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The physical cables that link computers in a network
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physical media
The physical cables that link computers in a network
Coaxial Cable
A type of cable used in network wiring and is usually shielded, which means that it is more immune to interference then unshielded cables
Thin Eterhnet/10 Base 2
a thin coaxial cable usually RG-58
Shielded Twised Pair
A type of cabling that includes pairs of copper conductors, twisted around each other, inside a metal or foil shield. This type of medium can support faster speeds than unshielded wiring
Unshielded twisted pair
Twisted pair cable consisting of a number of twisted pairs of copper wire with a simple plastic casing. Because, no shielding is used in this cable, it is very susceptible to EMI, RFI, and other types of interference
Crosstalk
A type of interference that occurs when two LAN cables run close to each other. If one cable is carrying a signal and the other isn't, the one carrying a signal will induce a "ghost" signal in the other cable
Single mode fiber
a very high speed, long distance media that consists of a single strand of fiber glass that carries the signals. Can transmit data 50 times further than multimode fiber at a faster rate
Multimode fiber
Uses light to communicate a signal; the light is dispersed on numerous paths as it travels through the core and is reflected back. Provides high bandwidth at high speeds over medium distances up to about 3000 feet
Straight tip connector
a type of fiber optic cable connector that uses a mechanism similar to the BNC connectors used by Thinnet
Subscriber connector
a type of fiber optic connector. These connectors are square shaped and have release mechanisms to prevent the cable from accidentally being unplugged
Universal serial bus
a versatile, chainable serial-bus technology that connects up to 127 devices at speeds of 1.5 Mbps and 12 Mbps as well as 480 Mbps.
Category 6
Four twisted wire pairs rated for 250 MHz.
Category 5e
Four twisted wire pairs rated for 100 Mhz, but capable of handling the disturbance on eash pair that's caused by transmitting on all four pairs at the same time.
Category 5
Four twisted wire pairs rated for 100 Mhz.
Category 3
Four twisted wire pairs with three twists per foot. This type can handle transmissions up to 16 MHz. Now limited to telecommunication equipment
Category 1
Two twisted wire pairs. It's the oldes type and is only voice grade - it isn't rated for data communication.
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