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40 Cards in this Set
- Front
- Back
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Bandwidth
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–(channel capacity) – is an expression of how much data – text, voice, video and so on – can be sent through a communications channel in a given amount of time.
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Broadband
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very high speed – connections include various kinds of high-speed wired connections (such as coaxial and fiber-optic) as well as DSL, cable and satellite and other wireless connections.
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Internet access provider
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the regional, national or wireless organization or business that connects you to the internet.
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Intergrated services digital network ISDN
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consist of hardware and software that allow voice, cideo, and data to be communicated over traditional copper-wire telephone lines.
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Digital subscriber line – DSL
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uses regular phone lines, a dSL modem, and special technology to transmit data in megabits per second.
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T1 line
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A traditional trunk line that carries 24 normal telephone circuits and has a transmission rate of 1.5 Mbps.
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Cable modem
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connects a personal computer to a cable-TV system that offers an internet connection. (unlike DSL, you don’t need to live near a telephone switching station.
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Communications satellite
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a space satellite, a space station that transmits radio waves called microwaves from earth based stations.
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Wireless network
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which use radio waves to transmit data.
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Wi-Fi
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The name given to any of several standards so called 802.11 standards – set by the institute of electrical and electronic engineers (IEEE) for wireless transmission.
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Access point – hot spot
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a station that sends and receives data to and from a WI-FI network. (hot spots – public access to WI-FI networks)
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Wireless 3G
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stands for 3rd generation is lossely defined as high speed wireless technology that does not need access points because it uses the existing cellphone system.
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Internet service provider
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A local, regional or national organization that provides access to the internet.
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Network access point (NAP)
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A routing computer at a point on the internet where several connections come together.
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Client computer
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a computer requesting data or services.
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Server or host computer
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A central computer supplyinh data or services requested of it.
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Internet backbone
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high speed high capacity transmission lines that use the newest communications technology to transmit data across the internet.
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protocol
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a set of rules - that computers must follow to transmit data electronically.
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TCP/IP - Transmission Control Protocol/Internet Protocol
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The protocol that enables all computers to use data transmitted on the internet.
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PAckets
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fixed length blocks of data for transmission. It allows a message to be split up and its parts sent by separate routes yet still all wind up in the same place.
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Internet Protocol (IP) address
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uniquely identifies every computer and device connected to the internet.
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ICANN
Internet Corp for Assigned Names and Numbers |
It was established to regulate human friendly internet domain names – those addresses ending with .com .org .net and so on, that overlie IP addresses and identify the website type.
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Universal Resource Locator (URL)
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a string of characters that points to a specific piece of information anywhere on the web.
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Hyper Text Transfer Protocol
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The communications rules that allow browers to connect with web servers.
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domain
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A location on the interent, the particular web server. It states the location and the type of address.
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Top level domain
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A three letter extension that describes teh domain type - .gov, .net, .org, .edu, .com, .mil, .int
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Hypertext markup language – HTML
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The set of special instructions (called tags or markups) that are used to specify document structure, formatting, and links to other multimedia documents on the web.
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elements of a web address
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http://www.nps.gove/yose/home.htm
http - Protocol www.nps.gov - domain name yose - directory name or path home.htm - file name and extension |
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Hypertext link, or hyperlinks, hotlinks, or links
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connections to other documents or web pages that contain related infromation, a word or phrase in one document becomes a connection to a document in a different place.
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web portal
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A type of gateway website that functions as an anchor site and offers a broad array of resources and services, online shopping malls, email support, community forums, current news and weather, stock quotes, travel information, and links to other popular subject categories.
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keyword
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the subject word or words of the topic you wish to find.
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search engine
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programs that enable you to ask questions or use keywords to help locate info on the web
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spiders
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also known as crawlers, bots, or agents - that crawl through the WWW following links from one web page to another and indexing the words on that site.
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search services
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organizations that maintain databases eccessible through websites to help you find info on the internet.
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Four web search tools
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Keyword indexes
Subject directories metasearch engines specialized search engines |
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Smart Searching - 3 general strategies.
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just browsing - try subject directory, try a metasearch engine
looking for specific info - Answers.com looking for everything you can find on a subject - same search on several search engines. |
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TAG
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Do it yourself labels that people can put on anything found on the internet, from articles to photos to videos.
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Web-based email
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you send and receive messages by interacting via a browser with a website.
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File transfer protocol FTP
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Software standard for transferring files between computers with different operating systems. You can connect to a remote computer called an FTP site and transfer files to your own microcomputer's hard diesk via TCI?IP over the internet.
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newsgroup
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a giant electronic bulletin board on which users conduct written discussion about a specific subject.
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