【计算机网络】LAN、MAN、WAN、Internet 辨析

网络分类

• LAN(MAN)
• WAN
• Internet

实际上，LAN、MAN、WAN、Internet，这些都是按照分布范围的分类，只是计算机网络的一种分类方法。

定义(English) LAN(MAN)

A local area network (LAN) is a group of computers and associated devices that share a common communications line or wireless link within a small geographic area.

WAN

A wide area network (WAN) is a geographically dispersed telecommunications network. The term distinguishes a broader telecommunication structure from a local area network (LAN).

Internet

A worldwide system of computer networks - a network of networks in which users at any one computer can, if they have permission, get information from