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WAN and MAN

1. WANWide Area Network (WAN), as the core of the information superhighway and the backbone of the network, its net structure is as follows. The advantages and disadvantages of network performance are mainly due to the following factors: the capacity of the transmission network, stability, security, switching ability of the core network layer equipments, routing stability, Qos, multicast ability and so on. 2. MANMetropolitan Area Network (MAN) is a multi-function service network which can provide voice, data, image, multimedia, IP access and other services and a variety of value-added services such as VPN and intelligent service, and it is an integrated business network connected with the local operators’ WAN. The MAN includes transmission system, core layer, distribution layer and access layer of the network. 3. LANLocal Area Network (LAN), as an information exchanging platform among enterprises and customers, it enable the internal resources sharing, improve the ef

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