LAN = local area network

유선랜기술
 * Ethernet  .... https://en.wikipedia.org/wiki/Ethernet
 * Token Ring - IEEE 802.5 .... https://en.wikipedia.org/wiki/Token_Ring
 * FDDI
 * ARCNET
무선랜기술
 * Bluetooth

크기순으로
LAN(local area network) < MAN(metropolitan area network) < WAN(wide area network)