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Answer : D

Portability refers to the ease with which software can be transferred from one environment to another. It is a critical factor in a software product's adaptability as it determines how well the software can function across different platforms, operating systems, or hardware configurations. High portability ensures that the software can be easily adapted to new environments without significant modification, thereby extending its usability and market reach. Reference:

ISO/IEC 25010:2011, Systems and Software Engineering - Systems and Software Quality Requirements and Evaluation (SQuaRE) - System and Software Quality Models.

Sommerville, Ian. 'Software Engineering.' 10th Edition, Addison-Wesley, 2015.

Answer : D

A sprint retrospective is a meeting held at the end of a sprint in Agile methodologies, where the team reflects on the past sprint to identify and agree on continuous improvement actions. The goal is to improve the process, teamwork, and methods used in the project. This may result in action items aimed at making the next sprint more efficient and productive. Reference: Schwaber, Ken, and Sutherland, Jeff. 'The Scrum Guide'.

Answer : A

Pair programming is a practice where two developers work together at one workstation. One writes the code (driver) while the other reviews each line of code as it is written (observer or navigator).

Defect Reduction:

Immediate Review: The observer can catch defects as they are introduced.

Shared Knowledge: Two perspectives reduce the chance of oversight.

Collaboration: Encourages more thorough and thoughtful coding practices, reducing the number of defects.

Empirical Evidence: Studies have shown that pair programming can significantly reduce the number of defects compared to solo programming.

Answer : A

In the context of software safety, 'Level of Control' (LOC) is used to classify software based on the severity of the consequences of its failure. LOC I - Autonomous Time Critical is assigned to software where failure could result directly in a mishap with significant consequences. This level demands the highest safety controls and rigorous testing to mitigate risks.

RTCA DO-178C, Software Considerations in Airborne Systems and Equipment Certification.

NASA-STD-8739.8, Software Assurance Standard.

Answer : D

A software requirements specification (SRS) for software that is part of multiple systems should include external interfaces. This ensures that the software can interact correctly with other systems and components, defining how the software will communicate with other systems, devices, or external data sources.