domingo, 19 de febrero de 2012

PROJECT BLOG

WWW vs Internet 


*protocol is a system of rules that define how something needs to be done. in computers, a protocol is a method used for transmit data, and the establish comunication of different divices .  they use a method that have a list of  numbers that makes each one different from the others, this methos s called the IP.





Http:
it means "
.hypertext transfer protocol"  it is the set of rules for transfering files, like graphs, pictures, images, sounds, music, videos etc... in the world wide web.


https: is the same as "hypertext transfer protocol"but the difference is that this has security. connections are  used for payment transactions on the world wide web.



web browser:   it is a program that uses internet to search he information, the principal web browsers are called google chrome, safari, mozilla firefox,opera and internet explorer.


HTML: it means "HyperText Markup Language",is the predominant markup language for developing web pages. It is used to describe the content in the text          and in the document.






what is he difference between the internet and the world wide web?


diference between internet an world wide web is that  Internet is a connection 
between the computers, With the intenet we can use programs.and  The World Wide Web are all the web pages the people can enter and are save on a server. If the internet is not working, the web page would not appear.


Search Engines: the search engines are not web browsers like all people think, they are the pages you use to search information you need. there are  a lot of search engines, google is the principal. in google they use mini programs called spiders, and this programs are encharged to  look for the  info you need, and orgaize the pages consisting in their page rank.



GOOGLE: 
 when we go to google you are not searching the web, you see google index, an index is a list of pages, it is made by programs called spiders yhat follow the links  in the pages. when we search in google, they know what page you sre needing by lloking and searching the index to fuind the pages that contains the searching terms. google search in the pages how many times is the search terms. google index is not the web, it is only a copy of the page. 




Googlebots:


Googlebot is crawling robot, also called "spider" Crawling is the process by which Googlebot discovers new pages and add them to the Google index.




page rank: 
 Is how the web pages are classified on the Internet depending on the information they use and the link the other pages use. ggle use pagerank so people can know what page has the exact info you are looking for. wikipedia is the page with more pagerank, wikipedia has lots and lots of links. 






Ad-sens/ Ad-words: Is a part of Google specialized on the online advertisement. it forms a web page were users can enter and look for advertisement. You can get contact with a people that is selling something and by it in the internet.






















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