Choose the correct answer: What must a modeler do to use an Action that coordinates other Actions?
Correct Answer: B
To orchestrate multiple actions within UML, a modeler should use StructuredActivityNodes: * A.Extending Behavior and adding desired Actions is not specifically about coordinating multiple actions; it's about defining new behaviors. * B.Correct. StructuredActivityNodes are a part of UML that provides a mechanism to group a set of actions together and manage the data flows between them, thus coordinating the actions. * C.Using the standard Action and adding desired tag values does not inherently coordinate actions. * D.Extending Action and specifying constraints to be relaxed or removed does not directly relate to coordinating other actions. References: * UML Specification: Activities section, which describes the use of StructuredActivityNodes. * The use of StructuredActivityNodes for coordinating actions is elaborated in the UML 2.5 Documentation under Activity Diagrams.
Question 7
Choose the correct answer: Consider the following diagram fragment: Which statement is correct?
Correct Answer: A
In UML, the{subsets}keyword is used to indicate that one property is a subset of another property. In the provided diagram fragment, the association end-b {subsets part}indicates that the propertybon classAis a subset of the propertyparton classB. This means that the elements associated withAthroughbare contained within the larger set associated withBthroughpart. This kind of relationship is typically used in more complex class models where a part-whole hierarchy is represented, and it allows the model to show that certain associations are more specific subsets of a more general association. This usage is explained in the UML 2.x Superstructure Specification, where the semantics of association subsets are defined.
Question 8
Choose the correct answer: What is a reason for fUML lo be compact?
Correct Answer: A
The reason for fUML to be compact is to facilitate the definition of clear semantics. A smaller, more focused subset of UML allows for a more precise and unambiguous specification of the execution semantics. This clarity is essential for ensuring that models are executed consistently and as intended across different tools and platforms2. The compact nature of fUML helps inachieving this goal by limiting the scope to the essential elements necessary for execution, thereby reducing complexity and potential for misinterpretation.
Question 9
Choose the correct answer: Consider the following diagram: When this behavior is executed, which event will occur last?
Correct Answer: C
The sequence diagram depicts interactions over time between different entities. To determine the order of events, one must follow the flow of messages from top to bottom, as this represents the chronological order in which these interactions occur. In the given diagram, 'HH' is a lifeline that is eventually destroyed, indicated by the finalization (cross) symbol at the bottom of its lifeline. The reception of 'z' is an event that happens between the lifelines labeled 'xX' and 'yY', and the reception of 'w' is an event that happens between 'q:Q' and 'p:P'. Since sequence diagrams are read from top to bottom, the message 'w' is the last one before the destruction of 'q:Q', which isindicated by the destruction occurrence specification (cross) at the bottom of 'q:Q'. Therefore, the last event that occurs according to the diagram is the reception of 'w'. References to UML 2 specifications include: * UML 2.5 Specification (formal/2017-12-05), by Object Management Group, which describes the semantics of sequence diagrams, interactions, and the interpretation of message flows and lifeline termination. * Sequence Diagrams in UML, which explain the order of interaction and message passing between lifelines.
Question 10
Choose the correct answer: Which UML element specifies a set of formal parameters that will be substituted by actual parameters?
Correct Answer: B
A template signature in UML specifies a set of formal parameters that can be substituted by actual parameters when a template is instantiated. This template signature is part of a templateable element, which is the element that can be parameterized using the template mechanism in UML. The template signature defines the formal template parameters that will be replaced by actual values or types when a bound element is created from the template. This concept is detailed in the UML 2.x Superstructure Specification, particularly in the sections describing templates and how they are used to create reusable and customizable model elements.
