QUESTION NO: 1
Select the two most appropriate methods for evaluating the reliability of a software system. (Choose two.)
Select the two most appropriate methods for evaluating the reliability of a software system. (Choose two.)
Correct Answer: D,E
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QUESTION NO: 2
Which of the following statements about the coupling between building blocks are correct? (Assign all answers.)
Which of the following statements about the coupling between building blocks are correct? (Assign all answers.)
Correct Answer:
Explanation:
A) CorrectB) IncorrectC) CorrectD) CorrectE) IncorrectF) Incorrect
The concept of coupling between building blocks is crucial in software architecture, and the iSAQB SOFTWARE ARCHITECTURE - FOUNDATION LEVEL provides guidance on this topic. Here's an analysis of the statements based on the curriculum:
A) A high degree of coupling of a building block reduces its reusability: This is correct. High coupling means that a building block is heavily dependent on other components, which can limit its ability to be reused in different contexts1.
B) Low coupling of a building block improves the ability to meet functional requirements: This statement is incorrect. While low coupling can contribute to a more maintainable and flexible architecture, it does not directly improve the ability to meet functional requirements1.
C) Low cohesion often leads to high coupling: This is correct. Cohesion refers to how closely related the responsibilities of a module are. Low cohesion can result in modules that perform a wide range of actions, which often leads to higher coupling with many other modules1.
D) Loose coupling often leads to less effort for making changes: This is correct. Loose coupling allows for easier modification of a system with minimal impact on other components, thus reducing the effort required for changes1.
E) For call dependencies, the degree of coupling is independent of the direction of the call: This statement is incorrect. The degree of coupling can be affected by the direction of the call, as it determines which module controls the interaction1.
F) In object-oriented programming languages, inheritance reduces coupling: This statement is incorrect.
Inheritance can actually increase coupling because it creates a direct dependency between the superclass and the subclass1.
These insights are aligned with the principles outlined in the iSAQB SOFTWARE ARCHITECTURE - FOUNDATION LEVEL curriculum, which emphasizes the importance of understanding and managing coupling for effective software architecture design1.
QUESTION NO: 3
Which of the following aspects are more of a domain-related nature, and which more of technical nature?
(Assign all answers.)
Which of the following aspects are more of a domain-related nature, and which more of technical nature?
(Assign all answers.)
Correct Answer:
Explanation:
The aspects that are more of a domain-related nature and those that are more of a technical nature are as follows:
* More technical:
* Choosing a database (A)
* Choosing a layout manager in a GUI (D)
* The average number of methods per class (E)
* More domain-related:
* Modelling a banking account (B)
* Legal constraints for the execution of a money transfer
* Specification of a calculation formula (F)
In software architecture, aspects can be categorized based on their relevance to the domain (the problem space) or the technology (the solution space). Here's an explanation of each:
* More Technical:
* Choosing a database (A): This is a technical decision based on factors like data volume, concurrency, performance, and technology stack.
* Choosing a layout manager in a GUI (D): This involves technical considerations about how user interface elements are arranged and managed on the screen.
* The average number of methods per class (E): This is a technical metric used in object-oriented design to assess complexity and maintainability.
* More Domain-Related:
* Modelling a banking account (B): This involves understanding the business rules and operations of banking accounts, which is domain-specific knowledge.
* Legal constraints for the execution of a money transfer : These are domain-related as they pertain to the legal and regulatory requirements of financial transactions.
* Specification of a calculation formula (F): This is typically domain-related because it involves the business logic and rules for performing calculations within the domain.
These distinctions are important for architects to consider when making design decisions, ensuring that both technical and domain-related aspects are adequately addressed.
References:
* Rozanski, N., & Woods, E. (2011). Software Systems Architecture: Working With Stakeholders Using Viewpoints and Perspectives. Addison-Wesley Professional.
* Fowler, M. (2002). Patterns of Enterprise Application Architecture. Addison-Wesley.
QUESTION NO: 4
Name the three most important fields of template-based architecture documentation. (Choose three.)
Name the three most important fields of template-based architecture documentation. (Choose three.)
Correct Answer: A,C,D
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QUESTION NO: 5
Which of the following statements regarding iterative and incremental design are correct? Please name the three statements that fit the best. (Choose three.)
Which of the following statements regarding iterative and incremental design are correct? Please name the three statements that fit the best. (Choose three.)
Correct Answer: A,C,F
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