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(上接第 19期 )数据通信网是由许多计算机和各类终端设备通过通信线路连接起来的复合系统 ,是通信技术和计算机技术自然融合的产物。数据通信网按其覆盖范围大小可分为ＬＡＮ(局域网 ) ,ＭＡＮ(城域网 ) ,ＷＡＮ(广域网 )。1 ＬＡＮ1.1 ＬＡＮ的特点 (见表 1)表 1 ＬＡＮ的
(Continued from the 19th) Data communications network is composed of many computers and various types of terminal equipment connected through the communication lines of the composite system is a natural fusion of communications technology and computer technology products. Data communication network according to its coverage can be divided into LAN (LAN), MAN (MAN), WAN (WAN). 1 LAN1.1 LAN features (see Table 1) Table 1 LAN