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This Concept Map, created with IHMC CmapTools, has information related to: chp 10, LAN wiring,Physical Topology, and Interface Hardware 10.10 The topology Paradox A given network technology can use a variety of wiring schemes. The technology determines the logical topology, and the wiring scheme determines the physical topology. It is possible for the physical topology to differ from the logical topology., LAN wiring,Physical Topology, and Interface Hardware 10.2 Speeds of LANs and Computers -each network technology specifies a rate at which data must be sent., to accommodate the difference in speed between the computers and network meduims each computer has a network interface card(NIC) also called network adapter card What is a NIC card? a special-purpose hardware component connects a computer to a network, and handles all the details of packet tranmission and reception., Original Thick Ethernet Wiring consists of thick coaxial cable. Each computer connected to the network requires a hardware device known as a transceiver which attaches to the shared cable and connects through an AUI cable to the network interface in the computer, Thin ethernet wiring consist of a flexible coaxial cable that attaches directly to each computer without a separate transceiver. Although they differ physically, the thick and thin ethernet cables have similar electrical characteristics., Ethernet:although the underlying Ethernet technology has remained the same, the wiring schemes have changed dramatically. wiring schemes Original Thick Ethernet Wiring, a special-purpose hardware component connects a computer to a network, and handles all the details of packet tranmission and reception. How does it connect the type of connection used between a NIC and a network depends on the network technology.Note: the exact details of the connection are not determined by the technology, a given technology can support multiple wiring schemes, Twisted Pair Ethernet is a scheme that uses an electronic device known as a hub in place of a shared cable. The connection between a computer and the hub uses twisted pair wiring, Ethernet:although the underlying Ethernet technology has remained the same, the wiring schemes have changed dramatically. wiring schemes Thin ethernet wiring, the type of connection used between a NIC and a network depends on the network technology.Note: the exact details of the connection are not determined by the technology, a given technology can support multiple wiring schemes example Ethernet:although the underlying Ethernet technology has remained the same, the wiring schemes have changed dramatically., LAN wiring,Physical Topology, and Interface Hardware 10.3 Network Interface Hardware to accommodate the difference in speed between the computers and network meduims each computer has a network interface card(NIC) also called network adapter card, a special-purpose hardware component connects a computer to a network, and handles all the details of packet tranmission and reception. How does it work? NIC understands the electrical signals used on a network, the rate at which data must be sent or recieved, and the details of the network frame format., Ethernet:although the underlying Ethernet technology has remained the same, the wiring schemes have changed dramatically. wiring schemes Twisted Pair Ethernet