LAN WAN (Local Area Network, LAN) (Metropolitan Area Network, MAN) L A N M A N L A N M A N 1 ~ 1 3 m i l e (wide area network, WA N ) WA N L A N L A N 3 0 m i l e WA N I n t e r n e t L A N WA N L A N M A N WA N L A N M A N WA N L A N L A N L A N L A N L A N 3 4 L A N WA N L A N L A N 1-7 L A N L A N
L A N L A N L A N L A N WA N 1-8 L A N ( WA N ) L A N L A N L A N WA N L A N L A N WA N ( 1-9 )
E - m a i l LAN WAN (translational bridge) L A N ( WA N ) L A N ( WA N ) I n t e r n e t M i c r o s o f t N o v e l l L A N L A N (LAN AT M emulation) ( 9 ) ( AT M ) LAN/WAN OSI L A N WA N (O Interconnection O S I ) O S I L A N WA N Internet O S I O S I 7
O S I L A N O S I L A N L A N (bus topology) P C, I E E E
( ) (ring topology), L A N
(Star topology) L A N, ( ) -
I E E E LAN I E E E 8 0 2 8 0 2 L A N I E E E 8 0 2. 3 L A N I E E E 8 0 2. 5 3 L A N (Fiber Distributed Data Interface) 1 0 M b p s 1 0 0 M b p s 1 G b p s (Carrier Sense MultipleAccess with Collision C Detection S M A / C D ) C S M A / C D ( ) C S M A / C D (carrier sense) I B M 7 0 L A N 4 M b p s 1 6 M b p s 1 0 0 M b p s (Multistation Ac c e s s Un i t M A U ) M A U M A U ANSI IEEE ITU ISO Internet ISOC Internet (IETF)
EIA TIA ANSI ISO IEEE 802 802 1 802 2 802 3 CSMA/CD 802 4 802 5 LAN MAN 802 6 LAN MAN 802 7 802 8 802 9 802 10LAN MAN 802 11 802 12 802 14 ITU ISO EIA TIA EIA TIA