ITEE ITEE-1 | Page 267

Reference The types of Ethernet standards are summarized below. Segment A “segment” is a unit of a LAN. It normally refers to the range of a single cable. Type Standard Reference Gigabit Ethernet “Gigabit Ethernet” is a high-speed Ethernet standard that delivers faster communication speeds of one gigabit per second ( 1000Mbps ) . There are a number of variations for this standard including 1000BASE-T that uses twisted pair cable, and 1000BASE-LX that uses fiber optic cable. Reference Switch A “switch” is a type of network device that connects networks, and refers to a line concentration device that houses twisted pair cable used for 10BASE-T and 100BASE-TX. Fast Ethernet “Fast Ethernet” is a high-speed Ethernet standard that delivers faster communication speeds of 100Mbps. There are a number of variations for this standard including 100BASE-TX that uses twisted pair cable, and 100BASEFX that uses fiber optic cable. Gigabit Ethernet Fast Ethernet Ethernet Reference Transmission speed Segment length Topology Type of cable Connector 10 BASE5 10Mbps 500m Bus Coaxial (10mm diameter) AUI 10 BASE2 10Mbps 185m Bus Lightweight coaxial (5mm diameter) BNC 10 BASE-T 10Mbps 100m Star Twisted pair RJ-45 100 BASE-TX 100Mbps 100m Star Twisted pair RJ-45 100 BASE-FX 100Mbps 2km Star Fiber optic DSC 1000 BASE-T 1Gbps 100m Star Twisted pair RJ-45 1000 BASE-CX 1Gbps 25m Star Twisted pair RJ-45 1000 BASE-LX 1Gbps 550m Star MultiDSC mode fiber optic 1Gbps 5km Star SingleDSC mode fiber optic 1Gbps 550m Star MultiDSC mode fiber optic 1000 BASE-SX *1Gbps = 1000Mbps Reference Backbone LAN A “backbone LAN” is a LAN for connecting multiple LANs in which computers are directly connected, operating them together as a single network. A backbone LAN must be fast and reliable, and have a large capacity. AUI BNC RJ-45 DSC Reference Types of cables Refer to “Chapter 9-4-1 2 (3) LAN components.” 261 Application Connect computers Connect high-speed computers or backbone Backbone LAN