iSQI CPSA-FL Dumps

A) FalseB) FalseC) FalseD) TrueE) TrueF) False

Postel’s law, also known as the robustness principle, is a guideline in software engineering that advises to "be conservative in what you do, be liberal in what you accept from others"1. This principle has implications for system design and interaction with external interfaces:

A) Response time of the system is reduced: This is false. Postel’s law does not directly relate to the response time of a system1.

B) Implementation effort increases: This is false. Being liberal in what is accepted can actually simplify implementation because the system is designed to handle a wider range of inputs without failure1.

C) Usability of the system is reduced: This is false. Postel’s law aims to increase robustness and interoperability, which can enhance usability by making the system more resilient and accommodating1.

D) Robustness of the system is increased: This is true. By being conservative in outputs and liberal in inputs, the system becomes more robust, handling a variety of inputs without error1.

E) The integrity of the data transferred via interfaces is increased: This is true. Accepting a wide range of inputs and adhering strictly to output specifications helps maintain data integrity across different systems1.

F) Availability of the system is reduced due to potentially bad quality of input data: This is false. Postel’s law suggests that the system should be designed to handle poor quality input data gracefully, thus maintaining availability1.

Applying Postel’s law helps create systems that are more tolerant of input variations and strict in their outputs, contributing to overall system robustness and reliability1.

A) BeneficialB) BeneficialC) Not BeneficialD) Not BeneficialE) Beneficial

In the context of documenting the software architecture for a large development project with multiple teams, the following measures can be considered beneficial:

A) Dividing the whole architecture documentation into sub-documents for each of the three sub-projects can be beneficial as it allows each team to focus on their specific area while maintaining a modular approach to documentation1.

B) Predefining the structure of the entire architecture documentation ensures consistency and coherence across all sub-projects. It helps in maintaining a uniform standard and facilitates easier integration of the sub-documents into the overall project documentation1.

C) Leaving the decision regarding the documentation structure to the team that first begins the documentation of its sub-project is not beneficial. This approach can lead to inconsistencies and may result in a lack of uniformity across the project’s documentation1.

D) Rejecting word processing for the documentation because it is not connected with the source code is not beneficial. While it is important to link documentation with the source code, word processing tools can still be used effectively for creating comprehensive documentation. Tools like version control can be used to maintain a connection between the documentation and the source code1.

E) Having developers document their parts of the architecture documentation using source code can be beneficial. This approach ensures that the documentation is close to the implementation and can be more easily kept up-to-date1.

These measures align with the best practices for software architecture documentation as per the iSAQB® SOFTWARE ARCHITECTURE – FOUNDATION LEVEL documents, which emphasize the importance of clear, consistent, and coherent documentation in software architecture1.

The term 'coupling' in software architecture refers to the degree of direct knowledge that one component has about another. This can be reflected in:A. A building block uses an interface of another building block. - This represents a form of coupling where components interact through well-defined interfaces, influencing the level of dependency between them.D. A building block uses internal data structures of another building block. - This indicates a higher degree of coupling, as it involves direct knowledge of another component’s internal workings, which is generally discouraged to maintain modularity and ease of maintenance.

These answers are based on fundamental software architecture and design principles widely recognized in the field.