Alpha Testing is usually performed in a controlled environment and involves internal teams. This allows the organization to receive feedback in a quicker and more direct manner. Beta Testing, on the other hand, involves actual users but may introduce challenges in managing feedback and potential public relations issues.

If a defect is considered not genuine or if it's not a real issue, it is typically marked as "Rejected." This status indicates that the defect raised is either not replicable, is intended behavior, or isn't valid in the context it was reported.

Requirement-based Testing, as the name implies, involves designing test cases directly based on the system requirements. It ensures that the software system meets and conforms to the specified requirements, making certain that all functionalities are tested as intended.

Configuration Auditing is a critical aspect of Configuration Management. It involves the process of evaluating and examining the configurations to ensure that they align with the approved configuration documentation. Through this, unauthorized changes, discrepancies, or inconsistencies can be detected and addressed promptly.

A Walkthrough is a type of review where the author leads members of the review through the document based on their understanding. It's informal in nature and often relies on scenarios to provide the reviewers with a deeper understanding. The main goal is to gather feedback and achieve a common understanding.

Performance Testing encompasses a range of tests (including Load, Stress, Scalability, and Volume Testing) to ensure that the software behaves well under expected loads, extreme conditions, and varying workloads. The objective is to deliver a seamless user experience, irrespective of the conditions or demands placed on the software.

Having domain knowledge allows testers to better anticipate potential problem areas within the software. By understanding the nuances and intricacies of the domain, testers can "guess" or predict where errors might occur, making their testing efforts more focused and effective in uncovering defects.

Configuration Management (CM) in software development primarily serves to systematically manage, organize, and control the changes and versions in software documents, code, and other entities during the development process. It ensures consistency and traceability across the software lifecycle.

The Agile model is well-suited for projects where rapid changes are expected, as it emphasizes adaptability and customer feedback. Iterative development allows the team to accommodate changes in requirements and design more flexibly than traditional models like Waterfall or V-Model.

Parallel execution refers to running multiple test cases or test suites concurrently, usually distributed across various machines or cores. This drastically reduces the total testing time, especially in large-scale projects, as it eliminates the need to wait for each test to finish.

Beta Testing is one of the final stages in the software testing process where the software is released to a limited number of end-users under real-world conditions. The primary purpose is to get feedback from users, ensuring that there are no major failures when it's released to the public and to understand any enhancements users might like to see.

In the Test Planning phase of the Software Testing Life Cycle (STLC), all the planning for the testing activities is done. This includes selecting and setting up the necessary testing tools.