Choose the correct answer :What characterizes the generalization relationship between two Classifiers where the child can NOT be substituted for the parent?
Answer(s): C
In UML, the isSubstitutable property of a generalization relationship indicates whether instances of the child classifier can be used wherever instances of the parent classifier are expected, that is, whether the subclass is substitutable for the superclass. When this property is set to false, it means that the child classifier cannot be substituted for the parent classifier. This property is part of the UML metamodel for generalization and affects how inheritance is interpreted in terms of substitutability, as described in the UML 2.x Superstructure Specification.
Choose the correct answer :Consider the following diagram fragment:Which statement is correct?
Answer(s): 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 property b on class A is a subset of the property part on class B. This means that the elements associated with A through b are contained within the larger set associated with B through part. 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.
Choose the correct answer :What does a lower multiplicity of one for an end of an n-ary Association imply?
In UML, the multiplicity of an association end specifies how many instances of the class at that end can participate in a single association. A lower multiplicity of one (1) at one end of an n-ary (where n > 2) association implies that there must be at least one link that combines the values of the other ends, but it doesn't require that a link exists for every possible combination. Therefore, it's possible for some combinations to exist as links, while others do not, which is indicated by the option that links combining the values of the other ends may exist or may not exist. This interpretation is consistent with the definition of multiplicity in associations as outlined in the UML 2.x Superstructure Specification.
Choose the correct answer :A modeler wants to develop a customization for a standard UML tool that provides the ability to specify CORBA physical Components.Which approach should the modeler use?
To provide the ability to specify CORBA physical components within a UML tool, the most appropriate approach is to create a UML profile that includes stereotypes, tagged values, and constraints that reflect the characteristics and requirements of CORBA components. Applying this profile to a UML model would extend the semantics of UML to support CORBA-specific concepts without modifying the UML metamodel itself. This approach allows the modeler to leverage the existing UML tooling while incorporating the additional semantics required for CORBA components. This practice is supported by the extensibility mechanisms provided by UML, as described in the UML 2.x Superstructure Specification, which outlines how to create and apply profiles.
Choose the correct answer :What should a modeler do lo represent specific hardware environments In a deployment model?
To represent specific hardware environments in a deployment model, a modeler should create a UML profile that includes the necessary hardware stereotypes with applicable details. A profile allows the modeler to extend the standard UML metamodel to include domain-specific elements that can be applied to deployment models. These stereotypes can represent different types of hardware components and their attributes, which can then be used to model the physical aspects of the deployment environment. The creation and application of profiles are supported by the UML 2.x Superstructure Specification, which details how to tailor UML to particular domains or platforms using profiles.
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