Free Salesforce User-Experience-Designer Exam Questions

Beyond mouse clicks and visual positioning of content on the screen, what should a designer also consider?

Cloud Kicks is launching a new Salesforce org and wants to test its levels of accessibility, including keyboard navigation. Which detail could be verified by testing keyboard navigation for accessibility? 

Users from a small group within a sales teams have complained about an object that is often used only by them that has not been a edit to their lighting app due to small volume of users the administrator is not considering a new app for them
Which two salesforce features should be suggested to improve the end-user experience ?

A UX Designer has created two different user interface designs for a new marketing landing expected to have several visitors. The landing page has a contact from on it, and the designer wants to know which design products the most from completions.
Which testing method should be used?