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26 Cards in this Set
- Front
- Back
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biometric security measures
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-refers to the identification of humans by their characteristics and traits. used in computer science as a form of identification and access control
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cable modem
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-device that uses coaxil cable to send and recieve data
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client
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-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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-internet connection technology that provides for the trandfer of information to a computer at a high-speed bandwidth over ordianry copper telephone lines
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extrant
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-netwrok configuration that allows selected outsidce organizations to access interl information systems
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firewall
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-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 someones 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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-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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-largest network used as a communicaton tool
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intranet
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-network designed for the exclusive use of computer users within an organization that cannot be accessed by users aoutside the organization
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local area network
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-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 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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-server that acts as an intermediary between a user and the internet
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public switched telephone network
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-the world's collection of interconnected commercial and the governmentowned voice-oriented systems
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router
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-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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-computer that handles requestes 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 digitalized voice channels
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wide area network
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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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wireless internet service provider
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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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wiMAX
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telecommunications protocol that provides fixed and fully mobile internet
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