Mobile Marketing Mobile-Optimized Web Presence 5

Question 1

What is the recommended minimum contrast ratio for normal text on mobile screens to meet WCAG AA accessibility standards?

Accepted Answer

4.5:1

Answer

WCAG AA requires a minimum contrast ratio of 4.5:1 for normal text to ensure readability for users with visual impairments.

Question 2

A mobile e-commerce site sees high add-to-cart rates but very low checkout completion. Which mobile-specific issue is most likely to blame?

Accepted Answer

A complex, multi-step checkout form not optimized for mobile input

Answer

Long checkout forms with poor input types (no numeric keypad for card numbers, no autocomplete) cause significant abandonment on mobile devices.

Question 3

Which HTML input type attribute should be used for a phone number field to trigger the numeric keypad on mobile devices?

Accepted Answer

type='tel'

Answer

type='tel' triggers the telephone keypad (including + and # characters) on mobile browsers, which is the correct input type for phone numbers.

Question 4

What is 'mobile-first indexing' as implemented by Google?

Accepted Answer

Google primarily uses the mobile version of a site for indexing and ranking

Answer

With mobile-first indexing, Google predominantly uses the mobile version of a page's content for indexing and ranking, even for desktop searches.

Question 5

A travel site's mobile page uses large, full-screen video as the hero element. What is the most significant performance risk?

Accepted Answer

Large video files significantly increase page load time and data consumption

Answer

Full-screen hero videos have very large file sizes that dramatically increase load times and consume mobile users' data allowances.

Mobile Marketing Practice Test