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1/2/13 WD2 SA
Question | Answer |
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network | A group of two or more computers connected so they can communicate with one another. |
node | Any entity on a network that can be managed, such as a system, repeater, router, gateway, switch or firewall. A computer or other addressable device attached to a network; a host |
client | An individual computer connected to a network. Also, a system or application (such as a Web browser or user agent) that requests a service from another computer (the server) and is used to access files or documents. |
server | A computer in a network that manages the network resources and provides, or serves, information to clients. |
local area network (LAN) | group of computers connected within a confined geographic area. |
wide area network(WAN) | A group of computers connected over an expansive geographic area so their users can share files and services. |
internet | a world wide network of interconnected networks |
advanced research projects agency(ARPA) | US department of defense agency that created the first global computer network |
advanced research projects agency (ARPANET) | A computer network, funded by ARPA, that served as the basis for early networking research and was the backbone during the development of the Internet |
National Science foundation (NSF) | An independent agency of the U.S. government that promotes the advancement of science and engineering |
backbone | the highest level in the computer network hierarchy to which smaller networks typically connect |
gateway | a node on a network that serves as a portal to other networks |
world wide web (WWW) | a set of software program that enables users to access resources on the Internet via hypertext documents |
hypertext link | Highlighted or underlined text in a Web page that, when clicked, links the user to another location or Web page. |
web page | An HTML document containing one or more elements (text, images, hyperlinks) that can be linked to or from other HTML pages |
web site | A World Wide Web server and its content. includes multiple Web pages |
web browser | A software application that enables users to access and view Web pages on the Internet |
protocol/internet protocol (TCP/IP) | A suite of protocols that turns data into blocks of information called packets, which are then sent across the Internet. The standard protocol used by the Internet |
packet | Data processed by protocols so it can be sent across a network |
router | A device that routes packets between networks based on network-layer addresses; determines the best path across a network. Also used to connect separate LANs to form a WAN |