Mobile Marketing Mobile-Optimized Web Presence 4

Question 1

A mobile website has a Cumulative Layout Shift (CLS) score of 0.28. How is this rated by Google's Core Web Vitals?

Accepted Answer

Poor

Answer

Google rates CLS above 0.25 as 'Poor'; a score of 0.28 falls in this range, meaning the page has significant unexpected layout shifts.

Question 2

What technique involves serving different HTML content to mobile and desktop users from the same URL based on the User-Agent string?

Accepted Answer

Dynamic Serving

Answer

Dynamic serving uses the User-Agent header to detect the device type and serve different HTML/CSS from the same URL, without a redirect.

Question 3

Which of the following is a disadvantage of using separate mobile URLs (e.g., m.example.com) compared to responsive design?

Accepted Answer

They require maintaining two separate codebases and content sets

Answer

Separate mobile sites require duplicating content, development, and maintenance efforts across two codebases, increasing cost and complexity.

Question 4

On mobile landing pages, above-the-fold content refers to content that is visible:

Accepted Answer

Without any scrolling on the initial screen view

Answer

Above-the-fold content is what users see immediately upon landing without scrolling, making it critical for first impressions and CTA visibility.

Question 5

What does minifying CSS and JavaScript files accomplish for mobile web performance?

Accepted Answer

Reduces file size by stripping whitespace, comments, and shortening variable names

Answer

Minification removes unnecessary characters (whitespace, comments) from code without changing functionality, resulting in smaller files that download faster.

Mobile Marketing Practice Test

Mobile Marketing Practice Test

Mobile Marketing Mobile-Optimized Web Presence 4