Chapter 24 And 25

Front 1

biometric security measures

Back 1

a technique or device that examines a fingerprint, voice pattern, or the iris or retina of the eye.

Front 2

cable modem

Back 2

a device that uses coacial cable to send and recieve data

Front 3

client

Back 3

a conputer that uses the services of another program

Front 4

client/server network

Back 4

computer configuration in which one or more computers on the network acts as a server

Front 5

communication channels

Back 5

link from another computer to another throguh whcih data can be transmitted

Front 6

digital subscriber line

Back 6

an Internet connection technology that provides for the transfer of information to a computer at a high-speed bandwith over ordinary copper telephone

Front 7

extranet

Back 7

a network configuration that allows selected outside organizations to access internal information systems

Front 8

firewall

Back 8

a combination of hardware and software that creates a buffer between an internal network and the Internet to prevent unauthorized access.

Front 9

hacker

Back 9

expert computer user who invades someone else's computer either for personal gain or simply for the satisfaction of being able to do it.

Front 10

hub

Back 10

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

Front 11

internet

Back 11

the largest network used as a communication tool

Front 12

intranet

Back 12

a network designed for the exclkusive use of somputer users within an organization that cannot be accesses by users outside the organization

Front 13

local area network

Back 13

a series of connected personal computers, workstations, and other devices such as printers or scanners, within a confined space, such as an office

Front 14

modem

Back 14

communications hardware device that facilitates the transmission of data.

Front 15

node

Back 15

a deivce on a network

Front 16

peer-to-peer network

Back 16

computer architecture in whcih all of the computers on a network are equal and there is no computer designated as the server

Front 17

proxy server

Back 17

a server that acts as in intermediary between a user and internet

Front 18

public swithced telephone network

Back 18

the worlds collection of interconnected commerical and government owned voice-oriented systems

Front 19

router

Back 19

a device that directs traffic on a network by dividing data into smaller packets that travel by different rputes and then are reassembled at their destination

Front 20

server

Back 20

a computer that handles requests for data, email, file transfers, and other network services

Front 21

server operation system

Back 21

high-end programs designed to provide network conterol and include special functions for connecting computers and other devices into a network

Front 22

t-I line

Back 22

a type of fiber-optic telephone line that can transmit up to 1.544 megabites per second or can be used to transmit 24 digitized channels

Front 23

wide area network

Back 23

computer network that covers a large geographical area. most WANs arte made uop of several conenection LANs

Front 24

WiMax

Back 24

a recent wireless technology that can deliver maximum speeds of up to 7 mpbs to your cell phone, home phone, or car

Front 25

wireless internet service provider

Back 25

an ISP that provides connection speeds more than 30 times faster than dial-up conection

Front 26

wireless LAN

Back 26

VARIATION OF lan THAT uses no physical wires.

Front 27

address book

Back 27

part of most e-mail programs; used to keep a list of contacts and their e-mail addresses

Front 28

archiving

Back 28

to save or transfer data to a storage device or folder for the purpose of saving space or organizing the data

Front 29

attachment

Back 29

a document, image, figure, or other file that you can attach to an e-mail message

Front 30

distribution list

Back 30

a list of e-mail addresses you can use to send the same message to a group

Front 31

electronic mail

Back 31

transmission of electronic mesages over networks

Front 32

e-mail address

Back 32

someones username or identification of their e-mail

Front 33

instant messaging

Back 33

a form of electronic communication that allows you to send and recieve text messages in 'real time' from friends and collegues who are currently online.

Front 34

mailing list

Back 34

see distribution list

Front 35

packets

Back 35

units of data sent accross a network

Front 36

signature

Back 36

text or graphics added to the end of outgoing e-mail messages

Front 37

spam

Back 37

unsolicated commercial e-mail that is sent to many people att he same time to rpmote products or services

Front 38

text messaging

Back 38

using cell phone or other mobile device to send and recieve written messages.

Front 39

user agent

Back 39

a software applicaion installed on the local PC, network, or web such as e-mail

Front 40

window mail

Back 40

e-mail software provided with Windows Vista