A requirements engineer is documenting the process for a new online food ordering system. The goal is to create a model that clearly shows the responsibilities of different actors (Customer, Kitchen, Delivery Driver) and the flow of activities from placing an order to final delivery. The model must be easily understood by non-technical stakeholders, such as restaurant managers. Which modeling approach and diagram type would be most effective for this purpose?
Answer and explanation
Correct answer: C
A UML Activity Diagram is ideal for modeling process flows. The use of swimlanes specifically addresses the requirement to clearly delineate responsibilities among different actors (Customer, Kitchen, Delivery Driver), making it highly effective for communicating the process to non-technical stakeholders. While state and class diagrams are useful, they do not capture the flow of activities and responsibilities as effectively as an activity diagram with swimlanes.
Question 2
During a project to develop a control system for an automated warehouse, the development team is using an iterative process. Stakeholders are available for frequent feedback. However, there is a high degree of uncertainty about the optimal workflow for the robotic arms. The primary goal is to discover the most efficient operational logic through experimentation. Which RE process configuration is most suitable for this context?
Answer and explanation
Correct answer: B
The scenario highlights key characteristics that align perfectly with a Participatory RE Process: an iterative approach, high uncertainty requiring exploration, and strong stakeholder involvement for feedback. This combination is defined as Iterative, Exploratory, and Customer-Specific. A contractual process is too rigid, and a market-oriented process is irrelevant as this is a specific internal system.
Question 3
A project team is developing a medical device for monitoring patient vitals. Regulatory standards require that every software feature must be traceable to a specific, approved stakeholder requirement, and every requirement must be linked to a set of test cases that verify its implementation. The project manager needs to produce a report for an audit. Which requirements management practice and work product are essential for fulfilling this regulatory demand?
Answer and explanation
Correct answer: D
The core need described is the ability to demonstrate links between different work products (requirements, features, test cases) for regulatory and audit purposes. This is the definition of traceability. A Requirements Traceability Matrix (RTM) is the standard work product used to document these links explicitly. The other options are important management practices but do not directly address the need to trace and audit the relationships between artifacts.
Question 4
A business analyst is writing requirements for a new CRM system. One of the requirements is stated as: 'The system should be fast.' Why does this requirement violate the quality criterion of being 'verifiable'?
Answer and explanation
Correct answer: A
A requirement is verifiable if it is possible to determine, through a cost-effective process, whether the requirement has been met. The term 'fast' is subjective and lacks specific, measurable criteria. To be verifiable, it should be restated with quantifiable metrics, such as 'The system shall load the customer dashboard in under 2 seconds for 95% of requests'.
Question 5
Multiple answers
During an elicitation workshop for a new banking application, the Head of Marketing requests a feature for 'gamified' user achievements. The Chief Security Officer states that this could introduce vulnerabilities and goes against the company's risk-averse policy. The requirements engineer identifies this as a conflict. According to the CPRE syllabus, which TWO of the following conflict types are most clearly represented in this scenario? (Select TWO)
Answer and explanation
Correct answers: B, D
An interest conflict arises from perceived or actual competition over substantive interests. Here, Marketing has an interest in user engagement, while Security has an interest in minimizing risk.
A value conflict is caused by different criteria for evaluating ideas or behavior. Marketing values innovation and user engagement, while Security values stability and risk avoidance. These are fundamentally different value systems.
Question 6
True or False: In Requirements Engineering, the 'system boundary' defines the parts of the environment that are relevant for understanding the system, while the 'context boundary' separates the system itself from its environment.
Answer and explanation
Correct answer: B
The statement has the definitions reversed. The 'system boundary' separates the system from its environment (the context). The 'context boundary' separates the RE-relevant part of the environment from the rest of the world that is considered irrelevant.
Question 7
A team is developing a smartphone app for tourists. The product owner wants to discover features that would surprise and delight users, which are not typically requested or expected. According to the Kano model, the team is trying to identify 'Delighters'. Which elicitation technique is most suitable for discovering this type of requirement?
Answer and explanation
Correct answer: C
Delighters (or excitement factors) are features that users do not expect and often cannot articulate. Gathering techniques like surveys are better for identifying Satisfiers (performance factors). To uncover innovative Delighters, creativity-focused techniques like brainstorming, prototyping, and storyboarding are required to explore new possibilities beyond the users' current frame of reference.
Question 8
Case Study
A mid-sized regional airline, 'AirConnect', wants to develop a new mobile application for flight booking and management. Their current system is a web-only portal that is not mobile-friendly. The primary business goal is to increase direct bookings by 25% and improve customer satisfaction.
The project team has identified several key stakeholder groups: travelers (end-users), marketing department, IT operations, and the company's executive board. The marketing team insists on a highly interactive, visually rich user interface with promotional pop-ups. The IT operations team is concerned about performance and the load on their legacy backend systems. The executive board has set a strict, non-negotiable deadline of 6 months for the first release.
Given the tight deadline, the need to balance conflicting stakeholder interests (visuals vs. performance), and the fact that this is a customer-facing application for a broad, non-technical user base, the lead requirements engineer must choose an appropriate approach for validating the UI/UX requirements before development begins.
Which validation technique would be most effective in this situation to quickly gather user feedback and align stakeholder expectations?
Answer and explanation
Correct answer: B
Given the conflicting views on UI and the non-technical nature of many stakeholders (travelers, marketing), a visual and interactive prototype is far more effective than a text-based document. An exploratory prototype (like a mock-up) allows for rapid feedback on the user experience, helps resolve the visual vs. performance debate by making it tangible, and can be created quickly to respect the tight deadline. Formal inspections are time-consuming and less effective for validating user interface feel and flow.
Question 9
A project is creating a requirements specification document. The team has decided to create a central document that defines all context-specific terms, acronyms, and abbreviations to ensure a shared understanding among all stakeholders. What is this work product called?
Answer and explanation
Correct answer: C
A glossary is a central collection of definitions for context-specific terms, abbreviations, and acronyms. Its primary purpose is to create a shared understanding and ensure consistent use of terminology throughout the project.
Question 10
A team is defining a life cycle model for their requirements. They need to represent the different stages a requirement can be in, such as 'Drafted', 'In Review', 'Approved', and 'Implemented'. Which diagram is most suitable for visualizing these states and the valid transitions between them?
Answer and explanation
Correct answer: B
A State Machine Diagram (or Statechart) is specifically designed to model the behavior of an object, showing its various states and the events that trigger transitions from one state to another. This is a perfect fit for defining a requirement's life cycle. The diagram below shows a simple example.
