Quizzes – EduHub

Question 1

What is the purpose of the "data-*" attribute in HTML5?

To encrypt user data To define a data table To create a database connection To store custom data private to the page or application

Question 2

Which element is used to provide a caption for a <figure> element?

Question 3

What does the "contenteditable" attribute do?

Hides the content Automatically saves the content Makes the content read-only Allows the user to edit the content of an element

Question 4

How can you make a custom dropdown without using <select>?

Use <list> tag Use <input type="dropdown"> Use a <div> with JavaScript to toggle a list Use <option> outside <select>

Question 5

What is the correct way to use the <template> tag?

Holds HTML fragments that are not rendered until used by JavaScript Preloads images Defines a reusable style Creates a template for email

Question 6

Which input type is used for selecting a date and time?

datetime datetime-local date time

Question 7

What is the purpose of the "sandbox" attribute in an <iframe>?

Makes the iframe transparent Allows full access to parent page Prevents the iframe from loading Enables a set of extra restrictions on content in the iframe

Question 8

How do you specify that an <input> element should have spell checking enabled?

spellcheck="true" spell="on" check-spelling="yes" enable-spellcheck

Question 9

Which element is used to represent the main content of a document?

Question 10

What is the difference between "defer" and "async" in <script>?

defer downloads script immediately, async waits No difference defer executes after HTML parsing, async executes as soon as downloaded defer is for external scripts, async for inline

Question 11

Which attribute allows you to validate an email input with a specific pattern?

format regex validate pattern

Question 12

What is the purpose of the <datalist> element?

Used for data binding Provides an autocomplete list for an <input> Creates a dropdown menu Defines a list of data items

Question 13

How do you create a responsive iframe that maintains aspect ratio?

Set viewport meta tag Use CSS transform Wrap <iframe> in a <div> with padding-bottom and position relative Use width="100%" only

Question 14

Which HTML element is used to display a dialog box or modal?

Question 15

What does the "download" attribute in an <a> tag do?

Opens the link in a new tab Prevents the link from opening Automatically saves the page as PDF Tells the browser to download the linked resource instead of navigating

Question 16

How can you define a custom element in HTML?

Using data-custom attribute Using customElements.define() with JavaScript Using <custom> tag Using <element> tag

Question 17

What is the purpose of the "reversed" attribute in an <ol>?

Numbers the list in descending order (e.g., 3,2,1) Reverses the order of items visually Applies a reverse color scheme Flips the list horizontally

Question 18

Which element is used to define a sidebar or complementary content?

Question 19

What is the correct way to embed a PDF in an HTML page?

All of the above <object data="file.pdf"> <embed src="file.pdf"> <iframe src="file.pdf">

Question 20

How do you enable cross-origin resource sharing (CORS) for media elements?

crossorigin attribute origin="*" allow-cors cors="true"