1, from the distribution of network nodes (i.e., geographic scope), can be divided into local area networks (Local Area Network, LAN), wide area networks (Wide Area Network, WAN) and metropolitan area networks (Metropolitan Area Network, MAN).
2. According to the switching method, it can be divided into line switching network (Circurt Switching), message switching network (Message Switching) and packet switching network (Packet Switching).
3, according to the network topology can be divided into star network, tree network, bus network, ring network and mesh network.
Expanded
A local area network (LAN) is a group of computers interconnected by multiple computers in a certain area. It is usually within a few kilometers of a radius.
The LAN can realize the functions of file management, application software **** enjoyment, printer **** enjoyment, scheduling within the workgroup, e-mail and fax communication services. LANs are closed and can consist of two computers in an office or thousands of computers in a company.
Two, Wide Area Network (English: Wide Area Network, abbreviated as WAN), also known as wide area network, extranet, public network. It is a remote network that connects computers communicating on LANs or MANs in different areas.
Often spanning a large physical area, covering a range of tens of kilometers to thousands of kilometers, it can connect multiple regions, cities and countries, or across several continents and can provide long-distance communications, forming an international remote network. A WAN is not the same as the Internet.
Three, Metropolitan Area Network (MAN) is a computer communications network established within a city, referred to as MAN, which is a broadband local area network. It is a broadband LAN. Due to the LAN technology with active switching elements, the transmission delay in the network is small, and its transmission medium mainly adopts fiber-optic cables, with a transmission rate of more than 100 megabits per second.
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