BEU Introduction to Web Designing CSE 2025 | Most Important PYQs & Unit-wise Long Answer Solutions

PostedOctober 25, 2025

UpdatedOctober 25, 2025

ByPrabhakar Guru

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BEU Introduction to Web Designing 2025 is one of the core subjects in the CSE syllabus of Bihar Engineering University. This post provides unit-wise important questions, previous year solutions (PYQs), and detailed long answers to help students prepare effectively for upcoming exams.

Course Code: 100219
Subject: Introduction to Web Designing
Branch: CSE / IT
University: Bihar Engineering University (BEU)
Updated For: 2025 Exams

🌐 Introduction

Are you a CSE student under BEU preparing for your Introduction to Web Designing (Code 100219) exam in 2025?
This guide is your one-stop solution for quick, effective, and smart revision!

We’ve carefully compiled everything you need:

✅ Unit-wise important questions and answers
✅ Most expected previous year questions (PYQs)
✅ Detailed long answer solutions
✅ Exam-oriented study tips to help you score maximum marks

Let’s begin your smart revision plan for the BEU Web Designing CSE 2025 exam! 🚀

Unit 1 – BEU Introduction to Web Designing 2025: Internet & Web Fundamentals

📘 Conceptual and theory-heavy unit — expect 1–2 short answers and 1 long question.

Important Topics:
Internet vs. WWW, Website, Homepage, Domain Name, Web Browser vs. Web Server, Client-Server Architecture, 3-Tier Architecture, Web Hosting, URL, MIME, HTTP Protocol.

💡 Q1. Explain Client-Server Architecture with a neat diagram. Why is it important for the web?

Answer:
The Client-Server Architecture is the foundation of the modern web. It divides work between two entities — client and server.

Client: The user’s device or browser (like Chrome or Firefox) that requests information.
Server: A powerful computer that processes requests and provides responses (like web pages or data).

How it works:

User enters a URL (e.g., www.example.com).
The browser (client) sends an HTTP request to the web server.
The server processes it and sends an HTTP response (HTML, CSS, JS files).
The browser displays the webpage.

Diagram:

[Client] --(HTTP Request)--> [Server]
[Client] <--(HTTP Response)-- [Server]

This architecture is essential because it centralizes logic on the server while allowing multiple clients to access the same data efficiently.

💡 Q2. Explain the HTTP Protocol and its Request–Response Cycle.

Answer:
HTTP (HyperText Transfer Protocol) is an application-layer protocol that defines how data is transmitted over the web.
It is stateless, meaning each request and response are independent.

Request–Response Cycle:

Connection: Client establishes a TCP connection (usually port 80).
HTTP Request: Sent by the client containing method (GET, POST), headers, and optional body.
Processing: Server interprets and processes the request.
HTTP Response: Sent by the server with status code (200 OK, 404 Not Found), headers, and content body.
Connection Close: Ends or keeps alive depending on HTTP version.

“Students studying BEU Introduction to Web Designing 2025 should focus on HTML basics, CSS syntax, and the working of JavaScript.”

🌐 UNIT 2 – Introduction to HTML

📗 High-scoring and practical unit — usually 2 short + 1 long question.

Important Topics:
Structure of HTML, Basic Tags, <div> vs <span>, Hyperlinks, Lists, Tables, Images, Frames, Character Entities, URL Encoding.

💡 Q1. Differentiate between `<div>` and `<span>` tags in HTML with examples.

Feature	`<div>` Tag	`<span>` Tag
Display	Block-level element	Inline-level element
Purpose	Groups large sections for layout	Styles small parts of text
Use	Layouts, headers, sidebars	Inline styling (e.g., color change)

Example:

<!-- div example -->
<div style="background-color:lightblue; padding:10px;">
  <h3>This is inside a div</h3>
  <p>Div creates a separate block.</p>
</div>

<!-- span example -->
<p>This is a <span style="color:red;">red text</span> using span.</p>

💡 Q2. Write the basic structure of a valid HTML5 document.

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document Title</title>
</head>
<body>
  <h1>My First Heading</h1>
  <p>My first paragraph.</p>
</body>
</html>

Explanation:

<!DOCTYPE html> → Declares HTML5 document.
<html> → Root element.
<head> → Meta info, title, links.
<body> → Visible content for users.

🎧 UNIT 3 – HTML Forms and Multimedia Integration

📙 Application-based unit — a code-based long answer is often asked.

Important Topics:
Forms, Input Elements, Buttons, Select, <canvas>, Audio/Video, HTML vs XHTML.

💡 Q1. Write HTML code for a Student Registration Form.

<!DOCTYPE html>
<html>
<head>
  <title>Student Registration</title>
</head>
<body>
  <h2>Student Registration Form</h2>
  <form action="/submit.php" method="post">
    <label>Full Name:</label>
    <input type="text" name="fullname" required><br><br>

    <label>Email:</label>
    <input type="email" name="email" required><br><br>

    <label>Password:</label>
    <input type="password" name="password" required><br><br>

    <label>Gender:</label>
    <input type="radio" name="gender" value="male"> Male
    <input type="radio" name="gender" value="female"> Female<br><br>

    <label>Subjects:</label>
    <input type="checkbox" value="Web Design"> Web Design
    <input type="checkbox" value="Maths"> Mathematics<br><br>

    <label>Course:</label>
    <select name="course">
      <option>B.Tech</option>
      <option>M.Tech</option>
      <option>BCA</option>
    </select><br><br>

    <label>Address:</label><br>
    <textarea rows="4" cols="40"></textarea><br><br>

    <input type="submit" value="Register">
  </form>
</body>
</html>

🎨 UNIT 4 – Introduction to CSS: Styling and Layouts

📒 Frequently asked for both short and long answers.

Important Topics:
Need for CSS, Syntax, Types (Inline, Internal, External), Selectors, Box Model, Background, Fonts, Float, Display.

💡 Q1. What is the Box Model in CSS?

Answer:
The CSS Box Model defines how elements are structured and spaced on a web page.

Components:

Content: The main area (text/image).
Padding: Space between content and border.
Border: Encloses padding and content.
Margin: Space outside the border.

|------------------------------|
|         Margin               |
|  |------------------------|  |
|  |     Border             |  |
|  |  |------------------|  |  |
|  |  |   Padding        |  |  |
|  |  |  |------------|  |  |  |
|  |  |  |  Content   |  |  |  |
|  |  |  |------------|  |  |  |
|  |  |------------------|  |  |
|  |------------------------|  |
|------------------------------|

💡 Q2. Differentiate between Inline, Internal, and External CSS.

Type	Description	Example	Use
Inline	Inside the HTML tag	`<h1 style="color:blue;">Text</h1>`	Quick fixes
Internal	Inside `<style>` tag in `<head>`	`<style> h1{color:blue;} </style>`	Single page
External	In `.css` file linked via `<link>`	`<link rel="stylesheet" href="style.css">`	Best for multiple pages

⚙️ UNIT 5 – JavaScript Basics: Scripting and Control

📕 Important for practical and logic-based questions.

Important Topics:
Variables, Data Types, Operators, Conditions, Loops (for, while, do-while).

💡 Q1. Write a JavaScript program to check if a number is even or odd.

<script>
function checkEvenOdd() {
  let num = parseInt(prompt("Enter a number:"));
  if (num % 2 == 0)
    alert(num + " is Even");
  else
    alert(num + " is Odd");
}
checkEvenOdd();
</script>

💡 Q2. Explain different types of loops in JavaScript.

1. for loop

for (let i = 1; i <= 5; i++) {
  console.log(i);
}

2. while loop

let i = 1;
while (i <= 5) {
  console.log(i);
  i++;
}

3. do…while loop

let j = 1;
do {
  console.log(j);
  j++;
} while (j <= 5);

🧠 UNIT 6 – Advanced JavaScript: Objects and Events

📗 Highly important for practicals and form validation.

Important Topics:
Objects, Arrays, Strings, Event Handling (onclick, onsubmit), Form Validation, try…catch.

💡 Q1. What are JavaScript Events? Explain with examples.

onclick Example:

<button onclick="alert('Button Clicked!')">Click Me</button>

onsubmit Example:

<form onsubmit="return validateForm()">
  <input id="name" required>
  <input type="submit">
</form>

<script>
function validateForm() {
  let name = document.getElementById("name").value;
  if (name == "") {
    alert("Name cannot be empty!");
    return false;
  }
  return true;
}
</script>

💡 Q2. Write JS code for simple email validation.

<label>Email:</label>
<input type="text" id="emailField">
<button onclick="validateEmail()">Validate</button>
<p id="emailError" style="color:red;"></p>

<script>
function validateEmail() {
  const email = document.getElementById("emailField").value;
  if (email.indexOf('@') <= 0 || email.lastIndexOf('.') <= email.indexOf('@') + 1 || email.lastIndexOf('.') >= email.length - 1) {
    document.getElementById("emailError").innerHTML = "Invalid email address.";
  } else {
    document.getElementById("emailError").innerHTML = "Email is valid!";
  }
}
</script>

🎯 Conclusion & Exam Tips for BEU Web Designing 2025

✅ Define clearly — Always start long answers with definitions.
✅ Draw diagrams — Especially for Client-Server & Box Model.
✅ Practice coding — Write HTML, CSS, and JS by hand.
✅ Time management — Focus on Unit 2 (HTML) and Unit 5 (JavaScript) for high scores.

“This BEU Introduction to Web Designing 2025 guide covers all major PYQs and long answer solutions to support CSE students in exam revision.”

✨ Final Words

This blog is your complete BEU Web Designing CSE 2025 preparation guide — covering all important PYQs, unit-wise long answers, and practical codes.

Keep revising, stay confident, and ace your BEU exam! 💪💻

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BEU Introduction to Web Designing CSE 2025 | Most Important PYQs & Unit-wise Long Answer Solutions

🌐 Introduction

Unit 1 – BEU Introduction to Web Designing 2025: Internet & Web Fundamentals

💡 Q1. Explain Client-Server Architecture with a neat diagram. Why is it important for the web?

💡 Q2. Explain the HTTP Protocol and its Request–Response Cycle.

🌐 UNIT 2 – Introduction to HTML

💡 Q1. Differentiate between <div> and <span> tags in HTML with examples.

💡 Q2. Write the basic structure of a valid HTML5 document.

🎧 UNIT 3 – HTML Forms and Multimedia Integration

💡 Q1. Write HTML code for a Student Registration Form.

🎨 UNIT 4 – Introduction to CSS: Styling and Layouts

💡 Q1. What is the Box Model in CSS?

💡 Q2. Differentiate between Inline, Internal, and External CSS.

⚙️ UNIT 5 – JavaScript Basics: Scripting and Control

💡 Q1. Write a JavaScript program to check if a number is even or odd.

💡 Q2. Explain different types of loops in JavaScript.

🧠 UNIT 6 – Advanced JavaScript: Objects and Events

💡 Q1. What are JavaScript Events? Explain with examples.

💡 Q2. Write JS code for simple email validation.

🎯 Conclusion & Exam Tips for BEU Web Designing 2025

✨ Final Words

💡 Q1. Differentiate between `<div>` and `<span>` tags in HTML with examples.