Term
| two main types of copper cable |
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Definition
| Twisted pair and coaxial cable |
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Term
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Definition
| uses light to transmit signals |
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Term
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Definition
| measured as the number of bits of data that can be transmitted per second |
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Term
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Definition
| the further an electrical signal travels along a conductive metal cable, the more the signal weakens, or degrades |
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Definition
| carry signals in one direction at a time |
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Definition
| carry traffic in both directions simultaneously |
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Term
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Definition
| electromagnetic interference, EMI, from sources such as electric motors, microwaves, and amplifiers can create noise, or unwanted voltage, that interferes with signals transmitted via network cable |
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Term
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Definition
| the electrical resistance of a cable |
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Term
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Definition
| consists of two or more solid or braided strands of copper wire, each insulated in a non-conductive coating. |
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Term
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Definition
| pairs of insulated strands of copper are twisted around each other to increase noise immunity |
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Term
| unshielded twisted pair, UTP |
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Definition
| less expensive than STP because it does not include materials used for shielding |
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Term
| shielded twisted pair, STP |
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Definition
| more expensive, and not as widely used as UTP,uses foil for shielding |
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Term
| Twisted pair cable: CAT 1 |
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Definition
| rated at 1 Mbps and isn't considered suitable for data networking |
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Term
| Twisted pair cable: CAT 2 |
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Definition
| rated at 4 Mbps and is no longer commonly used for networking |
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Term
| Twisted pair cable: CAT 3 |
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Definition
| rated at 10Mbps and 16 MHz |
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Term
| Twisted pair cable: CAT 4 |
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Definition
| used in older token ring networks. it is rated at up to 16 Mbps |
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Term
| Twisted pair cable: CAT 5 |
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Definition
| used for Ethernet cabling. it is rated at up to 100 Mbps and 100 MHz |
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Term
| Twisted pair cable: CAT 5e |
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Definition
| used for gigabit Ethernet networks although its only rated at up to 1 Gbps |
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Term
| Twisted pair cable: CAT 6 |
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Definition
| for a true Gigabit Ethernet network because its rated at 1 Gbps and operates a freq of up to 250 MHz |
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Term
| Twisted pair cable: CAT 6a |
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Definition
| rated at 10 Gbps but operates a frequency of up to 500 MHz |
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Term
| Twisted pair cable: CAT 7 |
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Definition
| its rated above 1 Gbps and operates at 1 GHz. its the fastest published standard for twisted pair cable and is capable of speeds up to 10 Gbps |
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Term
| T568A (transmitting pins are called pair 3) |
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Definition
| white green/Green, white orange/Blue, white blue/Orange, white brown/Brown |
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Term
| T568B (transmitting pins are called pair 2) |
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Definition
| white orange/Orange, white green/Blue, white blue/Green, white brown/Brown |
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Term
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Definition
| T568A on one end. T568B on the other |
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Term
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Definition
| is not a networking cable, it is only used to connect a PC directly to a router or switch to configure it |
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Term
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Definition
| all the wires share a common axis, one wire runs through the center of the cable, and another braided wire sheath runs around the central wire |
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Term
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Definition
| used a 24 American wire gauage core consisting of a braid of wires with 50 ohm impedance. it was rated at 10 Mbps, and had a maximum length of about 185 meters, 607 feet. the Ethernet standard running over this cable is known as 10Base-2 |
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Term
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Definition
| ThickNet, 10 AWG solid core with 50 ohm impedance. rated 10 Mbps and had a maximum length of 500 meters, or 1600 feet. Ethernet standard is 10Base-5 |
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Term
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Definition
| similar to RG8 but with braided core and 51 ohm imoedance |
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Term
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Definition
| its similar to RG59 but has a solid core with an impedance of 93 ohms |
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Term
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Definition
| is used for shorter distance than RG6, such as for sending a video signal to another part of a building. it uses a 20 or 22 AWG braided copper core and has an impedance of 75 ohms |
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Term
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Definition
| used for DSL internet connections and cable TV. it uses an 18 AWG solid copper and has an impedance of 75 ohms |
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Term
| two main types of connectors are used with coaxial cables |
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Definition
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Term
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Definition
| is a coax connector type used with a 75 ohm cable. RG59 and RG6 cables use this type of connector |
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Term
| Bayonet Neill-Concelman, BNC connector |
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Definition
| commonly used with RG58 cable. it has a male pin hat connects to the core wire and a metal tube connected to the shield of the cable |
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Term
| universal serial Bus, USB cable |
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Definition
| is a standard for connecting peripheral devices to USB ports on PCs or mobile devices using a USB cable |
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Term
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Definition
| known as firewire or ilink, uses STP cable with two or three wire pairs, and connectors with four or six pins, can connect up to 63 devices to a host |
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Term
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Definition
| known as RS232, used a 9-pin or 25-pin D-type connector |
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