文档介绍：1? 2005 Nokia V1- / yyyy-mm-dd / pany Confidential Schedule for IP Seminar 本次 SEMINAR 所有的文档限于内部交流讨论 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 2? 2005 Nokia V1- / yyyy-mm-dd / pany Confidential Introduction Tcpip Switching routing Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 3? 2005 Nokia V1- / yyyy-mm-dd / pany Confidential OSI 七层协议模型系统 A应用层表示层会话层传输层网络层数据链路层物理层系统 B应用层表示层会话层传输层网络层数据链路层物理层网络数据数据头 2数据数据头 3 数据信息单元 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 4? 2005 Nokia V1- / yyyy-mm-dd / pany Confidential TCP/IP 与OSI 模型比较应用层表示层会话层传送层网络层数据链路层物理层应用层 TCP UDP 协议网络层 IP 协议网络接口协议物理网络 OSI TCP/IP Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 5? 2005 Nokia V1- / yyyy-mm-dd / pany Confidential TCP/IP 结构 FTP SMTP DNS TFTP TCP UDP ICMP IPARP RARP 网络接口协议 Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 6? 2005 Nokia V1- / yyyy-mm-dd / pany Confidential TCP/IP 应用层 DNS Domain Name Service TCP, UDP 53SMTP Simple Mail Transport Protocol TCP