Free ISQI CPSA-FL Exam Dumps Questions & Answers

Name the three most important fields of template-based architecture documentation. (Choose three.)

• A.  To use a standardized document structure
• B.  To use copyright templates for a consistent description of project/system meta information within documents and source codes
• C.  To describe individual architectural modules and their external interfaces (black boxes)
• D.  To reuse code and test case templates
• E.  To describe module structures (white boxes)

Concerning external interfaces, Postel's law suggests: "Be conservative in what you do, be liberal in what you accept from others." Assume that Postel's law has been consistently applied in your system. (Assign all answers.)

Correct Answer:

Explanation:
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.

Which of the following statements regarding iterative and incremental design are correct? Please name the three statements that fit the best. (Choose three.)

• A.  The iterative approach helps to detect design problems at an earlier stage.
• B.  If iterative design is used; the customer will be less involved.
• C.  If incremental design is used; key functionality is considered as early as possible.
• D.  Iterations help to deal with uncertainties.
• E.  Iterative design leads to project delays.
• F.  If the incremental approach is used, risks are detected at a later stage.

Which four of the following items can be building blocks of a software architecture? (Choose four.)

• A.  a processor
• B.  a test harness
• C.  a local variable
• D.  a method/procedure/function/operation
• E.  an algorithm
• F.  a component
• G.  a package
• H.  a class

Conway's law sometimes is referred to as "If you have four teams working on the compiler, you'll get a 4-pass compiler." Which interpretations of this law are true, which are false? (Assign all answers.)

Correct Answer:

Explanation:
The interpretations of Conway's law that are true and false are as follows:
* True:
* Structures of software architecture and associated organization are congruent (B).
* Software architecture is particularly important when creating compilers .
* False:
* You need four teams to build a compiler (A).
* Certain types of software are not suitable for the use of software architecture (D).
Conway's law suggests that the structure of systems designed by an organization will mimic the communication structures of that organization1. This means that the way teams are organized and communicate will influence the design of the software they are developing. Here's an explanation of each interpretation:
* True Statements:
* (B): The law implies that the technical structure of a system will reflect the social boundaries of the organization that produced it, which means the architecture of the software and the
* organization will be congruent1.
* : When creating complex systems like compilers, the architecture is influenced by organizational structures, making it crucial to consider how teams are organized and how they communicate1.
* False Statements:
* (A): The number of teams does not dictate the necessity of a multi-pass compiler; it's a metaphorical example to illustrate that organizational structure can influence technical design1.
* (D): All types of software can benefit from thoughtful software architecture; the statement is a misinterpretation of Conway's law, which does not deem any software unsuitable for architectural practices1.
Conway's law is a valuable consideration in software engineering, reminding us that organizational decisions can have a significant impact on the design and functionality of the software.
References:
* Wikipedia article on Conway's law1.
* ThinkingLabs article on Shades of Conway's Law2.
* Dovetail article on What Is Conway's Law