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论文作者:www.51lunwen.org论文属性:本科毕业论文 Thesis登出时间:2014-08-24编辑:felicia点击率:18114
论文字数:6361论文编号:org201408190858459958语种:英语 English地区:中国价格:免费论文
关键词:无线网络信息技术wireless networkscomputing servicesAd-hoc networks
摘要:本文是一篇信息技术留学论文。随着当前技术的不断进步,无线网络越来越普及。这些网站让用户可以“自由旅行”,从一个地方到另一个地方的过程中可以享受不中断的计算机网络服务。本文以自组网为例,分析无线网络运营的作用和影响。
The HOPs via an admission point which controls the network and gives it with the safety system. The most usually used normal for wireless networks is the 802.11 principles or Wi-Fi which in fact is not a standard but a entire relatives of principles using the same protocol. The safety in wireless networks by Wi-Fi consists of WEP, WPA and now lately WPA2 which is essentially a ended version of WPA. WPA was shaped as an middle safety system while WPA2 was finalized and experienced since the preceding system contained several serious weaknesses.
Benefits and applications of ad-hoc Networks
Ad-hoc networking need not want any admission points as contrasting to wireless networks in Communications mode. This makes them functional in a set of diverse applications. It is mainly used in Military applications and in save operations where the accessible communication communications Has been damaged or is unavailable, for example later than earthquakes and other disasters. But ad-hoc is these days also being used in a lot of commercial applications. Like we see that mobile phones and PDAs using the Bluetooth protocol system, seeing as it is quick and fairly simple to setup and doesn't need any additional tools.
Characteristics and standards of ad-hoc
As the wireless standard 802.11 does hold up ad-hoc networks, it is extremely limited since it doesn't offer routing among the nodes, so a hop can only arrive at the straight noticeable nodes in its place protocols similar to the Ad-hoc, On-demand Distance Vector protocol or Dynamic Source Routing protocol can not be used. These routing protocols are so called immediate routing protocols, sense that it gives a route to a target only when wanted. In difference the other usually used routing protocols on the Internet are practical sense that they will set up routes separately of the traffic in the network. This implies that the reactive network is quiet
pending a connection that is wanted and thus lessens the overcrowding in the network. DSR is an even additional optimized protocol which doesn't need for the sending forwarding computers to have current routing tables but have a list of network addresses in the form of the packet. The protocol because of eavesdrops the limited network traffic and listens for this routing data and information included in the packets and adds it to its personal routing table. One of the major goals when scheming mobile ad-hoc networks where the no本论文由英语论文网提供整理,提供论文代写,英语论文代写,代写论文,代写英语论文,代写留学生论文,代写英文论文,留学生论文代写相关核心关键词搜索。