Which CSS unit is commonly used in fluid grid layouts?
A). Pixels
B). Points
C). Percentages
D). Inches
How does the img { max-width: 100%; } CSS rule help in responsive design?
A). Forces images to a fixed size
B). Ensures images are never larger than their container
C). Prevents images from being displayed
D). Sets a minimum width for all images
How can jQuery be used to toggle a navigation menu on small screens?
A). By using .hide() and .show() methods
B). By using .toggleClass() method
C). By using .slideToggle() method
D). By using .fadeIn() method
What does the @media (max-width: 768px) CSS rule indicate?
A). Styles will be applied when the device width is exactly 768px
B). Styles will be applied when the device width is less than or equal to 768px
C). Styles will be applied when the device width is greater than 768px
D). Styles will be applied when the device height is 768px or more
What does the $('.menu-toggle').click(function() { $('.menu').slideToggle(); }); code do?
A). Hides the menu permanently
B). Toggles the visibility of the menu with a sliding effect
C). Fixes the menu position
D). Changes the menu color
How does display: none; help in responsive design?
A). It hides elements from the page completely
B). It makes elements visible only on small screens
C). It resizes elements
D). It changes the background color of elements
Why is it important to use $(document).ready(function() { ... }); in jQuery?
A). To ensure the DOM is fully loaded before executing scripts
B). To increase script execution speed
C). To prevent scripts from running
D). To hide content until the user interacts with the page
What does the following CSS media query do: @media (orientation: portrait) { ... }?
A). Applies styles when the device is in landscape mode
B). Applies styles when the device is in portrait mode
C). Applies styles regardless of orientation
D). Applies styles only to desktop devices
Which jQuery method is used to change the source of an image dynamically?
A). .attr()
B). .html()
C). .css()
D). .val()
How can touch events be handled in jQuery for responsive design?
A). By using .hover() method
B). By using .click() method
C). By using .swipe() method
D). By using .resize() method