Term
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Definition
| Broadband over Power Lines |
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Term
| Homeplug Powerline Alliance Specifications |
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Definition
IEEE 1901: For High Speed Communication devices
IEEE 1905: For hybrid home networks |
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Term
| Duplex - Simplex, Full & Half |
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Definition
Simplex - One way communication
Half - Transmit & Receive but not at same time
Full - Simultaneously Transmit & Receive |
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Term
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Definition
| Width of the range of electrical frequencies or number of channels that the medium can support |
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Term
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Definition
EMI – Electromagnetic Interference (Electric motors, power lines)
RFI – Radio Frequency Interference (Radio & TV Station Towers, Cordless Phones) |
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Term
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Definition
| Used to carry network signals |
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Term
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Definition
Also called Guided Media
Wire & Fiber based cable |
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Term
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Definition
Also called Unguided Media
Air (Wireless) |
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Term
| Co-Axial Cable Components |
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Definition
Jacket
Shielding
Dielectric
Conducting Core |
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Term
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Definition
10Base2
Thinnet
Uses BNC Connector
4.7mm |
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Term
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Definition
10Base5
Thicknet
Frozen Yellow Garden Hose
9.8mm
Used for Backbone |
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Term
| Co-Axial used for Cable TV |
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Definition
RG-59/U - Short Distance
RG-6 - Local Cable Companies |
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Term
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Definition
Unshielded Twisted Pair
100 Ohms |
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Term
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Definition
Shielded Twisted Pair
Shielding around Individual Pairs and around all pairs |
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Term
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Definition
Screened Twisted Pair
Only has shielding around all pairs
Should use shielded modular connectors |
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Term
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Definition
| Loose connection result in higher than desired electrical resistance |
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Term
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Definition
| Crushes the wire increasing liklihood that the wire will break |
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Term
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Definition
| Insulation Displacement Connector |
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Term
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Definition
| Used to drive wires into punchdown blocks |
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Term
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Definition
| Used for Speaker wire, door bells, not for networks |
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Term
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Definition
64 kHz
Used for Analog Phones, not data networks |
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Term
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Definition
16 MHz
Digital & Analog Phone
10BaseT |
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Term
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Definition
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Term
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Definition
100 Mhz
10 BaseT, 100 BaseTX
24 AWG |
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Term
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Definition
100 Mhz
100 Base TX, 1000 BaseT
24 AWG |
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Term
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Definition
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Term
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Definition
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Term
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Definition
American Wire Gauge
Refers to the number of times the wire is reduced in size |
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Term
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Definition
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Term
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Definition
Used for Telephone
Too much crosstalk for Data |
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Term
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Definition
Registered Jack 45
8 Positions 8 Contacts |
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Term
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Definition
Registered Jack 11
6 Positions 4 Contacts |
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Term
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Definition
RJ-45 on one side
IDC Opposite side
Used for wall mount |
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Term
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Definition
TIA/EIA Standard for serial transmission
DB-25 or DB-9 |
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Term
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Definition
Rectangle USB connector
usually found on the USB HUB |
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Term
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Definition
Square USB connector
usually found on the USB Device |
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Term
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Definition
Singlemode to Ethernet
Singlemode to Multimode
Multimode to Ethernet
Fiber to Co-Axial |
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Term
| TIA/EIA Cable Standards (2 Types) |
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Definition
T-568A - Designated Structured Cabling Standard
T-568B - Alternative Wiring |
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Term
Twisted Pair
TIP (2 Properties) |
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Definition
Positive +5 Voltage
White Jacket with a secondary Colour |
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Term
Twisted Pair
Ring (2 Properties) |
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Definition
Negative -5 Voltage
Coloured Jacket with White Secondary Colour |
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Term
Twisted Pair
Colour Coding (4 Properties) |
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Definition
| Blue, Orange, Green, Brown |
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Term
Twisted Pair Identifiers
(3 Properties) |
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Definition
Pair numbers
Tip and Ring
Colour Coding |
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Term
| Crossover Cable (6 Devices) |
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Definition
Used to connect Like Devices
1. Switch to Switch, 2. Switch to Hub, 3. Hub to Hub, 4. Router to Router (Ethernet), 5. NIC to NIC, 6. NIC to Router (Ethernet) |
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Term
| Straight Through Cable (3 Devices) |
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Definition
1. Switch to Router
2. NIC to Switch
3. NIC to HUB |
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Term
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Definition
| Proprietary Cisco Cable used to connect to the console port on routers |
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Term
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Definition
British Navel Connector
Bayonet Neill-Concelman |
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Term
Twisted Pair
Increasing Twist Rate - Pros (2) |
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Definition
Reduces Crosstalk
Allows High Transmission rate |
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Term
Twisted Pair
Increasing Twist Rate - Cons (4) |
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Definition
| Increases Attenuation, Propagation, Delay, Cable Cost |
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Term
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Definition
| The gradual loss of a signal through a medium |
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Term
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Definition
| The length of time taken for the quantity of interest to reach its destination |
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Term
| Method to reduce Interference (4) |
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Definition
1. Cables twisted in the opposite direction of pairs
2. Pairs may be physically bonded
3. Plastic spline installed to keep pairs separated
4. Twists per inch mat vary from one pair to another |
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Term
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Definition
RG-8/U
Frozen yellow Garden Hose
10Base5
9.8mm |
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Term
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Definition
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