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26 Cards in this Set
- Front
- Back
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biometeric security measures
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a technique or device that examines a fingerprint, 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 recive data.
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client
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a computer that uses 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 networkacts as a server.
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communication channels
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link from one computer to another through which data can be transfered.
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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 bandwith over ordinary copper telephone wires.
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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 periphial devices and is then forwarded in one or more directions to other computers or 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 network 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 peronal computers, workstations, and other devices, such as printer or scanners, within a confined space, such as an office building.
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modem
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communications hardware 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 in 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,email, file transfers, and other network services from other computers.
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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 digitalized voice channels.
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wide area network (WAN)
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computer network that covers a large geographical area. Most WANs are made up of several connected LANs.
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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 cellphone, 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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