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Homework_2 Version 0
👤 Author: by 951970312qqcom 2018-03-21 15:42:52
Describe how to access the Internet.What are the provides?Define browsers and discuss URLs,HTML,javascript,AJAX,applets,and mobile browsers.

There are two ways to access the Internet,one of which is through an Internet service provider.The most widely used commercial Internet service provides use telephone lines,and lor wireless connections.Some of the best-known provides are Verizon,AT&T,Sprint,and T-Mobile.And Today it is common to access the Internet from a variety of mobile devices like cell phones.
-Browsers are programs that provide access to Web resources.This software connects you to remote computer,opens and  transfers files,displays text,images and multimedia,and provide in one tool an uncomplicated interface to the Internet and Web  documents.

-For browser to connect to resources,the location or address of the resources must be specified.These address are called uniform  resource locators(URLs).

-Once the browser has connected to the Web site,a document file is sent back to your computer.This document typically contains  Hypertext Markup Language(HTML).

-Web pages also contain special programming to add interest and activity.A language called javascript is often used to trigger  simple interactive features,such as opening new browser 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 sites that respond quickly,like traditional desktop application software.

-applets are written in the Java Programming language.These program can be downloaded quickly and run by most browser.

-Special browsers called mobile browsers are designed to run on these portable devices.Unlike a traditional Web browsers are  designed to run these portable devices

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