OMG-OCUP2-ADV300 Exam Practice Test Instant Access

Question 1

Choose the correct answer:

Which capability Is provided by the Profile mechanism?

Astoring user-specific configurations of model settings

Bcreating new metamodel elements for specific purposes

Cadapting existing metamodel elements for specific purposes

Dconfiguring model libraries and a set of keywords to be used for a model

Answer : C

The Profile mechanism in UML provides the capability to adapt existing metamodel elements for specific purposes. Profiles allow modelers to extend the standard UML metamodel with additional semantics by defining stereotypes, tagged values, and constraints that are specific to a particular domain, platform, or methodology. This means that profiles tailor the existing UML metamodel elements to create domain-specific models without changing the underlying metamodel itself. This adaptation mechanism is described in the UML 2.x Superstructure and Infrastructure Specifications, which detail how profiles can be used to customize the UML for particular domains or purposes.

Question 2

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You are asked to provide UML model content such that other modelers may use the Classes of your model as modular, partial specifications to be more fully specified by their models. You decide to provide a Vehicle Class that represents a partial specification of automobiles and allows tailoring of this class through the other modelers' choices of kinds of propulsion such as a gasoline motor, an electric engine, or a manual cycle system. You want to limit which Class kinds the other modelers can choose as their propulsion system.

Which tactic appropriately exploits UML's syntax and semantics for modular reification?

AModel GasolineMotorVehicle. ElectricEngineVehicle. and ManualCyclingVehicle as specialized versions of your Abstract Class Automobile.

BModel Vehicle as a Template Classifier with a Class Parameter named Thrustor that is constrained to be a derivative of an Abstract Class PropulsionSystem

CModel Vehicle as a Class with a Property named thrustor of Type Enumeration Class Thrustor that has Enumeration Literals GasolmeMotor. ElectncEngme. and ManualCycler.

DModel three separate Packages named GasolineMotor Vehicles. ElectricEngme Vehicles, and ManualCyclmg Vehicles and Package Import into each of these the Package with your Vehicle Class.

Answer : B

The approach described in option B aligns with the concept of template classifiers in UML, which allows for the creation of parameterized elements that can be instantiated with different arguments. By modeling Vehicle as a template classifier with a parameter named Thrustor, other modelers can instantiate this template with their chosen propulsion system, as long as it is a type that specializes the PropulsionSystem abstract class. This method provides the flexibility needed for modelers to tailor the Vehicle class to different propulsion systems while enforcing that only derivatives of PropulsionSystem can be used as the actual parameter for Thrustor. This tactic of using template classifiers and class parameters is an application of UML's syntax and semantics for creating modular and customizable models. This practice is detailed in the UML 2.x Superstructure Specification, particularly in the sections describing template classifiers and their parameters.

Question 3

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What is true about a MOF 2.x Model?

AIt is always a valid UML 2 x Model

BIt can be a valid UML 2.x Model, when certain limitations are observed.

CThe visual representation resembles a UML 2.x Model, but the underlying Model is a MOF-Model.

DThere is a subtle difference between it and a UML 2.x Model, but only theoretical computer scientists care.

Answer : B

A MOF (Meta Object Facility) 2.x Model is not always a valid UML (Unified Modeling Language) 2.x Model. The MOF 2.x and UML 2.x serve different purposes and have different scopes of application.While UML is a general-purpose modeling language used to define software systems, MOF is a language for defining metamodels, which can include UML itself1.

The MOF 2.x specification provides the basis for metamodel definition in OMG's (Object Management Group's) family of modeling languages, which includes UML.However, it is based on a simplification of UML 2's class modeling capabilities1.MOF is designed to be simpler, directly implementable, and provides a set of CORBA interfaces for manipulating meta objects2.In contrast, UML is used as a general-purpose modeling language with potentially many implementation targets2.

Therefore, a MOF 2.x Model can be a valid UML 2.x Model when certain limitations are observed, such as adhering to the simplified class modeling capabilities that MOF is based on.This means that while a MOF model can resemble a UML model in terms of visual representation, it is fundamentally a MOF model, and its validity as a UML model depends on the extent to which it conforms to the UML specifications

Question 4

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An organization has determined that they want to add the capability to create and add requirement elements to their UML models. They also want to create a unique relationship for tracing requirements to other model elements.

What is the appropriate approach to do this?

AUse the requirement element and relationship defined in the UML specification.

BCreate a profile that stereotypes Class as requirement and Dependency as the relationship.

CCreate a new MOF metamodel that includes UML and adds the desired requirement element and relationship.

DAssign tag values that ascribe the desired requirement type to a UML Requirement and Dependency relationship.

Answer : B

UML allows the introduction of new concepts that are not part of the standard UML metamodel by creating a profile. To add capabilities for modeling requirements and tracing relationships in UML, a profile can be created where a Class is stereotyped to represent a requirement, and a Dependency is stereotyped to represent the trace relationship. This approach is both practical and conforms to the UML standard's mechanisms for extending the language. It is a common practice to create such profiles for requirements engineering within the UML framework. This conforms to the UML 2 Superstructure Specification, which provides guidelines on creating and applying profiles and stereotypes.

Question 5

Choose the correct answer:

Which statement is correct about redefinition of simple States?

AA simple State cannot be redefined

BA simple State can be redefined by excluding it in a redefined StateMachine.

CA simple State can be redefined as a composite State with one or more Regions.

DState Redefinition is not a UML capability.

Answer : B

In UML, a simple State can indeed be redefined, but the specifics of how it is redefined matter:

A is incorrect as redefinition of States, including simple States, is permitted.

B is correct. A simple State can be effectively removed or altered through redefinition in a derived StateMachine, which could include changing its type or characteristics.

C suggests that a simple State can be turned into a composite State. While theoretically possible in the context of redefinition, this option might be considered a significant alteration that could be misleading without additional context.

D is incorrect; UML does support State Redefinition.

UML Specification, particularly the sections on Redefinition and StateMachines.

Detailed rules on state redefinition are outlined in the UML 2.5 Documentation, specifically under StateMachine specializations.

Question 6

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Consider the following diagram fragment:

Which statement is correct?

AThe set named 'b' is contained in a set named 'part'.

BThe set named 'b' has one subset, that contains the parts of B.

CThe property 'subsets part' specifies that b only partially defines A

DThe constraint limits the elements of b to be from a predefined set of parts

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 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.

Question 7

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Consider the following modeling scenario:

Which statement is correct about the modeling scenario?

AThe Profile 'Versioning' can not be applied to two Packages in a model at the same time

BThe Profiles must be applied to the Model 'My Application' instead of the Packages.

CTwo Profiles are correctly applied to two Packages.

DThe Profiles must be members of the namespace of the Model 'My Application'.

Answer : C

In UML, profiles are applied to specific model elements to adapt the UML metamodel to different domains or platforms. The provided diagram shows a UML package diagram within which the Versioning profile is applied to the 'Business Logic' package, and the DBProfile is applied to the 'Data' package. This is a correct use of profiles in UML as they allow the customization of parts of a model by applying additional constraints and stereotypes to specific packages or classes. There is no restriction in UML that a profile cannot be applied to multiple packages in the model simultaneously, and profiles do not necessarily need to be members of the namespace of the model they are applied to; they can be defined externally. Therefore, the scenario presented is a correct application of two different profiles to two distinct packages within the same model, conforming to the UML 2.x Superstructure Specification.

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