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67 Cards in this Set
- Front
- Back
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A networking technology that parcels information into 8-byte cells, allowing data to be transmitted between computers from different vendors at any speed.
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Asynchronous Transfer Mode (ATM)
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Part of a network handling the major traffic and providing the primary path for traffic flowing to or from other networks.
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Backbone
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The capacity of a communications channel as measured by the difference between the highest and lowest frequencies that can be transmitted by that channel.
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Bandwidth
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High-speed transmission technology. Also designates a single communications medium that can transmit multiple channels of data simultaneously.
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Broadband
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Network topology linking a number of computers by a single circuit with all messages broadcast to the entire network.
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Bus Network
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Modem designed to operate over cable TV lines to provide high-speed access to the Web or corporate intranets.
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Cable Modem
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An interconnected set of local area networks in a limited geographical area such as a college or corporate campus.
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Campus area Network (CAN)
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Live, interactive conversations over a public network.
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Chat
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A transmission medium consisting of thickly insulated copper wire; can transmit large volumes of data quickly.
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Coaxial Cable
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The ability of computers and computer-based devices to communicate with each other and share information in a meaningful way without human intervention.
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Connectivity
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Technology for boosting transmission capacity of optical fiber by using many different wavelengths to carry separate streams of data over the same fiber strand at the same time.
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Dense Wave Division Multiplexing (DWDM)
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A group of technologies providing high-capacity transmission over existing copper telephone lines.
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Digital Subscriber Line (DSL)
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English-like name that corresponds to the unique 32-bit numeric Internet Protocol (IP) address for each computer connected to the Internet
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Domain Name
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A hierarchical system of servers maintaining a database enabling the conversion of domain names to their numeric IP addresses.
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Domain Name System (DNS)
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The computer-to-computer exchange of messages.
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E mail (e-mail)
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A fast, light, and durable transmission medium consisting of thin strands of clear glass fiber bound into cables. Data are transmitted as light pulses.
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Fiber-Optic Cable
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Tool for retrieving and transferring files from a remote computer.
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File Transfer Protocol (FTP)
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Hardware and software placed between an organization's internal network and an external network to prevent outsiders from invading private networks.
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Firewall
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A shared network service technology that packages data into bundles for transmission but does not use error-correction routines. Cheaper and faster than packet switching.
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Frame Relay
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Software that provides functions and services that support the collaborative activities of work groups.
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Groupware
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Measure of frequency of electrical impulses per second, with 1 Hertz equivalent to 1 cycle per second.
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Hertz
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A World Wide Web text and graphical screen display that welcomes the user and explains the organization that has established the page.
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Home Page
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Very simple devices that connect network components, sending a packet of data to all other connected devices.
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Hubs
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The communications standard used to transfer pages on the Web. Defines how messages are formatted and transmitted.
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Hypertext Transport Protocol
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Device that has been customized to perform a few specialized computing tasks well with minimal user effort.
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Information Appliance
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Chat service that allows participants to create their own private chat channels so that a person can be alerted whenever someone on his or her private list is on-line to initiate a chat session with that particular individual.
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Instant Messaging
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International standard for transmitting voice, video, image, and data to support a wide range of service over the public telephone lines.
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Integrated Services Digital Network (ISDN)
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Four-part numeric address indicating a unique computer location on the Internet.
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Internet Protocol (IP) Address
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A commercial organization with a permanent connection to the Internet that sells temporary connections to subscribers.
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Internet Service Provider (ISP)
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Technologies that use the Internet Protocol's packet-switched connections for voice service.
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Internet Telephony
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Research network with new protocols and transmission speeds that provides an infrastructure for supporting high-bandwidth Internet applications.
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Internet2
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The linking of separate networks, each of which retains its own identity, into an interconnected network.
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Internetworking
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On-line discussion groups using e-mail broadcast from mailing list servers.
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LISTSERV
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A telecommunications network that requires its own dedicated channels and that encompasses a limited distance, usually one building or several buildings in close proximity.
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Local Area Network (LAN)
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Network that spans a metropolitan area, usually a city and its major suburbs. Its geographic scope falls between a WAN and a LAN.
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Metropolitan Area Network (MAN)
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A device for translating a computer's digital signals into analog form for transmission over ordinary telephone lines, or for translating analog signals back into digital form for reception by a computer.
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Modem
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Transmission of data to a selected group of recipients.
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Multicasting
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Ability of a single communications channel to carry data transmissions from multiple sources simultaneously.
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Multiplexing
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Expansion card inserted into a computer to enable it to connect to a network.
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Network Interface Card (NIC)
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Special software that routes and manages communications on the network and coordinates network resources.
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Network Operating system (NOS)
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Less widely used network connectivity model developed by International Standards Organization for linking different types of computers and networks.
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Open Systems Interconnect (OSI)
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High-speed networking technologies for transmitting data in the form of light pulses.
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Optical Network
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Technology that breaks messages into small, fixed bundles of data and routes them in the most economical way through any available communications channel.
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Packet Switching
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Network architecture that gives equal power to all computers on the network; used primarily in small networks.
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Peer-to-Peer
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A set of rules and procedures that govern transmission between the components in a network.
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Protocol
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Method of obtaining relevant information on networks by having a computer broadcast information directly to the user based on prespecified interests.
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"Push" Technology
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A network topology in which all computers are linked by a closed loop in a manner that passes data in one direction from one computer to another.
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Ring Network
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Specialized communications processor that forwards packets of data from one network to another network.
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Router
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A tool for locating specific sites or information on the Internet.
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Search Engine
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Payment to a search service to display a sponsored link to a company's Web site as a way of advertising that company.
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Search-Based Advertising
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Collaborative effort led by the World Wide Web Consortium to make Web searching more efficient by reducing the amount of human involvement in searching for and processing web information.
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Semantic Web
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Software with varying levels of built-in intelligence to help electronic commerce shoppers locate and evaluate products or service they might wish to purchase.
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Shopping Bot
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A network topology in which all computers and other devices are connected to a central host computer. All communications between network devices must pass through the host computer.
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Star Network
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Device to connect network components that has more intelligence than a hub and can filter and forward data to a specified destination.
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Switch
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High-speed data lines leased from communications providers, such as T-1 lines (with a transmission capacity of 1.544 Mbps).
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T lines
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Group collaboration software that is customized for teamwork.
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Teamware
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Network tool that allows someone to log on to one computer system while doing work on another.
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Telnet
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The way in which the components of a network are connected.
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Topology
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Dominant model for achieving connectivity among different networks. Provides a universally agree-on method for breaking up digital messages into packets, routing them to the proper addresses, and then reassembling them into coherent messages.
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Transmission Control Protocol/Internet Protocol (TCP/IP)
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A transmission medium consisting of pairs of twisted copper wires; used to transmit analog phone conversations but can be used for data transmission.
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Twisted Wire
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System combining voice messages, e-mail, and fax so that they can all be obtained from a single system.
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Unified Messaging
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The address of a specific resource on the Internet.
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Uniform Resource Locator (URL)
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Forums in which people share information and ideas on a defined topic through large electronic bulletin boards where anyone can post messages on the topic for others to see and to which others can respond.
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Usenet
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A secure connection between two points across the Internet to transmit corporate data. Provides a low-cost alternative to a private network.
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Virtual Private Network (VPN)
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Facilities for managing the delivery of voice information using the Internet Protocol (IP).
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Voice over IP (VoIP)
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The person in charge of an organization's Web site.
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Webmaster
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Telecommunications network that spans a large geographical distance. May consist of a variety of cable, satellite, and microwave technologies.
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Wide Area Network (WAN)
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