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26 Cards in this Set
- Front
- Back
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Biometric Security Measures
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A technique or device that examines a fingerprint, voice pattern, or the iris or retina of the eye.
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Cable Modem
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A device that uses coaxial cable to send and recieve data.
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Client
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A computer that uses the services of another program.
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Client/Server Network
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Computer configuration in which one or more computers on the network acts as a server.
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Communication Channels
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Link from one computer to another through which data can be transmitted.
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Digital Subscriber Line (DSL)
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An Internet connection technology that provides for the transfer of information to a computer at a high-speed bandwidth over ordinary copper telephone lines.
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Extranet
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A network configuration that allows selected outside organizations to access internal information systems.
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Firewall
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A combination of hardware and software that creates a buffer between an internal network and the Internet to prevent unauthorized access.
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Hacker
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Expert computer user who invades someone else's computer either for personal gain or simply for the satisfaction of being able to do it.
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Hub
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A junction where information arrives from connected computers or peripheral devices and is then forwarded in one or more directions to other computers and devices.
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Internet
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The largest network used as a communication tool.
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Intranet
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A nerwork designed for the exclusive use of computer users within an organization that cannot be accessed by users outside the organization.
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Local Area Network (LAN)
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A series of connected personal computers, workstations, and other devices, such as printers, or scanners, within a confined space, such as an office building.
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Modem
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Communications harware device that facilitates the transmission of data.
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Node
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A device on the network.
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Peer-to-peer Network
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Computer architecture lin which all of the computers on a network are equal and there is no computer designated as the server.
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Proxy Server
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A server that acts as an intermediary between a user and the Internet.
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Public Switched Telephone Network (PSTN)
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The world's collection of interconnected commercial and government owned voice-oriented systems.
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Router
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A device that directs traffic on a network by dividing data into smaller packets that travel by different routes and then are reassembled at their destination.
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Server
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A computer that handles requests for data, e-mail, file transfers, and other network services from other computers (clients.)
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Server Operating System
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High-end programs designed to provide network control and include special functions for connecting computers and other devices into a network.
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T-1 Line
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A type of fiber-optic telephone line that can transmit up to 1.544 megabits per second or can be used to transmit 24 digitized voice channels.
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Wide Area Network (WAN)
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Computer network that covers a large geographical area. Most WAN's are made up of several connected LAN's.
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WiMAX
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A recent wireless technology that can deliver maximum speeds of up to 7 Mbps to your cell phone, home computer, or car. Stands for Worldwide Interoperability for Microwave Access.
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Wireless Internet Service Provider (WISP)
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An ISP that provides connection speeds more than 30 times faster than dial-up connections-from 384 Kbps to 2.0 Mbps.
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Wireless LAN (WLAN)
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A variation of a LAN that uses no physical wires.
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