Cross Browser Device and Accessibility Testing Questions

Covers methods and practices for verifying that applications behave correctly across multiple web browsers, browser versions, operating systems, and device form factors including desktop, tablet, and mobile. Topics include building pragmatic cross platform test matrices, choosing between real devices and emulators or simulators, responsive design validation, viewport and pixel density considerations, handling touch and pointer interactions, and understanding performance trade offs on constrained hardware and networks. Includes inclusive design and accessibility testing using the Web Content Accessibility Guidelines, keyboard navigation, focus management, semantic markup, alternative text for images, color contrast checks, and interaction testing with assistive technologies such as screen readers. Candidates should be able to describe how to combine automated compatibility and accessibility scanning with manual exploratory testing, how to prioritize combinations by risk and user demographics, and how to use device farms and parallel execution to balance coverage and cost.