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来源:百度文库 编辑:中科新闻网 时间:2024/03/29 18:24:59
A metropolitan area network,or MAN(plural:MANs,not MEN) is basically a bigger version of a LAN and normally uses similar technology.It might cover a group of nearby corporate offices or a city and might be either private or public.A MAN can support both data and voice,and might even be related to the local cable television network.
MAN is designed to extend over an entire city.It may be a single network such as a cable television network,or it may be a means of connecting a number of LANs into a larger network so that resources may be shared LAN-to-LAN as well as device-to-device. For example, a company can use a MAN to connect the LANs in all of its offices throughout a city.

一般来说,城域网规模比局域网要大,但是他们使用的技术相近。 它可能覆盖一组邻近的公司办公室或者整个城市,这样的网络可能是私有的或公共的。城域网可以同时支持数据和声音的传输,甚至可以和当地有线电视连连通起来。城域网的设计,可以拓展到整个城市的各个角落。
它可以以单个网络形式存在,譬如以有线电视网的形式存在或者以多个局域网的形式存,各局域网资源共享,形成了一个更大的端到端的网络。例如,一个公司可以通过一个城域网将整个城市中各地的局域网办公室给连接起来。

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