homework2

Describe how to access the Internet. What are the providers? Define browsers and discuss URLs, HTML, javascript, AJAX, applets, and mobile browsers.

 

The most common way to access the internet is through an internet service provider.The most widely used commercial internet service providers use telephone line,cable,and wireless connections.Some of the best-known are Version,AT&T,Sprint,and T-Mobile.Browers are programs that provide access to web resource.

For browsers to connect to resources,the location or address of the resources must be specified.These addresses are called uniform resource locators(URL).

Once browser has connected to the web site,a document file is sent back to your computer. The document typically contains Hypertext Markup Language(HTML). The browser interprets the HTML formatting instructions and display the document as a web page.

A language called javascript is often used to trigger simple simple interactive features,such as opening new browers windows and checking information entered in online forms. An advanced use of javascript called AJAX can be found on many interactive sites.This technology is used to create interactive Web site that respond quickly,like traditional desktop application software.applets are written in the java programming language.