Introduction to Huawei HCIA-Transmission Media

Link
twisted pair optical fiber coaxial
cable Coaxial cable: thick cable 10Base5 500 meters thin cable 10Base2 200 meters
twisted pair: orange white orange green white blue white green brown white brown
1 2 3 6 (1 and 2 output, 3 6 and input. used to transmit data, the remaining four lines as a telephone line)
T568A white green white green orange orange brown white brown white blue
three or more routing devices like PC firewall device can configure the IP
Layer Device switch
Because the current device is smart, the network card of the same type of device will automatically adjust. When the two output lines of the A device send data to the B device, the B device's network card will automatically follow the two lines as the input
twisted pair distance of one hundred meters effective transmission line
optical fiber (Kao invention) single mode (1310nm) transmission distance
multimode (850nm)
interface type ST (stab trist insert rotation)
the FC (Fernule connect metal connectors) typically use a dust-proof ability of the operator Strong
SC (Square Connect square connector) is easy to operate and not easy to oxidize
LC (Lucent Connect optical connector)
HUB is a shared network: forwarding data is by broadcasting a HUB and all connected devices are in the conflict domain.
Switch: forwarding data is learning by the switch The
four steps of CSMA/CD (Carrier Sense Multiple Access Conflict Detection) of the MAC address table :
first listen and then send while listening while sending conflict, stop sending, delay and send again