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Unit 2 - Data Transfer
Unit 2 - Data Transfer
11
Computer Science
12th Grade
01/20/2014

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Term
Wireless
Definition
WiFi using 802.11 a,b,g,n,AC protocols. Need a Wireless NIC and a Wireless Access Point. Also BlueTooth and InfraRed are wireless, satallite and mobile are also wireless.
Term
Cabled
Definition
Physical cable to carry the data signal. Copper = voltage, Fibre Optic = Laser/LED light to represent 0 or 1.
Term
Topology
Definition
The layout of a network - BUS, RING, STAR, EXTENDED STAR, MESH
Term
Star
Definition
All nodes (work stations)connected to a central device e.g. HUB or a Switch.
Term
Ring
Definition
All nodes (work stations) connected to each other to create a loop.
Term
Bus
Definition
All nodes (work stations) connected to a backbone cable.
Term
WiFi
Definition
Wireless Fidelity, most commenly associated with wirless LAN networks. Also protocol 802.11 a,b,g,n,AC
Term
BlueTooth
Definition
Short distance, small bandwidth. Uses Radio Frequency to transmit data in a PAN network. Protocol 802.15
Term
Fibre Optical
Definition
Cable used in a networ. Fast and very long distances. Used light to transmit data, laser or LED. Alsovery secure
Term
UTP
Definition
Unshielded Twisted Pair - copper cable used to transmit data as a voltage. Fast but can be corrupted by other electrical signals.
Term
Coaxial
Definition
Copper calbe used to transmit data as a voltage. used in older networks, still used by virgin media outside of the home.
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