Website Design Website Performance and SEO

Question 1

What does 'page load time' measure in web performance?

Accepted Answer

The total time from request to when all page resources are fully loaded

Answer

Page load time measures the total time from when a browser requests a page to when all its resources are completely loaded and rendered.

Question 2

What is image optimization in web performance?

Accepted Answer

Reducing image file size while maintaining acceptable visual quality

Answer

Image optimization reduces file sizes through compression, format selection, and resizing to speed up page load times.

Question 3

What is 'lazy loading' in web design?

Accepted Answer

Deferring the loading of non-critical resources until they're needed

Answer

Lazy loading defers the loading of images and other resources until they're about to enter the viewport, reducing initial page load time.

Question 4

What is a CDN (Content Delivery Network) in web design?

Accepted Answer

A distributed server network that delivers web content from locations closest to users

Answer

A CDN distributes web assets across global servers so content is delivered from a server geographically close to each user, reducing latency.

Question 5

What is the purpose of browser caching in web performance?

Accepted Answer

To save web resources locally so repeat visits load faster

Answer

Browser caching stores static assets (CSS, JS, images) locally so on repeat visits, browsers load them from the cache instead of re-downloading.

Website Design Practice Test