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

Answer : D

In UML, ValueSpecifications are used to specify the value of an element. The UML 2 Specification does not define a metaclass named StringExpression. Instead, it provides a metaclass named OpaqueExpression, which can be used when an expression is written in a language that is not directly interpretable by the model. Since there is no metaclass called StringExpression in the UML 2 Specification, there is no explicitly intended use for it within the UML metamodel. The absence of this metaclass suggests that any use of a concept called 'StringExpression' would not conform to standard UML 2 practices and would likely be part of an extension or profile, not the core UML metamodel.

Answer : C

In UML, profiles are mechanisms to extend the UML for a specific domain or purpose. The UML specification allows for one profile to reuse or import elements from another profile. This enables modularity and encourages reusability of profile elements across different domains. Additionally, one profile may extend the stereotypes or metaclasses defined in another profile, which allows for the creation of layered profiles where each layer adds its own specificities. This is a common practice in software and systems modeling to cater to different aspects of a system within separate profiles, which are then integrated to form a comprehensive model. The capability to reuse and extend profiles is defined in the UML 2.x Superstructure Specification, which gives guidelines on how to define and use profiles within UML.

Answer : C

In UML, when an operation is marked with the term {guarded}, it means that the operation is subject to a concurrency constraint. It specifies that the operation cannot have overlapping executions; in other words, if the operation is already in execution, a new attempt to start it will have to wait until the current one completes. This prevents race conditions and ensures thread safety for that operation when dealing with concurrent accesses in multi-threaded environments. This interpretation is based on the UML 2.x Superstructure Specification, which describes how operations can be marked with constraints to define their behavioral features in terms of concurrency.

Answer : A

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.

Answer : C

In UML 2.5, a NamedElement can have a name attribute, which is a string representing the element's name, and a nameExpression attribute, which is a ValueSpecification used to specify the element's name in a more dynamic way. The presentation of the name of a NamedElement in a tool that conforms to the OMG specification could either be the literal name (as specified in the name attribute) or the evaluated expression from the nameExpression property. Therefore, a tool may choose to present either the simple name or the evaluated expression or allow toggling between the two. The specification does not mandate a single fixed presentation, allowing for flexibility in how tools display the name. This conforms to the OMG's UML 2.5 specification, which describes the properties of NamedElement and their presentations within tools.

Answer : C

The UML diagram illustrates two types of reproduction for cattle: natural and assisted. In natural reproduction, a bull (xy) and a cow (xx) result in a new cattle (result), which aligns with biological principles. The same principle applies to assisted reproduction, where the donor is also cattle (xy), and the result is a new cattle. Since both Ferd Bull and Don Donor are specialized types of Cattle, and the result of both reproductions is Cattle, it implies that both xx and xy are of type Cattle, but within the context, xx is specifically a Cow. Therefore, xx is a Cow, xy is Cattle (which can be a Bull or Donor), and the result is also Cattle. This interpretation aligns with the principles of UML where specific instances (like Ferd Bull and Don Donor) are instances of the more general classifier Cattle.

Answer : C

Assuming the system is in StateA1, the behaviors (or actions) executed when moving to StateC would begin with any behaviors associated with internal transitions or exit actions within StateA1. Transition a6 would be the trigger to go from StateA1 to StateA2, executing a4 (the exit action of StateA1) before the transition. Upon exiting StateA altogether (a3 is the exit action for StateA), the system would follow the transition labeled a1 to StateB, executing a7 as the entry action of StateB. Then, the transition from StateB to StateC would occur, likely with an internal trigger within StateB or by completion, followed by a11 to complete the transition into StateC. The actions follow the flow of state transitions and the associated entry and exit actions as prescribed by UML state machine behavior specifications.