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1、原文题目: Campus Network planning and ConstructionAt present, Chinas rapid development of the cause of the campus network, to early 2003, almost all colleges have set up their own campus network, and carry out a variety of its services and applications. Campus Network build a rich learning resources to
2、enhance the efficiency of education. But as the number of users increased dramatically increased and the pattern of operations, campus network security is increasingly conspicuous, and the ever threat to the healthy development of the campus network, as an education development of the information in
3、dustry should not be neglected problem. This paper focuses on the campus network design and the process of building the campus network established the goal of building, campus network technology programme design, information resources construction, application software development, network managemen
4、t and security, the five key issues. The safe management of the campus net and the maintenance summary:The campus network is the infrastructure of importance of school, taking the school teaching, research, managing and outward communicate many roles of etc.The safe condition of the campus net affec
5、ts the teaching activity of the school directly.Set up in the network of initial stage, the safe problem may still be not outstanding, but along with applied thorough, various data of the campus net would nasty play increment, the safe problem beginning of various each kind perplexs us.The Internet
6、flies to develop soon, to the campus network the teachers and the students life and studies have already produced the profound influence, the network have already not have no place in our life at. But at enjoy the convenience that high technology bring at the same time, we need to be awake of know,
7、the safe problem of network also become the network application more and more increasingly and seriously huge bar, the situation that the campus network safety hazes already arrived and must unify the management and resolve thoroughly, only good resolve the safe problem of network, the application o
8、f the campus network then can be healthy, high speed of development. We should consider the comprehensive usage fire wall and encrypt several measures, such as technique and the anti-virus software.etc. completely, work in coordination, strengthening the management, looking for the balance point of
9、insure the network safety and the network efficiency from it, the safety of the comprehensive exaltation campus network, thus build up rise a set of real in keeping with safe system of the calculator network of the school.Keyword:The fire wall, IDS, loophole scan, VLAN( VPN), interview row form, are
10、a etc.The time todays knowledge-based economy and information technology have the development and popularization of Internet in the world have decided the time the network will become the main tool for information. With the development of computer network technology, network has become an important
11、platform for the exchange of information.21st century the size of the campus network and application level are reflected in schools and science teaching and learning environment an important component of the force, so we should make use of existing campus conditions, design a secure, unified campus
12、network.Internet-based e-learning with time-sensitive, shared, interactive and many of the characteristics of the individual, so it has a traditional teaching model of unmatched advantages. It created a new teaching model, breaking the traditional teaching model at the time and space limitations, th
13、e use of advanced teaching methods and teaching methods, greatly improve the teaching efficiency and teaching effectiveness, teaching and learning activities to enable a new level . Do a good job in the design of the campus network, are among the schools, both internal and external communication bet
14、ween the key and convenient.This thesis focuses on the campus network design and construction process to establish the goal of building the campus network, campus network, network design principles and requirements of network technology selection, selection of network equipment, as well as the forma
15、tion of the campus network for the most important integrated wiring and other key issues, to network security issues are discussed, and give a specific network topology diagram.Large Campus Network DesignBusinesses operating large campus networks are increasingly looking for infrastructure upgrades
16、to:(1) Handle high bandwidth applications such as voice, video, and IP multicast Improve backbone capacity for shared Ethernet or FDDI campus backbones (2) Support applications based on Novell IPX, DECnet, AppleTalk, and SNA (3) Offer high availability, performance, & manageability for your companys
17、 intranet Design suggestions Use Layer 2, Layer 3, or ATM backbone solutions to expand your large campus network. In typical designs, the buildings or different parts of the campus connect together across a high performance, switched backbone. Network redundancy and high availability is provided at
18、each layer. A high capacity, centralized server farm provides resources to the campus, and when combined with Cisco IOS, network management strategies support QoS, security, troubleshooting, and other common management features from end to end. Medium Campus Network DesignA medium campus consists of
19、 one large building or several buildings. Networking for a medium campus is designed for high availability, performance, and manageability. This is also called a collapsed backbone design for medium campus networks. Additional requirements of these designs typically include: (1) High performance and
20、 availability for bandwidth applications such as voice, video, and IP multicast (2) Shared Ethernet or FDDI building backbone which is running out of capacity (3) Support for applications based on Novell IPX, DECnet, AppleTalk, and SNA Based on the Cisco AVVID architecture, these intelligent network
21、 platforms and products provide the basis for a complete network solution. Small campus networks Design In most cases, network redundancy is not the top priority, but cost effectiveness is. Additional requirements of these designs typically include: (1) High performance and availability for bandwidt
22、h applications such as voice, video, and IP multicast (2) Shared Ethernet or FDDI building backbone which is running out of capacity (3) Support for applications based on Novell IPX, DECnet, AppleTalk, and SNA A campus network is a building or group of buildings all connected into one enterprise net
23、work that consists of many local-area networks (LANs). A campus is generally a portion of a company (or the whole company) that is constrained to a fixed geographic area. The distinct characteristic of a campus environment is that the company that owns the campus network usually owns the physical wi
24、res deployed in the campus. The campus network topology is primarily LAN technology connecting all the end systems within the building. Campus networks generally use LAN technologies, such as Ethernet, Token Ring, Fiber Distributed Data Interface (FDDI), Fast Ethernet, Gigabit Ethernet, and Asynchro
25、nous Transfer Mode (ATM). The Enterprise Composite Network Model. As shown in the follow figure. 译文题目:校园网的规划与构建 目前,我国校园网事业飞速发展,至2003年初,几乎所有的大中专院校都建立了自己的校园网,并在其上开展了多种服务和应用。校园网的建设丰富了学习资源、提高了教育效率。但随着用户数的急剧增加和业务样式的增多,校园网的安全问题也日益突出,无时无刻不在威胁校园网络的健康发展,成为教育信息化建设中不容忽视的问题。本文着重论述了校园网设计与建设过程中确立建设校园网的目标,校园网的技术方案
26、设计,信息资源建设,应用软件的开发,网络管理与安全五个关键问题。校园网络作为学校重要的基础设施,担当着学校教学、科研、管理和对外交流等许多角色。 校园网安全状况直接影响着学校的教学活动。在网络建成的初期,安全问题可能还不突出,但随着应用的深入,校园网上的各种数据会急剧增加,各种各样的安全问题开始困扰我们。互联网络的飞速发展,对校园网络中师生的生活和学习已经产生了深远的影响,网络在我们的生活中已经无处不在。但在享受高科技带来的便捷同时,我们需要清醒的认识到,网络安全问题的日益严重也越来越成为网络应用的巨大阻碍,校园网络安全已经到了必须要统一管理和彻底解决的地步,只有很好的解决了网络安全问题,校园
27、网络的应用才能健康、高速的发展。我们应当全面考虑综合运用防火墙、加密技术、防毒软件等多项措施,互相配合,加强管理,从中寻找确保网络安全与网络效率的平衡点,综合提高校园网络的安全性,从而建立起一套真正适合学校计算机网络的安全体系。当今时代的知识经济的产生和信息技术的发展及Internet的全球普及化都决定了网络将成为信息时代的主要工具。随着计算机网络技术的发展,网络已成为人们交流信息的重要平台。基于因特网的网上教学具有时效性、共享性、交互性和个别化等诸多特点,因此它有着传统教学模式无法比拟的优点。它打造了一种全新的教学模式,打破了传统教学模式在时间、空间上的局限,采用先进的教学手段和教学方法,大
28、大提高了教学效率和教学效果,使教学活动上了一个新台阶。做好校园网络设计工作,是学校内部之间,校内和校外之间便捷沟通的关键。21世纪校园网络的规模和应用水平将是体现学校教学环境和科研力量的重要组成部分,因此我们要利用校园内现有的条件,设计一个安全、统一的校园网络。 本论文着重论述了校园网设计与建设过程中确立建设校园网的目标,校园网的组网方案设计原则和所需的网络技术选型,网络设备选择以及对于组建校园网最重要的综合布线等关键问题,对网络安全问题也进行了论述,并给出具体的网络拓扑结构示意图。 大型校园网络设计: 商务运作的大型校园网络在快速提升中寻求结构化的更新1能处理高带宽的网络应用,例如语音,视频
29、,IP多播,提升共享的以太网或光纤的校园网骨干的容量2能支持基于 Novell IPX的NOVELL网络), DECnet协议的网络, AppleTalk协议的网络, 和IBM公司的SNA网络 3能为公司网络提供更高的效率,性能和可管理性使用2层或者3层的ATM骨干方案来拓宽你庞大的校园网。在典型的设计中,校园内的不同建筑或部门,通过高性能交换骨干连接在一起。网络的冗余和高效在网络的每个层面得到体现。一个高容量的集中的数据中心,当它整合了思科的操作系统,网络管理战略,包括支持服务质量,安全,故障排除和其他端到端的一般性解决方案,就能为校园提供各种资源中型网络设计一个中型的校园网络由一个大型的部
30、分或几个部分组成。中型校园网被设计成一个高效的,高性能的,可管理的网络。对中型校园网络来说,这也被称为“折叠的骨干”设计。包括这些典型设计的附加需求:1为语音,视频,多播这些应用程序设计的高性能高效率的带宽应用2能够运行超出容量的共享以太网和光纤的网络骨干。3能够运行在 Novell IPX的NOVELL网络), DECnet协议的网络, AppleTalk协议的网络, 和IBM公司的支持思科的视讯及数据整合架构SNA网络,这些整合的网络平台和产品,提供了一个完整的网络解决方案的基础小校园网设计在大多数情况下,网络冗余并不是最优先考虑,但成本效益的。所需经费增加这些设计通常包括: 1 高性能,
31、高可用的带宽应用,如语音,视频和IP组播 2 共享以太网或光纤分布式数据介面建设骨干这是耗尽能力 3支持为基础的应用Novell公司的IPX , DECnet ,的AppleTalk ,和国民核算体系 校园网是一个建筑物或建筑群全部连接成一个企业的网络,包括许多地方网络( LANs ) 。校园通常是一家公司的部分(或整个公司)这是一个固定的限制,以地理区域。 的鲜明特征的校园环境,该公司拥有通常拥有校园网的物理线路部署在校园内。校园网拓扑结构,主要是局域网技术连接所有终端系统的建设。校园网一般都使用网络技术,如以太网,令牌环,光纤分布式数据介面(光纤分布式数据介面) ,快速以太网,千兆以太网和
32、异步传输模式( ATM ) 。企业综合网络模型。显示在后续的数字。五分钟搞定5000字毕业论文外文翻译,你想要的工具都在这里!在科研过程中阅读翻译外文文献是一个非常重要的环节,许多领域高水平的文献都是外文文献,借鉴一些外文文献翻译的经验是非常必要的。由于特殊原因我翻译外文文献的机会比较多,慢慢地就发现了外文文献翻译过程中的三大利器:Google“翻译”频道、金山词霸(完整版本)和CNKI“翻译助手。具体操作过程如下: 1.先打开金山词霸自动取词功能,然后阅读文献; 2.遇到无法理解的长句时,可以交给Google处理,处理后的结果猛一看,不堪入目,可是经过大脑的再处理后句子的意思基本就明了了;
33、3.如果通过Google仍然无法理解,感觉就是不同,那肯定是对其中某个“常用单词”理解有误,因为某些单词看似很简单,但是在文献中有特殊的意思,这时就可以通过CNKI的“翻译助手”来查询相关单词的意思,由于CNKI的单词意思都是来源与大量的文献,所以它的吻合率很高。 另外,在翻译过程中最好以“段落”或者“长句”作为翻译的基本单位,这样才不会造成“只见树木,不见森林”的误导。四大工具: 1、Google翻译: google,众所周知,谷歌里面的英文文献和资料还算是比较详实的。我利用它是这样的。一方面可以用它查询英文论文,当然这方面的帖子很多,大家可以搜索,在此不赘述。回到我自己说的翻译上来。下面给
34、大家举个例子来说明如何用吧比如说“电磁感应透明效应”这个词汇你不知道他怎么翻译,首先你可以在CNKI里查中文的,根据它们的关键词中英文对照来做,一般比较准确。 在此主要是说在google里怎么知道这个翻译意思。大家应该都有词典吧,按中国人的办法,把一个一个词分着查出来,敲到google里,你的这种翻译一般不太准,当然你需要验证是否准确了,这下看着吧,把你的那支离破碎的翻译在google里搜索,你能看到许多相关的文献或资料,大家都不是笨蛋,看看,也就能找到最精确的翻译了,纯西式的!我就是这么用的。 2、CNKI翻译: CNKI翻译助手,这个网站不需要介绍太多,可能有些人也知道的。主要说说它的有点
35、,你进去看看就能发现:搜索的肯定是专业词汇,而且它翻译结果下面有文章与之对应(因为它是CNKI检索提供的,它的翻译是从文献里抽出来的),很实用的一个网站。估计别的写文章的人不是傻子吧,它们的东西我们可以直接拿来用,当然省事了。网址告诉大家,有兴趣的进去看看,你们就会发现其乐无穷!还是很值得用的。 3、网路版金山词霸(不到1M): 4、有道在线翻译:翻译时的速度:这里我谈的是电子版和打印版的翻译速度,按个人翻译速度看,打印版的快些,因为看电子版本一是费眼睛,二是如果我们用电脑,可能还经常时不时玩点游戏,或者整点别的,导致最终SPPEED变慢,再之电脑上一些词典(金山词霸等)在专业翻译方面也不是特
36、别好,所以翻译效果不佳。在此本人建议大家购买清华大学编写的好像是国防工业出版社的那本英汉科学技术词典,基本上挺好用。再加上网站如:google CNKI翻译助手,这样我们的翻译速度会提高不少。具体翻译时的一些技巧(主要是写论文和看论文方面) 大家大概都应预先清楚明白自己专业方向的国内牛人,在这里我强烈建议大家仔细看完这些头上长角的人物的中英文文章,这对你在专业方向的英文和中文互译水平提高有很大帮助。 我们大家最蹩脚的实质上是写英文论文,而非看英文论文,但话说回来我们最终提高还是要从下大工夫看英文论文开始。提到会看,我想它是有窍门的,个人总结如下: 1、把不同方面的论文分夹存放,在看论文时,对论
37、文必须做到看完后完全明白(你重视的论文);懂得其某部分讲了什么(你需要参考的部分论文),在看明白这些论文的情况下,我们大家还得紧接着做的工作就是把论文中你觉得非常巧妙的表达写下来,或者是你论文或许能用到的表达摘记成本。这个本将是你以后的财富。你写论文时再也不会为了一些表达不符合西方表达模式而烦恼。你的论文也降低了被SCI或大牛刊物退稿的几率。不信,你可以试一试 2、把摘记的内容自己编写成检索,这个过程是我们对文章再回顾,而且是对你摘抄的经典妙笔进行梳理的重要阶段。你有了这个过程。写英文论文时,将会有一种信手拈来的感觉。许多文笔我们不需要自己再翻译了。当然前提是你梳理的非常细,而且中英文对照写的比较详细。 3、最后一点就是我们往大成修炼的阶段了,万事不是说成的,它是做出来的。写英文论文也就像我们小学时开始学写作文一样,你不练笔是肯定写不出好作品来的。所以在此我鼓励大家有时尝试着把自己的论文强迫自己写成英文的,一遍不行,可以再修改。最起码到最后你会很满意。呵呵,我想我是这么觉得的。