Theintranet

syasya0905
Note by syasya0905, updated more than 1 year ago
syasya0905
Created by syasya0905 about 5 years ago
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my notes on computer science
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Broadband and dial up Methods of connecting a computer system offered by ISPs(Internet Service Providers)-DIAL Up-Broadband

Recent Developments WIKI-type of software which allows a user to create and edit web pages using any available web browser-support the use of hyperlinks and have a very simple syntax (rules) for the page creation.Social networking sites-designed to promote the building of online communication who in general share the same interest and activities-aim at younger generation who like share photos, videos etc...- users can add friends, post message, update profilesBlogs- a personal Internet journals where writer (blogger) can write some text about a topic or person-no training neededWeb Browser-Softwares that allow a user to display and interact with web pages and files from the internet-software interprets the coding langguage of the websites and displays the translation instead of showing the actual coding-user can launch a web browser by clicking on appropriate icon. no need to know the commands requiredDigital media sharing websites-allows users to upload video files and other multimedia files for other users to access as required-Video files: stored on server. allows free access to anyone or require a code before videos can be viewedInternet Service Providers(ISPS)-companies that provide user access to the Internet- customer pay monthly fee for this service-once sign up to ISP, an account is set up.user name and password created-ISP monitor Internet usage when users access internetPodcasts-series of media files (audio and video) that are released at regular intervals and downloaded to a user's computer-stored and maintained centrally -listener or viewer employ appropriate application software to access files, check for updates and download new files in given seriesTagging- of bookmarking where a user tags a web page or photograph using some text to describe its contents-can be viewed by anyoneBit (data ) streaming-refers to data sent in a compressed form over the Internet that can be displayed in real time on the user's computer-downloaded data is sent to buffer; it's not saved on the user's computer. needs to be streamed every time video or audio file is to be accessed-can either be true(real time) or on-demand ->true when information is sent straight to user's computer. no need to save it first on website server. ->on-demand when files are first saved on hard disk on the web server and -need to have media player software that uncompresses the data and then sent it to buffer before play back

Chat rooms and instant messaging-allow communications in real timeChat room-to register,user must choose a username and password that is use when logging in-user will be alerted on the list of people online-Lurking ->enter chat room to read messages but not contribute-users are advice to be carful of language and facilities usedInstant Messaging-similar to chat room but is one-to-one basis-more private-faster than e-mailInteractive maps -shows 3 options *road maps *satellite views -> bit of misnomer since it can only pick up something about 2 square metres on the earth surface *hybrid of both the above-Features * zoom in zoom out * pins to show exact location * ability to get detailed directionsIntranet-INTernal Restricted Access to NEtwork- a computer network designed to work within the company only and is not available to users outside the company

Intranet vs Internet-Term for Intranet is INTernal Restricted Access NETwork while the term for Internet is INTernational NETwork-Intranet sit behind a firewall to further enhance their security-The Internet can be accessed anywhere while Intranet can only be accessed by computers within the organisational structure

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