInternetOSI/RMInternet

  • InternetInternetInternetInternet

  • (2)IPIP IP32InternetInternet202.112.105.118IP 1 Internet 2

  • (3)IPAIP8241.0.0.1~126.255.255.254 B IP1616128.0.0.1~191.255.255.254) 65534 IP192.0.0.1~222.255.255.254)

  • IPIPABC:A:80241.0.0.0129.255.255.255B:161016128.0.0.0191.255.255.255C:241108192.0.0.0223.255.255.255

  • IPABCIPA: 27 =1281600B:214 =1638465,536C:221 =2097150C256

  • IPv6InternetIP3240IP2IPIPAIPIPIPv6IPIPv6128IP

  • (4)

    4IPIPIPIP

  • (5)

    DNSInternetInternet1NDSDomain Name System) IP 2 Domain Name Server)

  • 3~5 ..

    Webwww.microsoft.comIP209.46.230.219IP

  • 5.(1)(2)ISDN ISDN (3)ADSL ADSL.(4)56

  • 9. WAPCDMA IEEE802.11MODEM2Mbps8Mbps

  • 9.2.5 Windows2000123

  • 9.3 20E-mail)WWWFTPTelnetBBSIP

  • 9.3.1 1 Web2 SMTPPOP3IMAPMIME 3 @

  • 4Outlook Express Outlook Express 5 Outlook Express6 9. @

  • 8 9

  • 9.3.2 FTPFTPFile Transfer ProtocolFTP(Download)(Upload)2001743.9%FTP74.9%51.3%

  • 1FTPFTPFTP FTPIP FTP FTP anonymous FTPFTP

  • 2FTPFTPFTPFTPFTPWindowsFTPCuteFTP

  • 9.3.3 Telnet TelnetFTPFTP

  • Telnet:TelnetTelnetBBSFTPArchie

  • 9.3.4 Internet InternetInternet1USENet23

  • 9.4 2090WWWWWWWorld Wide WebInternet

  • 9.4.1WWW1990The European Particle Physics Laboratory1993Mosaic1994Netscape NavigatorMosaic1995SunJavaJavaWWW

  • 9.4.2WWWWWWWebHHTPWebWebWebWebWWWWebWWWWebWWW

  • WWWWWWWebWWWWebWebHTML HTTPWWWHTTPHTTPURL

  • 9.3.3URLURLUniform Resource LocatorURLURLURL URLhttp://www.cnnic.net.cn/develst/rep200107-1.htmlURLHTTPcnnicdevelstHtmlrep200107-1.html

  • : http:// ftp:// gopher:// telnet:// file:// : news: mailto: gopherfile

  • 9.3.4IEInternet ExplorerWebWindowsInternet ExplorerIE

  • IE1IE2IEWeb3IEWeb4. 5IEWeb6. 9. Web

  • 9.5 FrontpageHTMLWord2000Powerpoint2000Frontpage2000

  • 9.5.1 Frontpage2000Frontpage2000FrontPage2000Frontpage2000Frontpage2000HTMLFrontpage2000Frontpage98

  • Frontpage2000WebFrontpage2000Frontpage2000FTPHHTPFrontpage2000

  • 9.5.2 Frontpage2000 Frontpage2000Word2000HTML HTML

  • 9.5.3 Frontpage2000Frontpage2000Microsoft FrontpageFrontpage20001Frontpage20002

  • Frontpage2000 :

  • 9.5.4 1 2 3

  • 9.5.5 Frontpage20001Frontpage2000 Frontpage2000 2 Frontpage2000Frontpage2000

  • 3FrameHTML9.62

  • 18 P335

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