Below is the answer and explanation for the question how many times per second do most devices refresh their screens?
How many times per second do most devices refresh their screens?
100
35
60 ✅
20
Correct answer
60 ✅
Explanation
Most devices today refr...
Below is the answer and explanation for the question which of the following describes the payment API correctly?
Which of the following describes the payment API correctly?
It is designed for external card readers
It requires a phone with a fingerprint reader
It bypasses the checkout form ✅
It replaces your payment processor...
Below is the answer and explanation for the question for each font on your website you should:
For each font on your website you should:
Minimize the HTML
Make sure to add as many as possible
Add CSS
Minimize the number of used variants. ✅
correct answer
Minimize the number of used...
Below is the answer and explanation for the question ehich of these features is part of a progressive web app?
Which of these features is part of a progressive web app?
UX API
Location API
Call API
Add to home screen ✅
correct answer
Add to home screen ✅
explanation
Wort...
Below is the answer and explanation for the question which describes how a service worker operates?
Which describes how a service worker operates?
It runs a programmable network proxy ✅
It doesn’t handle network requests coming from the navigation on the website
It can be used only when the user is browsing the website
None of th...
Below is the answer for the question which of the following statements is true about the mobile experience of users?
Which of the following statements is true about the mobile experience of users?
It’s important to show as much information as possible on the visible part of a mobile site
Users are willing to accept longer load times for high-resolution images...
Below is the answer and explanation for the question what is it that the app shell helps with
What is it that the app shell helps with
Creating a fully optimized site
Improves elements of the UX
Making the full page load faster
Making transitions between pages faster ✅
correct answer
Making transiti...
Below is the answer and explanation for the question why did Facebook create “2G Tuesdays”?
Why did Facebook create “2G Tuesdays”?
To understand how people on 2G use their product ✅
To run a random experiment
Most users are on 2G
Facebook didn’t create “2G Tuesdays”
correct answer
To understand how...
Below is the answer and explanation for the question which is an example of a situation when an unnecessary resource negatively impacts the user experience.
Which is an example of a situation when an unnecessary resource negatively impacts the user experience.
Optimized images
Lazy loading
One web font
A photo carousel on the homepage tha...
Below is the answer and explanation for the question using a mix of desktop and mobile-optimized pages on mobile sites improves the user experience since some users are more familiar with the desktop version of the site.
Using a mix of desktop and mobile-optimized pages on mobile sites improves the user experience since some users are more familiar with the desktop version of the site.