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什么是局域网(LAN) 为了完整地给出LAN的定义,必须使用两种方式:一种是功能性定义,另一种是技术性定义。前一种将LAN定义为一组台式计算机和其它设备,在物理地址上彼此相隔不远,以允许用户相互通信和共享诸如打印机和存储设备之类的计算资源的方式互连在一起的系统。这种定义适用于办公环境下的LAN、工厂和研究机构中使用的LAN。就LAN的技术性定义而言,它定义为由特定类型的传输媒体(如电缆、光缆和无线媒体)和网络适配器(亦称为网卡)互连在一起的计算机,并受网络操作系统监控的网络系统。功能性和技术性定义之间的差别是很明显的,功能性定义强调的是外界行为和服务;技术性定义强调的则是构成
What is a Local Area Network (LAN) To give a complete definition of a LAN, there are two ways to do it: one is a functional definition and the other is a technical definition. The former defines a LAN as a system of desktop computers and other devices that are physically separated from one another to allow users to communicate with each other and to share computing resources such as printers and storage devices in a manner that is interconnected. This definition applies to LANs used in office environments, in factories and research institutes. For the technical definition of a LAN, it is defined as a network that is interconnected by a particular type of transmission medium (such as cables, optical cables, and wireless media) and network adapters (also known as network adapters) and monitored by the network operating system system. The difference between functional and technical definitions is obvious, functional definitions emphasize external behavior and services, and technical definitions emphasize