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Tomorrow's Technology and You
Chapter 8: Networking and Digital Communication
10
Computer Science
Undergraduate 2
11/19/2011

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Term
Local Area Network (LAN)
Definition
A network in which the computers are physically close to each other, usually in the same building.
Term
Twisted Pair
Definition
The most common type of LAN cable. It contains copper wires that resemble those in standard telephone cables.
Term
Ethernet
Definition
A popular networking architecture developed in the 1970s at Xerox PARC; it has become an industry standard.
Term
Power-line Network
Definition
A network that uses power lines.
Term
Wireless Network
Definition
Each node has a tiny radio transmitter so it can send and receive data through the air rather than through cables.
Term
Wide Area Network (WAN)
Definition
A Network of LANs that extends over a long distance.
Term
Analog Signal
Definition
A continuous wave, similar to the sound waves that make up our phone conversations.
Term
Dial-Up Connection
Definition
A connection using a modem and standard phone lines.
Term
Mesh Networks
Definition
An alternative to today's networks that rely on centralized routers. The message hops from wireless device to wireless device until it finds its destination.
Term
Routers
Definition
Hardware devices or software programs that route messages as they travel between networks.
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