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Free OMG-OCUP2-ADV300 Exam Braindumps (page: 6)

Page 5 of 24
PDF with 90 Questions

Choose the correct answer :
A project's requirements call for flexibility in the collection class design. Most of the collections will be a fixed length of 25 elements. However, allowance must be made in the design for collections that are a fixed length longer than 25.
Which model fragment supports the project's requirements?

A)



B)



C)



D)

  1. Option A
  2. Option B
  3. Option C
  4. Option D

Answer(s): C

Explanation:

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.



Choose the correct answer :
Consider the following modeling scenario:



Which statement is correct about the modeling scenario?

  1. The Profile "Versioning" can not be applied to two Packages in a model at the same time
  2. The Profiles must be applied to the Model "My Application" instead of the Packages.
  3. Two Profiles are correctly applied to two Packages.
  4. The Profiles must be members of the namespace of the Model "My Application".

Answer(s): C

Explanation:

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.



Choose the correct answer :
In addition to stereotypes, which UML elements can a profile define?

  1. all of the UML elements
  2. all of the UML Structured Classifiers
  3. Class. DataType. Enumeration
  4. Class. DataType. Enumeration. Object. Component

Answer(s): C

Explanation:

A UML profile can define several different elements to extend the UML for a specific domain, platform, or purpose. Besides stereotypes, a profile can define DataTypes and Enumerations, which can be used within Stereotypes to type the tagged values. A profile can also define Classes, which can be used as base classes for stereotypes. However, a profile does not typically define instances of elements, such as Objects, nor does it define composite structures, such as Components. The intent of a profile is to adapt existing metamodel elements through the use of stereotypes, tag definitions, and constraints rather than to create instances or define system architectures. This definition and use of a profile are aligned with the guidelines in the UML 2.x Superstructure Specification, which outlines what elements a profile can define within the UML framework.



Choose the correct answer :
Consider the following diagram:



What does the string {guarded} mean?

  1. The execution of op1 is guarded by one or more exceptions which it will handle if they arise.
  2. Multiple invocations of op1 that overlap in time may occur to one instance, but only the first one will get handled.
  3. Multiple invocations of op1 that overlap in time may occur to one instance, but only one is allowed to commence.
  4. The execution of op1 Is guarded by one or more exceptions. Behaviors invoking it are required to handle these exceptions

Answer(s): C

Explanation:

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.






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