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25 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 of retina of the eye.
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cable modem
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a device that uses coaxial cable to sened 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 channel
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link from one computer to another through which dara can be transmitted
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digital subscriber line (DSL)
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an interent connection technology that providess 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 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 bufferbetween and internal network and the internet to prevent unortharized access.
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hacker
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expert computer user who invades someone elses computer for either 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 at a communication tool
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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 facilitates the transmittion 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 arcutechure in which all the computers on a network are equal and 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 interent.
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public switched telephone network (PSTN)
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the worlds connection of interconnected commercial and government owned voice-oriented systems
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router
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a device that that directs traffic on a network by dividing data into smaller packets that travel by different routes and then are reassembled at destination .
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server
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a computer that handles request data, email, file transfers and other network services from other computer (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 mega bites 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 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 up to 7 mbps to your cell phone, home computer, or car. stand for a worldwide interoperablitity for microwave access.
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wireless internet server provider (WISP)
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an ISP that provides connection speeds morethan 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 variations of a LAN that uses no physical wires
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