The Requirements phase of the SDLC involves validating the requirements to ensure they align with the project's objectives. This phase is crucial for establishing a clear project scope and ensuring that the requirements are realistic and achievable.

During "Stress" testing, a software application is tested under a specific expected load to assess its performance under extreme conditions and to identify its breaking point.

The V-Model ensures that development and testing processes correspond by defining corresponding development and testing phases that run in a sequential and parallel manner. It emphasizes testing requirements based on corresponding development phases, improving alignment and effectiveness.

The Waterfall-Prototype model combines characteristics of the traditional Waterfall model and the iterative Prototype model. It allows for early feedback like prototyping while maintaining a structured approach like Waterfall.

The Open-Closed SOLID principle states that classes should be open for extension but closed for modification. It promotes software design that allows for new functionality to be added without altering existing code.

By creating "Indexes" in a database, you can speed up the retrieval of rows from a database table. Indexes provide a faster way to locate specific data, enhancing database query performance.

Load testing is a type of testing that simulates network latency and tests how an application performs under stress by subjecting it to various loads. It helps determine the application's response time, scalability, and reliability under different levels of user activity, ensuring it can handle the expected workload.

An effective incident response strategy includes communication and collaboration, not assigning blame. It's important to respond promptly, work together, and learn from the incident to improve future responses. Ignoring or delaying an incident is not a recommended approach.

Test-Driven Development (TDD) emphasizes the principle of refactoring, where the codebase is continually adjusted and improved to enhance its functionality and maintainability. This ensures the code remains clean and efficient.

Agile methodology differs from traditional SDLC by involving customers at every stage, ensuring continuous feedback. This helps in addressing evolving customer needs and preferences, a limitation of traditional models.