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A presentation for school

Javier Molina

on 8 January 2013

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Transcript of Internet

Changing the world The World Wide Web Internet How it works No one owns the internet and it is not controlled by anybody nowadays. What is it? It also links to other documents, graphics and audio files Web 2.0 bases itself in the services provided by the World Wide Web like email or search engines, incorporating contributions of the proper users, which modify the contents in the web The main change between the Web 1.0 and the web 2.0 is that information used to be mainly in the servers provided by the server, whilst now, this information is uploaded by the client to the server The Internet is a massive network of networks, a networking infrastructure. It connects millions of computers together globally What is the internet? What is its use? In its network, any user can communicate with another as long as both are connected to the internet December 31, 2011 there was an estimated 2,267,233,742 Internet users worldwide. This represents 32.7% of the world's population. A system of Internet servers that support specially formatted documents. The documents are formatted in a markup language called HTML (HyperText Markup Language) Applications called Web browsers that help to access the World Wide Web (Firefox, Chrome...). Web pages are linked with each other via hyperlinks Web 2.0 What is the difference between WWW and Internet? It is a way of accessing information over the medium of the Internet The Web uses the HTTP protocol, only one of the languages spoken over the Internet to transmit data It is just one of the ways that information can be disseminated over the Internet. The Web is just a portion of the Internet Internet is the infrastructure that holds the contents and services globally Major features of Web 2.0 include social networking sites, user created web sites, self-publishing platforms, tagging, and social bookmarking Users can provide data that is on a source and exercise some control over that data (edit it, restrict something...) Applications of Web 2.0 Wikis Blogs Photo and video sharing services RSS and podcast Geolocation services Long distance teaching Online applications P2P networks Wikis and Blogs Wikis Both wikis and blogs are used by consumers to share their own information Wikis show articles that can be later developed. The main point of using wikis is to have information fastly, quickly and easily editable. The term wiki comes from Hawaian in which "Wiki, wiki, wiki" means fast! What is Web 2.0? Any Examples? So, what is the difference between Web 1.0 and 2.0? Photo and video sharing services These include sites like Instagram, Youtube, Vimeo, Photobucket... A video hosting service allows individuals to upload video clips to an Internet website, which is then stored on its server Photo sharing is the publishing or transfer of a user's digital photos online through photo galleries managed by users (photoblogs) or through social networking Users can choose if they want to let others download the photo or not RSS and Podcast A podcast is an episode of audio normally radio series, video or even PDF which is normally viewed from a portable media player The word podcast comes from "broadcast" and "iPod" Podcasts come normally from a web feed. A "podcatcher" is a special software that checks for updates in the web feed and downloads new episodes RSS (Really Simple Syndication/ Rich Site Summary) is the name for an automatically update news feed A standarized format permits RSS information to be viewed by many other programs Difference between RSS and Podcast A podcast normally refers to a RSS feed Podcast normally refers to a RSS feed with audio content Blogs A blog (web log) is a site on the WWW which consists of various entries in cronological order The Internet and mobile technologies Geolocation services Services such as google maps are alternatives to GPS These location services also permit tracking of laptops, tablets or even humans and pets! They use IP addresses and nearby cellular towers Some companies use GPS satellites combined with this system to get a more efficient location Long distance teaching Long distance teaching permits teaching students which are not present there. It is mainly used in degrees and postgraduate courses. It is not very popular in primary, secondary and A level Thanks to the internet, the percentage of undergraduates in at least one distance education class expanded from 8 percent to 20 percent Normally combines online lessons, presence lessons and reading documents which the teacher delivers by Email It is also used in studies like music and language courses Online applications An online application is an application accesed by the user over the internet These include online transaction applications, office software, online calendar... Benefits They require no/little disk space They are friendly with most platforms (Linux, Mac, Windows...) P2P Networks Cloud storage Cloud storage In online storage, data is stored in large data centers operated by the host company Examples of this are Dropbox, Google Drive and iCloud It is accessed by a web application interface P2P networks connect various computers and allow them to interchange files P2P networks do not need to have a server, they only need Internet connection and P2P software (BearShare, Limewire) P2P software allows you to download files on other computers on the network, and allows the other computers on the network to download from So, in P2P networks, computers act as servers and as clients Social networking Web browsing and applications Cloud storage Voice over IP
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