Computers: Ch3

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ARPANET
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first computer 1969 (Vinton Cerf & Robert Kahn)
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World Wide Web
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subset of internet, collection or web pages
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Client-Server
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a client asks for data, a computer receives it and returns data to the client
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Internet Protocol (IP) address
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set of numbers assigned to computers to differentiate them on the internet
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Web 2.0
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referred to as the social web (creating and collaborating)
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Email etiquette
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concise and to the point, spell-check and proofread, don’t use abbreviations as in IM
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Weblogs
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a personal log or journal posted on the web
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Vlogs
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blog that uses video as its primary content
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Webcast
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live broadcast of video or audio content over the internet
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Wiki
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collaborative network that allows users to add, remove, or edit content
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Podcast
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series of video or audio files distributed over the internet (often pre-recorded)
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Really Simple Syndication (RSS)
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a format that sends the latest content of a podcast series automatically to an aggregator such as iTunes or Google
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Cache
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storage of all temporary internet files
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E-commerce
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conducting business online (B2B, B2C, C2C)
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E-commerce/Online shopping Safeguards
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use firewall/antivirus, don’t use public WiFi, credit not debit, strong password, make sure websites are secure
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Secure socket layer
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http:// vs https:// (also a small icon of a closed padlock)
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Web browsers
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software that lets you display and interact with text and other media on the web
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Hyperlinks
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specially coded elements that let you jump from one web page to another
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Spider/Web crawler
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spider constantly collects data on web, indexer program organizes data in database, search engine
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Software searches
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indexed data pulling out relevant info
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Subject directory
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a structured outline of websites organized by topics and subtopics
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Uniform Resource Locator (URL)
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grants you initial access to a particular website by typing its unique address
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Domain names
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Ex: www.yahoo.com
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Bookmarks/Favorites
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list of easily retrievable URL’s in your browsers toolbar
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Tagging
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a social network way of bookmarking your favorite website
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Semantic web (web 3.0)
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new web that analyzes everything you’ve previously searched not just the keywords you type in
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Metasearch engine
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searches other search engines
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Boolean operators
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And, Not, Or (also use quotation marks for exact phrase)
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Evaluating web sites
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you evaluate websites by Authority, Bias, Relevance, Audience, and Links

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