A Test Engineer, sometimes known as a QA Engineer, actively engages in test case execution, identifies software anomalies, and reports defects. While other roles may be involved in the process, the Test Engineer's primary responsibility is to find and report software defects.

For designing effective test cases, especially for complex systems, a well-documented requirements specification is indispensable. It serves as the foundation, providing clear, unambiguous details about the system's expected behavior. While experienced testers, automation tools, and client feedback are beneficial, the clarity and accuracy of the requirements drive the efficacy of the test cases.

Screen "Resolutions" refer to the clarity of the display and how many pixels are contained in it. Ensuring an app is adaptable to various resolutions is crucial to ensure that it looks good and functions properly on diverse devices.

The Risk Response phase of Risk Management focuses on developing strategies to counteract or mitigate identified risks. This could involve avoiding the risk, transferring it, mitigating it, or accepting it. Strategies are devised based on the potential impact and likelihood of the risk, ensuring that efforts are proportionate.

Compatibility with the application is paramount when selecting a test automation tool. A tool may be affordable or popular, but if it doesn't integrate well with your application or isn't compatible with your tech stack, its utility becomes limited.

"Error Checklists" are lists that detail common issues or defects encountered in previous projects. By leveraging past experiences, testers can anticipate and identify similar issues in new projects without a predefined set of tests.

Mobile usability testing primarily focuses on assessing the user's experience and interface interactions. It ensures that the app is intuitive, easy to navigate, and meets the expectations of the users. While functionality, load time, and security are vital, usability testing centers on the user's overall experience.

A "high impact, low likelihood" risk indicates an event or situation that doesn't occur frequently but has the potential to cause significant damage or disruption if it does happen. It's essential for organizations to be prepared for such risks, even if they're rare, because of the substantial impact they could have.

The Test Plan document provides a detailed approach to the scope, resources, and schedule of the intended test activities. It acts as a blueprint for the testing process by outlining the strategy, objectives, resources, and schedule, ensuring that stakeholders are aligned.

Walkthroughs involve the author of the software or document leading members of the project team and other interested parties through a manual simulation of the system. The goal is to gather feedback and to identify any misunderstandings or ambiguities.