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67 Cards in this Set

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