(SEM VI) THEORY EXAMINATION 2021-22 WEB TECHNOLOGY

WEB TECHNOLOGY (KCS602) – Section-Wise Exam Notes

SECTION A – Short Answer Notes (2 Marks Each)

1. Thread in Java & Ways to Create Thread

A thread is a lightweight process used to achieve multitasking.
Threads allow multiple tasks to run simultaneously within a program.

Ways to create thread:

By extending Thread class                                 By implementing Runnable interface

2. Life Cycle of Applet

The applet life cycle consists of:

init() – Initializes the applet                               start() – Starts execution

paint() – Displays output                                   stop() – Stops execution

destroy() – Removes applet from memory

3. Advantages of CSS

CSS separates content from presentation, improves page loading speed, ensures consistency across pages, and simplifies website maintenance.

4. Creating Object in JavaScript

An object can be created using:                        Object literal

new Object()                                                      Constructor function

Example:                                                             let car = { brand: "Audi", model: "A6" };

5. Difference Between HTML and XML

HTML is used to design web pages and has predefined tags, whereas XML is used to store and transport data and allows user-defined tags.

6. ResultSetMetaData Interface

ResultSetMetaData provides information about database result sets such as column count, column name, and data type.

7. Implicit Objects in JSP

JSP provides built-in objects like request, response, session, application, out, and config for easy server-side programming.

8. Web Server vs Application Server

A web server handles HTTP requests, while an application server executes business logic and supports enterprise applications.

9. Directory Structure of Web Application

Key folders include:                                              WEB-INF

classes                                                                   lib

web.xml

10. Characteristics of JavaBeans

JavaBeans are reusable components, follow getter/setter methods, are serializable, and have a no-argument constructor.

SECTION B – Long Answer Notes (10 Marks)

1. Features of Java Programming Language

Java is platform-independent, object-oriented, secure, robust, multithreaded, and supports automatic memory management through garbage collection.

2. CSS Rule for Font Scaling & Integration

CSS example:

body {  font-size: 200%; }                                      CSS can be integrated using:

Inline CSS                                                              Internal CSS

External CSS

3. AJAX – Working & Applications

AJAX allows web pages to update asynchronously without refreshing the page.
It uses JavaScript, XML/JSON, and HTTP requests.
Used in live search, form validation, and dynamic content loading.

4. Advantages of Servlet Over CGI

Servlets are faster, platform-independent, support multithreading, and consume less memory compared to CGI programs.

5. Using Beans in JSP

JavaBeans are used in JSP for separating logic from presentation.
They are accessed using <jsp:useBean> and <jsp:getProperty> tags.

SECTION C – Descriptive / Program-Based Answers (10 Marks)

1. Procedural vs Object-Oriented Programming

Procedural programming focuses on functions, whereas OOP focuses on objects.
OOP supports inheritance, polymorphism, encapsulation, and abstraction.

2. Inheritance & Multiple Inheritance in Java

Inheritance allows one class to acquire properties of another.
Java does not support multiple inheritance using classes to avoid ambiguity but supports it using interfaces.

3. HTML Registration Form

Includes input fields like name, DOB, gender, email, and mobile number using <form>, <input>, and <select> tags.

4. XML DTD for Weather Report

DTD defines structure of XML elements like date, location, temperature range, city, state, and country.

5. JavaScript Program for Date & Time

Uses Date() object to display current date and time dynamically.

6. JDBC Drivers

Types of drivers:

Type 1 – JDBC-ODBC Bridge                            Type 2 – Native API

Type 3 – Network Protocol                               Type 4 – Thin Driver

7. Session Tracking Techniques

Includes cookies, URL rewriting, hidden fields, and HttpSession object.

8. Servlet & Types

Servlet is a server-side Java program.
Types include:                                                  GenericServlet

HttpServlet