2. Wireless LAN
• "A LAN is a data communication
system allowing a number of
independent devices to communicate
directly with each other, within a
moderately sized geographic area
over a physical communications
channel of moderate data rates."
3. Wireless LAN
• Computer network-based geographical
scope that they cover approximately
divided into three categories: LAN (Local
Area Networks, referred to as LAN),
metropolitan network (Metropolitan Area
Networks, referred to as MAN), and WAN
(Wide Area Networks, referred to as
WAN).
4. Wireless LAN
• LAN usually refers to the scope of
the five kilometers in the network, a
common local area network such as
IEEE 802.3 Ethernet, IEEE 802.4
Token-Bus, IEEE 802.5 Token-Ring
and so on.
5. Wireless LAN
• Metropolitan network generally
refers to the coverage of 50 km of
the network, such as a city will be
the laying of one or more
metropolitan network.
