Adherence to the Single Responsibility Principle (SRP) in software design means that each module or class should have a single reason to change. When this principle is followed, it simplifies code, making it easier to understand and maintain. Changes to one responsibility do not affect others, resulting in improved maintainability.

In white box testing, the "Code" is tested to check if it performs correctly. This involves checking that all statements and conditions in the code are tested, ensuring comprehensive code coverage.

Configuration Status Accounting in SCM is responsible for keeping track of all changes made to the system. It provides visibility into the status of the system's components and helps in monitoring and reporting on changes.

A key characteristic of Black Box Testing is that it is performed without knowledge of the internal code or system's internal logic. Testers focus on the inputs, outputs, and behavior of the software without delving into its implementation details.

In Agile development, prototyping often starts with building a "Vertical" prototype. This prototype includes a limited set of key features that provide a deep exploration of specific functionalities. It's not a final or complete product but serves to demonstrate essential aspects of the system.

The Incremental model involves developing a system partially in small, manageable portions. After each increment, further development is determined based on the feedback and the goals achieved in the previous increment. This approach allows for early, partial implementations and continuous refinements.

The Microservices architecture style involves dividing the system into smaller sub-systems that operate as separate services. Each of these services performs specific functions and can communicate with each other, creating a more modular and flexible software architecture.

SQA plays a critical role in risk management by identifying potential risks in the software development process and then developing mitigation plans to address these risks. This proactive approach helps minimize the impact of risks on the project.

Reverse engineering allows the development team to analyze the legacy system's code, understand its architecture, and plan modernization efforts effectively. It provides insights into the existing codebase, aiding in the upgrade process.

System testing is conducted to ensure that the developed software meets its requirements and functions as intended. It tests the entire system as a whole to verify that all components work together correctly.