Web Technology Questions

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.

XML, Extensible Markup Language, is an open, text based markup language that provides structural and semantic information to data. XML is a metalanguage that can be used to create other language. It is used to structure and describe data that can be understood by other applications. Using XML, we can separate the user interface from data.

Features of XML :

- XML is a generalized markup language that means one can define his/her own tag sets.

- A valid XML document contains rules and is self-describing.

- The rules that are found in DTD allow the documents to be validated.

When we add many spaces in the content then HTML remove all space except one space this is Non Breaking Space. To overcome this problem we use “&nbsp”. Suppose we want to add 3 space between two words then we have to use &nbp three time. 

=> 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.

- The traffic can be measured using the size of the files that are transferred from one place to another (server-client). 

- It can also be measured by the size of the file that is being requested by the client from the server. 

- The number of visitors arriving on the website also involve in the measurement of the traffic using the web hosting platform. 

- The advertisements of the sites take more bandwidth to allow more number of users to be on the website. 

- More number of users provides higher traffic on the website thus it requires more bandwidth on the web hosting sites.

- Infinite file consists of random bits of code that is stored in /dev/random file used to generate the cryptographic keys. 

- Infinite file consists of the source of infinite data that can be used to provide the response in easy manner. 

- Web server consists of the file that is received by the server in this format GET //dev/random HTTP/1.0. 

- Web server provides the continuous data that can be read from /dev/random/ before the web server can run out of the memory. 

- The server crashes out in case it runs out of the memory due to the infinite file type and it is very essential in case of the web security.

Web application provides services (Free and Paid) apart from information.

Ex: Online Banking System

It provides Bank  information , Branches & ATM information, Loans information etc...

And It provides balance enquiry, Fund transfer, Bill payments like services.

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...