DCA6203 MCA WEB TECHNOLOGIES

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SESSION MAY 2023
PROGRAM MCA
SEMESTER II
course CODE & NAME DCA6203 – Web Technologies
CREDITS 4

 

Assignment Set – 1

  1. A. Define TCP and IP communication through suitable diagram?

Ans: The TCP corresponds to the transport layer of OSI reference model, The TCP is known as a connection-oriented protocol, which means that a connection is established and maintained until such time as the message or messages to be exchanged by the application programs at each end have been

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  1. Why are Logical Character Tags used? Explain any five Logical Character tags with suitable example.

Ans: Logical character tags, also known as logical mark-up or semantic mark-up, are used to provide meaning and structure to the content of a document. They add additional information to the text, allowing software and systems to understand and process the content in a more meaningful

 

  1. A. What is DHTML? What are the advantages of DHTML?

Ans: DHTML (Dynamic HTML) is a combination of technologies—HTML (Hypertext Mark-up Language), CSS (Cascading Style Sheets), and JavaScript—that allows for the creation of dynamic and interactive web content.

DHTML enables developers to manipulate and modify various elements of a web page in real-time,

 

  1. What are the building blocks of an XML document? Explain with example.

Ans: The building blocks of an XML (eXtensible Mark-up Language) document are as follows: 

Elements: Elements are the fundamental units of an XML document. They consist of a start tag, content, and an end tag.

The start tag begins with a less-than symbol (“<“), followed by the element name, and ends with a greater-than

 

 

  1. A. Explain about XPointer in detail.

Ans: XPointer is a component of the XML Linking Language (XLink) and XML Path Language (XPath) specifications. It provides a way to address specific parts or fragments of an XML document using a combination of element names, attribute values, and other location-based expressions. XPointer allows you to create references to specific portions of an XML document

 

  1. Explain the concept of XSLT?

Ans: XSLT (Extensible Style sheet Language Transformations) is a powerful language used to transform XML documents into different formats, such as HTML, XHTML, XML, or plain text. It is a part of the XSL (Extensible Style sheet Language) family, which also includes XSL-FO (XSL

 

 

Assignment Set – 2

  1. A. How does AJAX work? Explain with example.

Ans: AJAX (Asynchronous JavaScript and XML) is a technique used to build interactive web applications that can exchange data with a server asynchronously without requiring a full page reload. It enables seamless updates and dynamic content on web pages by making asynchronous requests to the server and updating the page content in real-time.

The working

 

 

  1. What are different looping statements in PHP? Explain.

Ans: In PHP, there are several looping statements available to execute a block of code repeatedly based on certain conditions or for a specified number of times.

The different looping

 

  1. A. How can you load XML Data into an HTML Page? Explain with example.

Ans: To load XML data into an HTML page, you can use JavaScript along with the XMLHttpRequest object or the newer Fetch API.

Here’s an example that demonstrates how to load XML data and display it in an HTML page:

<!DOCTYPE ht

 

  1. Define ASP session object with properties and methods.

Ans: In ASP (Active Server Pages), the Session object represents a user-specific session and allows you to store and retrieve data across multiple pages during a user’s visit to a website. It provides a way to maintain state and store user-specific information.  The Session object has several properties

 

  1. A. How can we add parameters and return values in PHP functions?

Ans: In PHP, you can add parameters and return values to functions to make them more versatile and reusable.

Here’s how you can add parameters and return values in PHP functions: 

Adding Parameters

 

  1. How to establish MySQL connection and retrieve data using PHP Script? Explain with example. Consider database named “University DB” and table “Student”.

Ans: To establish a MySQL connection and retrieve data using a PHP script, you can follow these steps: 

Install and configure the necessary software: 

Install PHP: If you don’t have PHP installed, you can download it from the official PHP website and follow the installation instructions for your operating system.

Install MySQL: