OMG Certified UML Professional 2 (OCUP 2) - Advanced Level OMG-OCUP2-ADV300 Exam Questions

Answer : C

The provided diagram fragment shows what appears to be Components or Classes with dashed arrows pointing towards them. Typically in UML, a dashed arrow with an unfilled arrowhead represents a Realization relationship, which is used to show that an element (such as an interface) is realized by another element (such as a class or component). However, when we are talking about Classes like 'EventRegistration,' 'MessagePacket,' 'Attendee,' and 'Session' which seem to share a common nature or purpose with 'EmailServices,' these relationships are more appropriately modeled as Generalizations, indicating that they inherit from a common superclass or implement a common interface. Realizations are typically not used in this context. Hence, the dashed arrows in the diagram should be solid lines representing Generalization, not Realization. This answer aligns with the UML 2.x Superstructure Specification, which provides guidance on the usage of Realization and Generalization relationships in class diagrams.

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.

Answer : B

In UML, a stereotype is a mechanism that extends the vocabulary of the UML in order to create new model elements. The given profile fragment defines a stereotype architecture decision that extends the metaclass Class. This stereotype includes three properties: Complexity, Risk, and Status, each typed by specific enumerations: Rank and Status. When a stereotype is applied to a UML element, it does not create physical attributes on the element; instead, it enables the element to carry additional information as specified by the stereotype --- in this case, as Stereotype Properties. These properties are effectively tagged values that are associated with the stereotyped element. Hence, when a class is stereotyped as an architecture decision, it will have the ability to hold values for Complexity, Risk, and Status according to the types defined by the enumerations in the profile. This is consistent with the rules defined in the UML 2.x Superstructure Specification for profiles and stereotypes.

Answer : B

In addition to ObjectFlow, which is used to denote the flow of objects between activities in a UML Activity diagram, data movement can also be facilitated through:

A . Pin is a point on a node that is used to accept or provide objects or data, but does not move data by itself.

B . Correct. Variables can be used to hold and move data within an activity, facilitating state maintenance or transitions between different actions.

C . Property, while it holds data, typically pertains to classes or components, not activities.

D . ControlFlow dictates the order of execution but does not inherently move data.

UML Specification: Activity Diagrams section.

Details on how data can be managed within activities can be explored in the UML 2.5 Documentation, particularly under Activity and Object Nodes.

Answer : C

The UML model fragment that best supports the project's requirements for collection class design is one that allows the fixed length of the collections to be specified but also permits flexibility for collections longer than 25 elements. In Option C, the ClarusCollection class is shown as a template class with a template parameter Size set to a default of 25. However, the dashed lines and the separate box for Type and Size indicate that while there is a default value, it can be overridden. This means that the Size can be parameterized, thus allowing the creation of ClarusCollection instances with different fixed lengths, not just 25. This design will enable most collections to be created with the default size of 25, but also allows for creating collections with sizes greater than 25, providing the flexibility required by the project's requirements. This adheres to the UML 2.x specification on templates and parameterization.

Answer : C

In the given diagram, myType1 is shown redefining prop1, which was originally of type Integer. Given that Integer is a subtype of Number, and myType1 is used in a redefinition context, it implies that myType1 must also be a subtype of Number. In UML, when a property is redefined, the redefining property must be type compatible with the property it redefines. Therefore, myType1 could be substituted by any subtype of Number, which includes Integer, Real, and all their subtypes (Short, Long, Float, Double, etc.). This is based on the UML principle of type conformance in property redefinition, as specified in the UML 2.x Superstructure Specification.

Answer : D

In UML, the keyword isSubstitutable is used to indicate that instances of one classifier may be used in place of instances of another classifier. This concept is commonly applied in the context of generalization, where a subclass can be substituted for its superclass. The substitutability is a fundamental principle of object-oriented design, particularly in the Liskov Substitution Principle, which states that objects of a superclass should be replaceable with objects of a subclass without affecting the correctness of the program. This principle is reflected in UML's support for polymorphism, which is implicit in the generalization relationships between classifiers.