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What type of errors does presentation layer testing focus on?

  1. Navigational errors

  2. Structural errors

  3. Both navigational and structural errors

  4. Only performance errors

The correct answer is: Both navigational and structural errors

Presentation layer testing examines the user interface and the visual aspects of an application, which are crucial for user experience. This type of testing targets both navigational and structural errors. Navigational errors occur when the links, buttons, or menus fail to function correctly, disrupting the user's ability to interact with the various elements of the application. Since the presentation layer directly impacts how users navigate through the application, identifying and rectifying these errors ensures that users can move smoothly from one part of the application to another. Structural errors pertain to how the visual components are organized and displayed. This includes issues such as layout problems, incorrect font sizes, or elements overlapping in a way that affects usability. Presentation layer testing is essential for ensuring that the application not only looks good but also maintains the correct structure to facilitate an intuitive user experience. Combining both navigational and structural aspects underscores the comprehensive nature of presentation layer testing, making it vital for delivering a functional and user-friendly application.