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A+ Ch06
Data Communications
48
Computer Science
12th Grade
11/03/2008

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Cards

Term
Router
Definition
Connectivity device used to seperate or join different network segments together.
Term
Bandwidth
Definition
The meda's total ability to carry data at a given distance
Term
WPA
Definition
Advanced encryption used in wireless networks.
Term
Hotspot
Definition
Range of transmission around teh access point.
Term
Bus
Definition
Topology is which the nodes, or stations, of the network connect to a central communication link, or backbone.
Term
Bridge
Definition
Connectivity device that connects two local area networks, or two segments of the LAN.
Term
Appletalk
Definition
Protocol used in Apple Network, routable.
Term
Half-Duplex
Definition
Data can travel in both directions, but only one at a time.
Term
Full-Duplex
Definition
Data can travel in both directions at the same time.
Term
Simplex
Definition
Data can travel in only one direction.
Term
Single Mode Fiber
Definition
Light travels in one path from transmitter to receiver, longer distances, more expensive.
Term
Switch
Definition
A relatively complicated connectivity device used to connect multiple nodes together. Dedicated bandwidth.
Term
Bluetooth
Definition
Wireless specification used to connect devices such as PDA's, cell phones, digital cameras, PC's, notebooks, cars, and printers
Term
RG-59
Definition
Cable is widely used for CATV and video services
Term
RG-6
Definition
Cable type preferred for satellite antenna's and HDTV receivers.
Term
Crosstalk
Definition
When data wires lie in parallel, data jumps from wire to wire, corrupting data.
Term
CAT5
Definition
UTP, Rated for 100Mbps transmission, can travel 100 meters
Term
Thicknet
Definition
RG-8, 10Base5, 500 Meters
Term
Thinnet
Definition
RG-58, 10Base2, 185 meters
Term
Plenum Cable
Definition
Cables suitable for use in ducts because they have low smoke producing characteristics
Term
Straight-Through Cable
Definition
Cable used to connect two unlike devices together
Term
Client-Server Network
Definition
Control of a Network where workstations operate in conjunction with a master computer.
Term
802.11b
Definition
Wireless specification capable of transmitting at 11 Mbps at a frequency of 2.4GHz
Term
Class A
Definition
IP address class range from 001-126. Supports nearly 17 million nodes.
Term
Peer to Peer Network
Definition
Control of a network where each computer is equal to the other units on the network.
Term
Crossover Cable
Definition
Cable used to connect two like devices together
Term
802.11g
Definition
Wireless specification capable of transmitting at 54Mbps at a frequency of 2.4Ghz
Term
Class C
Definition
IP address class range from 192-223. Supports nearly 254 nodes.
Term
Access Point
Definition
A device used in networks to connect wireless devices together.
Term
Topology
Definition
Hardware connection method that describes the arrangement of a network.
Term
802.11a
Definition
Wireless specification capable of transmitting at 54 Mbps at a frequency of 5.0 GHz
Term
WEP
Definition
Basic encryption used in wireless networks.
Term
Class B
Definition
IP address class range from 128-191. Supports nearly 65 thousand nodes.
Term
LAN
Definition
sustems designed to connect computers together in relatively close proximity.
Term
Types of FO connectors
Definition
ST, SC, LC, MT-RG
Term
NWLink, IPX/SPX
Definition
Protocol used in Novell networks, Routable.
Term
NetBEUI
Definition
Fast, efficient protocol, suitable for use on smaller networks. Not Routable.
Term
Protocol
Definition
A set of rules that governs how communications are conducted across a network
Term
Mesh
Definition
Topology in which each node has a direct physical connection to all the other nodes in the network.
Term
Ring
Definition
Topology in which all devices are connected together in the shape of a closed loop.
Term
Hub
Definition
A relatively simple connectivity device used to connect multiple nodes together. Shared Bandwidth.
Term
Star
Definition
Topology in which all the links eventually lead back to a central unit, or focused point.
Term
Multi-Mode Fiber
Definition
Light travels in many paths from the transmitter to the receiver, cheaper, shorter distances.
Term
Attenuation
Definition
A measure of how much signal loss occurs as the information moves across the medium.
Term
MAC Address Table
Definition
Address Table that keeps track of devices attached to the switch.
Term
TCP/IP
Definition
Protocol used by the internet. Most OS's support it. Routable.
Term
WAN
Definition
systems designed to connect computers together over large geographical areas.
Term
ISP
Definition
company that assigns an IP address to it's customers.
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