Web Technology Questions

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- Web hosting services provide internet hosting and its services that provide organization to build the websites. 

- The web hosting services also allow the individuals to access the websites through the World Wide Web. 

- Web hosting provides the space to put their content and allow the clients to provide the Internet connectivity. 

- It provides the data center that allows the use of higher space and connectivity properties for the Internet users. 

- It provides tools to allow the website to run on the servers and easily accessible from the outside world using the browser.

XPath specifies the path in the XML document which has hierarchical elements. XPath is used with XPointer and XSLT and parser.  

Canvas is a rectangular area on a HTML page, specified with the tag <canvas>. 

NaN stands for ‘not-a-number’. The function isNaN determines the argument or the value is a NaN. The function returns true if the argument is not a number, otherwise returns false.

JavaScripts uses a hierarchical structure that applies to the objects in a document. There are some objects that show the relationship of one object to another using the language.

Window object: This is the topmost object in the hierarchy. It represent the content area of browser window that consists of HTML documents. Each frame is also a window that has some actions inside it.

Document object: This object gets loaded in a window and consists of objects of different kind in the model. It consists of the content that will be written in the script.

Form object: Form objects are used for more interaction with the users. It represents the form elements inside <FORM>...</FORM> tag.

Web server handles client side and server side validations and helps to deliver web content that can be accessed through the Internet protocols.

Examples:

Microsoft IIS (Internet Information Service)

Apache web server from Apache

Java web server

Pramathi web server etc...

- External Style Sheets are useful as it keeps the style and content separately and doesn’t allow it to mix with each other. It can control the styles for multiple documents, whereas inline style mixes the content with the style and make the code messier.

- External style sheet allows the creation of various classes in a structured way, whereas inline style sheet can’t create or control class elements.

- External style sheet can use selector and grouping methods to apply styles, whereas inline styles can’t use selector and grouping methods.