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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, or the 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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ditigal subscriber line (dsl)
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An internet connection technology that provides for the transfer of information to a computer at a high- peed 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 an 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 significants of being able to.
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hub
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a junction where inforamtin 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 communcation tool.
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intranet
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a network designed for the eclusive use of comper 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 hardware device that facilitaties 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 aqnd there is no computer designed as a 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 worlds 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 tranfers, 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 specail functions for connectingn computers and other deviced into a network
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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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T-1
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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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WiMAX
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A recent wireless techn.that can deliver maximum speeds of up to 7 Mbps to your cell phones, 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 connetcion speeds more than 30 times faster thandail-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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