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15 Cards in this Set
- Front
- Back
Acceptable use policy (AUP)
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The policy of a school or employer that specifies the conditions under which its students and/or employees can use their Internet connections. WEB 1.26-1.27, 1.28, 6.09
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Advanced Research Projects Agency (ARPA)
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The U.S. Department of Defense agency that sponsored the early research and development of technologies and systems that later became the Internet. WEB 1.09
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ARPANET
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The wide area network (WAN) created by DARPA in 1969 that grew to become the Internet. WEB 1.11 - also see Defense Advanced Research Projects Agency (DARPA).
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Asymmetric Digital Subscriber Line (ASDL or DSL)
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A new type of digital subscriber line (DSL) that offers transmission speeds ranging from 16 to 640 Kbps from the user to the telephone company and from 1.5 to 9 Mbps from the telephone company to the user. WEB 1.23, 1.25, 1.29-1.30
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Bandwidth
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The amount of data that can travel through a communications circuit in one second. WEB 1.21-1.25
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Because It's Time Network (BITNET)
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A network of IBM mainframe computers at universities founded by the City University of New York. WEB 1.11, 1.12, 1.13
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Bits per second (bps)
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The basic increment in which bandwidth is measured. WEB 1.21
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Cable modem
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A device that converts a computer's digital signals into radio-frequency analog signals that are similar to television transmission signals. The converted signals travel to and from the user's cable company, which maintains a connection to the Internet. WEB 1.29
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Category 1
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A type of twisted-pair cable that telephone companies have used for years to carry voice signals. Category 1 cable is inexpensive and easy to install but transmits information much more slowly than other types of cable. WEB 1.06
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Category 5
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(Cat-5) cable - A type of twisted-pair cable developed specifically for carrying data signals rather than voice signals. Categoty 5 cable is easy to install and carried signals between 10 and 100 times faster than coaxial cable. WEB 1.06-1.07
Cat-5e - enhanced WEB 1.07 |
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Circuit Switching
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A centrally controlled, single-connection method for sending information over a network. WEB 1.10
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Client
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A computer that is connected to another, usually more powerful, computer called a server. The client computer can use the server computer's resources, such as printers, files, or programs. This way of connecting computers is called a client/server network. WEB 1.05, 2.02
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Client/server network
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A way of connecting multiple computers, called client computers, to a main computer, called a server computer. This connection method allows the client computers to share the server computer's resources, such as printers, files, and programs. WEB 1.05-1.06, 2.02
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Coaxial Cable
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An insulated copper wire that is encase in a metal shield and then enclosed in plastic insulation. The signal-carrying wire is completely shielded so it resists electrial interference much better than twisted-pair cable does. Coaxial cable also carries signals about 20 times faster than twisted-pair cable, but it is considerably more expensive. WEB 1.06, 1.07
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Commerce service provider (CSP)
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A firm that purchases Internet access from network access points and sells it to businesses, individuals, and smaller ISPs. A CSP usually offers additional services that help businesses conduct commerce on the Internet. Also known as an Internet service provider (ISP). WEB 1.21
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