07-02-2013, 02:44 PM
Web Technology Question Answers
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Q.1.list and explain the most commonly used web browsers.
Ans.
A Web browser can be defined as an application software or program designed to enable user to access retrieve and view documents and other resource on the internet. A browser is an application which provider a window to the web. All browsers are designed to display the page of information located at web sites around the world. The most popular browser on the market today includes Internet Explorer: Microsoft internet explorer and Netscape navigation.
Q.2. Explain the history of HTML in brief.
Ans.
Html was created by Tim Berners-Lee in collaboration with “Rebort Caillau” while they worked at CERN in 1999. It is a subset of standard generalized mark-up language (SGM). Html is the language of internet .by using this language we can create a web site. It is used to create document on the World Wide Web. It is simply a collection of certain key words called ‘tags’ that are helpful in writing the document to be displayed using a browser on internet.
It is a platform independent language that can be used on any platform such as window, Linux, Macintosh, and so on. To display a document in web it is essential to mark-up the different element (heading, paragraphs, tables, and so on) of the document with the HTML tags. To view a mark-up document user has to open the document in a browser. A browser understands and interprets the HTML tags, identifies the structure of the document and makes decision about presentation of the document.
Q.3.What are the advantage of the DHTML.
Ans.
1. Supported by all browser: DHTML is supported in every major browser, including opera, safari, internet Explorer, and Firefox.
2. Open standards: you can create your pages according to the standardized technologies of DHTML and you can expect that, they will display much the same on any major browser.
3. Small file size: like html, we created DHTML with files which are smaller than graphic files and generally render faster than alternatives such as flash and java
4. Change contents on the fly: when we have loaded our DHTML page then also we can makes the necessary changes to the web page without having to reload it. This is where the dynamic in DHTML comes from.
5. No plug-ins required: if a browser support HTML, CSS, JAVASCRIPT and the Dom it supports DHTML without the need for any additional plug-ins.
6. Easy to learn: it is easy to learn DHTML. For DHTML no need to learn an entire java programming language. Although DHTML is based on JAVASCRIPT which is now a full featured programming language, you do not have to have a degree in computer science to use the basics.
7. Data binding: Microsoft develops this to allow easier access to databases from web sites. It is very similar to using a CGI to access a database, but uses an active x control to function. This feature is very advanced and difficult to use for the beginning DHTML writer.
8. Real-time positioning: when most people think of DHTML this is what they expect. Object, images, and text moving around the web page. This can allow you to play interactive games with your readers or animate portions of your screen.
Q.4.List and explain the feature of XML.
Ans:
Features of XML: xml is popular for many feature and few of them are listed here.
1. Easy data exchange: in xml, data and markup are stored as text that we can configure. If we like, we can use XML editors to create XML documents but if something goes wrong we can examine and modify document directly because it’s all just text. XML provides a very efficient way of storing most data. In addition, when we standardize markup language, many different people can use them.
2. Customizing markup language: we can create customized markup language using XML, and that represent its extraordinary power. We can create a customized browser to handle that language.