第二章 网络技术基础
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Transcript of 第二章 网络技术基础
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2.1 2.1.1 1
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21 2345
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2.1.211 2
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3 modem repeater hub switch bridge router gateway
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2.1.1 d
abecb
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4Firewall 5
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2
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2.1.311Local Area NetworkLAN 2Metropolitan Area NetworkMAN 3 Wide Area NetworkWAN
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21 EthernetToken RingATM2 3 4 NovellNetware3COM3+OPENMicrosoftWindowsIBMLAN ManagerBANYANVINES
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3
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abdce
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2.1.4 1 Protocol2Open System Interconnection OSI ISOISOIEC 7498X2007OSI OSIOSI
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3 123
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4OSI OSI7
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2.1.3 OSI
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2.1.5 1TCP/IP TCP/IP
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2.1.4 TCP/IP OSITCP/IPICMP
IP
TelnetFTPTFTPSMTPDNS
TCPUDP
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2TCP/IP TCP/IP1IP Internet ProtocolTCP/IP2TCP Transportation Control Protocol3UDP User Datagram Protocol4ICMP Internet Control Message Protocol5TCPUDP
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2.2 2.2.11 Internet
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2 1 2 3 4 5
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2.2.2 1 33.6~ 56KB/s 2ADSL ADSLAsymmetric Digital Subscriber Line2 ~ 9MB/s640KB/s ~ 1MB/sADSL
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3ISDN ISDNIntegrated services digital networkISDN128 KB/s64 KB/s 4DDN DDNDigital data networkDDN64 KB/s ~ 2 MB/s
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5 10 ~ 100 MB/s 6 36MB/s10MB/s
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7 50 ~ 100100MB/s ~ 10GB/s 8 9.6 KB/sGSM~163KB/sCDMA
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2.2.3 IP IP1IP 32IP2Domain Name IPIP
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Web www.cnnic.net.cn 2.2.1
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.uk.au.us.ca.ch.in.cn.hk.fr.de.sg.jp.it.tw.ru.mx.mo.ws.tv.ccCocos.bz
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.com .biz .edu .int .gov .org .mil .info .net .name .coop .aero .pro .museum
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.ac .gov .edu .org .com .net NICNOC
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.bj .ah .sc .sh .fj .gz .tj .jx .yn .cq .sd .xz .he .ha .sn .sx .hb .gs .nm .hn .qh .ln .gd .hk .jl .gx .mo .hl .hi .tw .js .xj .zj .nx
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2.2.41HTTP HTTPHypertext Transfer Protocol2SMTPPOPIMAP SMTPSimple Mail Transfer ProtocolPOPPost Office Protocol IMAPPOPPOPIMAPIMAPPOP3FTP File Transfer ProtocolTCP/IPTCP/IP/
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2.2.51 Hypertext Markup LanguageHTML Standard Generalized Markup LanguageSGML SGMLDTDDTD SGML HTML HTML
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WebHTML 1 URL404 URL 2 3 4 5
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2 Extensible Markup LanguageXMLCascading Style SheetsCSSDHTML XMLSGMLSGMLHTMLWebXMLSGMLXMLHTML XMLXSLExtensible Style LanguageXLLExtensible Linking LanguageXSLXMLHTML
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2.3 2.3.1 FTP 1FTP FTP/
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2FTP
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FTP12FTPFTP 3FTPFTPreadme
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2.3.2 Telnet Telnet 1Telnet 2Telnet loginUsernamePassword logout
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2.3.3 Electronic MailE-mail 1 SMTPSimple Mail Transfer ProtocolPOPPost Office Protocol
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2.3.4WWW WWWWorld Wide WebHTTPHTML Uniform Resource LocatorURL Protocol//IP// HTTPFTPTelnetNewsFile http://www.nju.edu.cn /njuc/dep/index.htm ftp://ftp.isi.edu/
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2.3.5 BBS BBSBulletin Board System BBSBBSWindows
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2.3.6 GopherHttp Gopher Googlewww.google.comwww.yahoo.comwww.sohu.comwww.163.comwww.sina.com.cn+
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2.42.4.1 1 Intranet
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2123456
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3 4WWW3 Database Server WWW
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2.4.21 Extranet = +
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2 1 2 3 4
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31 2 3VPN IP
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2.5 Electronic Data Interchange EDI
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2.5.1 ISOEDIEDIUNCITRAL/ WG.4EDIEDI
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EDI1EDI2 345
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2.5.2 EDI EDI EDI 1GTDI 2ANSI/ASC/X.12 3UN/EDIFACT UN/EDIFACTEDIFACT
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2.5.31EDI EDIEDIEDI1Mapper Flat File2Translator EDIEDI3
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2 4EDI12PC3PC4EDI3
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2.5.4 EDI
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2.5.1EDI B
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EDI
EDI