《UFS文件系统与TCPIP简介.ppt

UFS文件系统与TCP/IP简介 * 1,文件系统(SA-238) 1.1 磁盘基本结构 1.2 PC计算机从磁盘启动过程 2.1 Introducing the TCP/IP Model Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. 一般UNIX系统内核提供的接口函数为： Mount(spec,dir,flags,type,dataptr,datalen); 其中，spec是表示文件系统的设备文件名，dir是安装点目录路径名，type是一个字符串，用来指定它是何种文件系统，dataptr是一个指向附加文件系统相关参数的指针,datalen是这些附件参数的总长度。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. 2,TCP/IP(SA-399) Computer networks use protocols to communicate. Protocols define the procedures to be followed by the systems involved in the communication process. A data communication protocol is a set of rules that must be followed for two electronic devices to communicate with each other. These rules describe: ●Syntax – Data format and coding ●Semantics – Control information and error handling ●Timing – Speed matching and sequencing A networking model refers to a common structure that enables communication between two or more systems. Networking models consist of layers. ●Model = structure ●Layer = functions ●Protocol = rules Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. TCP/IP Network Model DNS,FTP,Telnet,DHCP,SMTP,POP3,HTTP TCP,UDP SLIP,PPP ARP,RARP,IP,ICMP Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Peer-to-Peer Communication Each layer on the sender encapsulates the data and adds header information about the corresponding protocol layer. The