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How Web Browsers Work

Whenever the internet is used, whoever uses it is using a web browser. But what is a web browser? A web browser is a client program used to access and display documents from the World Wide Web (itep, 2003). The World Wide Web, or the Web for short, is a world full of information available at the click of a mouse. All that is needed to use it is an internet connection, a Web browser like Internet Explorer or Netscape Navigator and most importantly a computer to use it all. When the Web browser is running it basically finds then displays the page that is trying to be accessed. The basic function of the Web browser is to interpret the programming language that is being used; usually Hypertext Markup Language or HTML for short, and that is being displayed on the computer screen (public.web.cern.ch, 2003). HTML is the main programming code that is used to create the basic outlay and core of a Web page (itep, 2003). There are many different Web browsers available but the two most widely used are Microsoft Internet Explorer and Netscape Navigator (learnthenet, 2003). They are both available for download at their respected company’s website. Microsoft Internet Explorer is a graphical type web browser which allows the user to access and


● The “Display Window” is the part of the Web browser that displays the translated information of a Web page onto the computer screen itself (itep, 2003). This window acts just like any other window of a Macintosh or Windows operating system. It has a close button, a maximize button (which converts to the restore button once clicked) and a minimize button. It can also be resized and can also be moved around the screen (gactr.uga.edu, 2003).

● The access indicator is the small graphic in the upper-right hand corner of the browser that animates when the browser is processing information (learnthenet, 2003).

● The Menu Bar is located at the top of the browser and offers a variety of things that can be selected from to change or affect a Web browser or a Web page. A user can customize the size of the browser window, change the text displayed in both font size and the font style (learnthenet, 2003). Other things that can be changed include colors, toolbar appearance and viewer programs. For example is that the text size can be changed so that the Web page or Web pages can be read easier. Another is that a user can indicate which helper application they want to use as the default application for when they click on a hyperlink. Some options can be changed by using the buttons in the toolbar but others have to be changed by using the menu bar (phdsystems, 2003).

Web browsers use Uniform Resource Locators or URLs to access Web pages. A URL is an address that tells the browser where to look for the host server. It follows a format like this: “protocol://host.domain.first-level domain/path/filename.ext” or “protocol:host.domain.first-level domain”. An example of a URL would be http://www.microsoft.com/windows/index.html. Thus according to the format, http:// would be the protocol, www would be the host that is being accessed, Microsoft is the domain of the address and com would be the first-level domain of the address. The path index.html tells the browser to look for the file named index.html that is located in the windows directory to display on the browser’s window. The user can access any page that has a URL, so long as it is put in correctly (gactr.uga.edu, 2003). And the server which the information is located can be anywhere, across the street, across the country or even across the world! The browser just downloads the files into the cache then displays them onto the user’s computer screen (learnthenet, 2003). This allows the Web to negotiate formats between client and server makes it possible to ship any type of document from a server to a client as long as the client has the appropriate software to handle the format. That allows for audio, video and pretty much anything else accessible without the need for a single application to be able to interpret all of the programs (public.web.cern.ch, 2003).

Sometimes a URL when trying to access a Web page, the browser will fail or have trouble retrieving a file. One of the most common, if not the most common, mistakes is misspelling part of the URL address. URLs cannot contain blank spaces, and should end with either a file a name or a back slash (/). Most Web browsers will automatically put in the back slash or protocol (http://, https://, etc.) if it is needed. Sometimes the browser will report that there is an error related to a Web server’s domain name. This means that there is a temporary problem with the name server used by the Internet Service Provider or ISP for short. Web browsers’ rely on the specified computer’s TCP/IP software to translate domain names into a numerical form more suitable for the limited understanding of network routers. And it’s

Some topics in this essay:
Netscape Navigator, Internet Explorer, Locators URLs, Microsoft Netscape, Menu Bar, Web Browser, URL URL, Wide Web, Sometimes URL, ActiveX Web, web page, web browser, learnthenet 2003, 2003 ●, learnthenet 2003 ●, internet explorer, itep 2003, web pages, web browsers, allows user, page document, web page document, 2003 web browsers, world wide web, access web page,

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Approximate Word count = 2476
Approximate Pages = 10 (250 words per page double spaced)


  

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