CEC Mobile Commerce & App Strategy 4

Question 1

What is the recommended minimum tap target size for mobile ecommerce buttons according to Google's guidelines?

Accepted Answer

44x44 CSS pixels

Answer

Google recommends 44x44 CSS pixels as the minimum tap target size to prevent mis-taps and improve mobile usability.

Question 2

Which mobile analytics event is most critical to track for optimizing a checkout funnel?

Accepted Answer

Screen-by-screen drop-off rates through the checkout flow

Answer

Tracking drop-off at each checkout screen reveals exactly where friction causes abandonment and where to prioritize fixes.

Question 3

A mobile app's crash-free session rate drops from 99.5% to 97%. What is the immediate business impact?

Accepted Answer

Significant revenue loss and negative reviews as 3% of sessions end in crashes

Answer

A 2.5% crash rate means roughly 1 in 40 sessions fails, directly causing revenue loss, churn, and negative App Store reviews.

Question 4

What distinguishes a 'headless commerce' architecture's advantage for mobile apps?

Accepted Answer

It decouples the front-end from the back-end, enabling custom native app experiences with full commerce functionality

Answer

Headless commerce lets developers build fully native app UIs while the backend handles commerce logic via APIs.

Question 5

Which mobile engagement metric indicates the strongest signal of long-term customer loyalty in ecommerce?

Accepted Answer

Purchase frequency per user per 90 days

Answer

Purchase frequency per user over 90 days directly measures repeat buying behavior, the clearest indicator of loyalty.

(CEC) Certified Ecommerce Consultant Practice Test