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Techno exponent Interview Questions and Answers
Ques:- Why do style sheets exist?
Right Answer:
Style sheets exist to separate content from presentation, allowing for consistent styling across multiple pages, easier maintenance, and improved loading times.
Ques:- What is a single page application SPA
Right Answer:
A Single Page Application (SPA) is a web application that loads a single HTML page and dynamically updates the content as the user interacts with the app, without requiring a full page reload.
Ques:- How does flexbox work in CSS
Right Answer:
Flexbox, or the Flexible Box Layout, is a CSS layout model that allows items in a container to be arranged and aligned efficiently. It works by defining a container as a flex container using `display: flex;`, which enables its direct children (flex items) to be laid out along a main axis (horizontal or vertical). You can control the alignment, direction, spacing, and size of these items using properties like `flex-direction`, `justify-content`, `align-items`, and `flex-wrap`. This makes it easier to create responsive layouts without using floats or positioning.
Ques:- What are event bubbling and event delegation in JavaScript
Right Answer:
Event bubbling is a JavaScript event propagation method where an event starts from the target element and bubbles up to its ancestors in the DOM hierarchy. Event delegation is a technique that involves attaching a single event listener to a parent element to manage events for multiple child elements, leveraging event bubbling to handle events efficiently.
Ques:- What are some popular frontend frameworks and libraries
Right Answer:
Some popular frontend frameworks and libraries are:

1. React
2. Angular
3. Vue.js
4. Svelte
5. Bootstrap
6. jQuery
7. Ember.js
8. Backbone.js
Ques:- What is the difference between HTML and HTML5
Right Answer:
HTML5 is the latest version of HTML, which includes new features such as native support for audio and video, new semantic elements (like `<article>`, `<section>`, and `<header>`), improved parsing rules, and better support for web applications with APIs like local storage and canvas. HTML, on the other hand, refers to earlier versions that lack these enhancements.
Ques:- Can we get down to practicalities. How do I create XHTML pages?
Right Answer:
To create XHTML pages, follow these steps:

1. Use a text editor to create a new file.
2. Start with the XML declaration: `<?xml version="1.0" encoding="UTF-8"?>`
3. Define the document type with: `<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">`
4. Open the `<html>` tag with the `xmlns` attribute: `<html xmlns="http://www.w3.org/1999/xhtml">`
5. Create the `<head>` section with a `<title>` tag.
6. Open the `<body>` section and add your content.
7. Close all tags properly, ensuring they are well-formed.
8. Save the file with a `.xhtml` extension.

Example structure:

```xml
<?xml version="1.0" encoding="UTF-8"
Ques:- How to use comments element in RSS?
Right Answer:
In RSS, the `<description>` element is typically used to provide comments or summaries about the item. You can include comments within this element to give more context or details about the content.
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