Which techniques are suitable for requirements validation?

The choice of walk-through and validation using an interface prototype as suitable techniques for requirements validation is grounded in the purpose and process of these activities. A walk-through involves reviewing the requirements with stakeholders in a structured manner, allowing for direct feedback and ensuring that the requirements accurately reflect the stakeholders' needs. This collaborative approach aids in identifying any ambiguities or misunderstandings early in the development process.

Validation using an interface prototype further solidifies this choice, as prototypes provide a tangible representation of the requirements. Stakeholders can interact with a working model, which helps them visualize and assess whether the interface meets their expectations and requirements. This hands-on experience is invaluable for confirming that the requirements are feasible and aligned with user needs.

In contrast, the other techniques listed may be more relevant to different aspects of requirements management. For instance, ranking and construction of user stories focus on prioritizing functionalities rather than validating them. Inspection typically ensures compliance with standards but does not engage stakeholders actively, while surveys gather feedback but may lack the interactive and immediate nature of direct validation techniques like prototypes. Therefore, the combination of walk-throughs and prototypes directly addresses the validation needs effectively.