Web Technology Questions

- Basically it is a string that identifies the elements to which a particular declaration or set of declarations will apply. 

- It can also be referred to as a link between the HTML document and the style sheet. 

- It is equivalent of HTML elements.

For example : 

A {text-indent: 12pt}

Here, the selector is A, which is called as type selector.

var obj = new Object(); or var obj = {};

Web browser is a software application used to locate,retrieve and display content on the World Wide Web, including Web pages, images, videos and other files.

Examples : Microsoft Internet Expiorer , Mozilla Firefox , Google Chrome, Opers , Safari etc...

- FTP is used to upload the files on the server from the client side where it is installed on the computer of clients. 

- FTP client is checked for the installation of the software and according to that the appropriate directory is uploaded on the hosting server. 

- The hosting server uploads the files that is being created by the user and set the permissions for it so that public can access it. 

- Web hosting uses different directories like HTML that is used as var/www/html that is determined using the FTP client. 

- Initial local directory is being set up using FTP client and it is where the website gets stored. 

- The transfer mode is being determined for the files that need to be transferred either in ASCII or BINARY mode.

- The infinite file error can be solved when the data will be read continuously from the file. 

- The error can be solved by using the keys that provide only the resources that are required. 

- The following program is as follows:

osw.write ("HTTP/1.0 200 OK\n\n"); 

while (c != -1) { 

sb.append((char)c); 

c = fr.read(); 

} 

osw.write (sb.toString()); 

- This converts the requested file in such a way that if the file exists it shows the messages as ok otherwise it shows an error.

- Limited file access is to be given to the file to remove the error from the infinite file type.

The <span> tag is used to group inline-elements in a document.

The <span> tag provides no visual change by itself.

The <span> tag provides a way to add a hook to a part of a text or a part of a document.

EX :

<p>My Car Color is <span style="color:blue">blue</span> </p>

=> When a consumer wants to buy a certain product, he go to the website and selects the product he wants to buy. 

=> Once the product is selected, the consumer transaction is moved to the online transaction server where he places an order. 

=> The informations is exchanged over a secure channel through a private gateway to a processing network. 

=> The networked banks accept or reject the transaction.

 All this happens in just a matter of seconds. E-commerce is a very secure due to the SSL (Secure Socket Layer) technology.

JavaScript:

- JavaScript is a scripting language developed by Netscape Communications.

- The Netscape Navigator interprets JavaScript embedded into Web pages.

- JavaScript is used for developing web applications.

- It is not dependent on Sun Microsystem's Java language.

JScript:

- Microsoft JScript is an open implementation of Netscape's JavaScript.

- JScript is a scripting language designed to create active online content. ActiveX controls, Java programs, etc can be linked and automated in the web pages using JScript.