【正文】 so as to make things convenient for system’s future expansion. IV. Choosing The Operation System We suggest you to use Windows 2020 Advance Server (or Windows ) as the main operation system. Having inherited WIN ’s features of being easy to use and the capability of managing graphs, windows 2020 has further strengthened the stability and safety of the system and its functions. Therefore, Microsoft Windows 2020 Advance Server possesses the merits of ’s easiness in use and UNIX’s powerful stability. While at the same time, inparable patibility as well. Microsoft Windows 2020 Advance Server is provided with the following characteristics: A. Closely integrated with the inter: 21 It has a innerintegration with , and support ASP, XML and so on. It can also optimize load on , secure the QOS of Web server, terminal service, EBusiness, VPN and etc. Supporting SMP with as much as 8 channels and RAM with as much as 8GM heighten its performance. Reliable integrated inter service, efficient performed web site and applying program enable it to make full use of Inter’s potentiality safely. B. High Reliability: Support 2node and highly functional clustering service. Guarantee that the critical applying program run normally and be in accordance with the need. The balance of load on can redistribute the Web working load on the broken server. The improved system kernel can offer enhancing design function to lengthen the normal running hour of the system. C. Easier to use and manage: It can be remotely managed from the clustering manager and NLB script mand line interface of any WINDOWS 2020 system which is online in the cluster. clustering service clustering can be accessed and managed as ACTIVE DIRECTORY objects. V. Inter information server Frame Combining our deep understanding to Inter technology with the structure of the main server system, we suggest you to use IIS , which is integrated in Windows 2020 Advance Server as your Inter information server. is provided with the following characteristics: A. Support the latest Inter standard: Using the Web service integrated in Windows 2020 Server, it can employ the latest Inter standard to release and share information on Web. IIS is in accordance with the standard of HTTP , including the properties as PUT, DELETE, and the capability of selfdefining wrong HTTP messages, and support to the selfdefined HTTP head. Meanwhile, support to the latest protocol provides the Web server with a optimized performance. B. Support single IP with multiple web sites: By supporting the domain name, one organization can manage more than one Web site with only one IP address on a single puter, which is running on Microsoft Windows 2020. This makes it possible for ISPs and the Intra of a pany to manage more than one web site , and provide each site with individual user’s domain on a single server. C. News and mail services: Administrator can use SMTP and NNTP service to setup mail and news service in a pany’s Intra, while working together with IIS. SMPT is a monly used protocol of dispatching s between servers, and NNTP is a protocol used to release, distribute and receive USENET news. D. PICS grading service: Administrator can apply for the platform grade for Inter contents choosing, among which it includes contents prepared for mature users. This enables them to manage web sites of different kind and present adaptability concerning special users. E. HTTP Compression: HTTP pression allows the page to be pressed on Web server so as to get a faster transmission to clients. It’s fairly useful under the condition of limited 22 bandwidth. F. FTP and Restarting FTP: FTP, which is used to release messages to Web servers, integrates itself into Windows 2020 Server. Its restarting brings with us a quicker and smoother way to download information from Inter. Now, if there is a break off during the data transmission in a FTP site, we can continue the transmission at the break point instead of transmit the whole document again. G. Support ASP: ASP makes it possible for developer to set up dynamic contents independent of the explorer through script and module on the server. ASP’s function, of which being easy use and able to take the place of CGI and ISAPI, enables developers set any script or server module into their HTML pages. ASP is capable of offering standard data connecting, selfdefining contents for different explorers, and handling mistakes for applied program on the basis of Web. H. XML Integration: Same as the using HTML to describe a Web document, the developers can use XML to describe plicated data structure. Developers can share this information among different applied programs, clients and servers. Using the new explain program of Microsoft, the applied program created by developers enables their Web server to exchange data in XML form with Microsoft Inter Explorer and any other servers which can explain XML. I. Support explorer’s functional module: ASP has another new feature which can ascertain a explorer’s performance accurately. When a explorer sends a cookie in which describes its performances (such a cookie can be installed through a simple client script), developers can build a example program to receive explorer’s attributions returned back from the cookie. This feature can be used to check a explorer’s performance, on which the applied program is adjusted. J. Support multisites management: Normally, the web sites of several departments can run on an independent server, and there’s no need to put up several servers, which can save a lot of ti