OMG-OCUP2-ADV300 Exam - Topic 10 Question 14 Discussion

Actual exam question for OMG's OMG-OCUP2-ADV300 exam

Question #: 14
Topic #: 10

Choose the correct answer:

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.

Show Suggested Answer

Suggested Answer: D

In UML, modeling individual things (such as instances) involves making statements about them. Here are the details for each option:

A . A UML Model can contain individual things (e.g. Instances) UML does not prescribe the level of detail to be used in the description.

This statement is partially correct. UML models can indeed contain individual things (instances), but the level of detail is not explicitly prescribed by UML. However, the statement does not cover the possibility of incomplete or imprecise information.

B . A UML Model can contain statements about individual things If a thing is an instance of a Classifier, these statements must be consistent (all mandatory Properties must be defined, all Constraints must be satisfied).

While it is true that a UML model can contain statements about individual things (instances), the requirement for consistency (mandatory properties and constraints) is not explicitly mentioned in UML. Therefore, this option is not entirely accurate.

C . A UML Model can contain statements about individual things These statements can be incomplete, imprecise, and abstract, but not wrong.

This statement is also partially correct. UML allows for incomplete, imprecise, and abstract statements about individual things. However, it does not guarantee that these statements cannot be wrong.

D . A UML Model can contain statements about individual things. These statements can be incomplete, imprecise, abstract, may turn out to be wrong, or even be asserted as counterfactual.

This option provides a more accurate representation. UML allows for statements about individual things that can be incomplete, imprecise, abstract, and even potentially incorrect. It acknowledges the uncertainty and variability in modeling individual things.

E . A UML Model can only contain statements about sets of individual things (e.g. Classifiers).

This statement is incorrect. UML models can contain statements about both individual things (instances) and sets of things (classifiers).

UML 2.5.1 Specification

While the UML specification does not explicitly state the options, it provides the foundation for UML modeling principles and allows for flexibility in expressing statements about individual things.

Remember that UML is a modeling language, and its primary purpose is to capture and communicate information about systems and their components. The level of detail, precision, and correctness can vary based on the modeling context and the specific use case. Therefore, option D best reflects the UML approach to modeling individual things.

Please note that the information provided here is based on UML 2.5.1, and it's essential to consult the official UML specification for the most accurate and up-to-date details.

by Susy at Jul 17, 2024, 11:17 PM

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Colby

3 months ago

Wait, can we really use Enumeration for propulsion types?

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Jacquelyne

3 months ago

D feels too complicated for what we need.

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Jospeh

3 months ago

C looks interesting, but is it really limiting enough?

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Rolande

4 months ago

I disagree, A is more straightforward.

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Mammie

4 months ago

B seems like the best choice for modularity!

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Vallie

4 months ago

Option D seems like it could work, but I recall that packaging might complicate things more than necessary. I’m not sure if it’s the most efficient tactic.

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Scot

4 months ago

I’m leaning towards option C because it mentions using an enumeration, which seems like a good way to limit choices. Still, I’m not sure if it fully captures the modular aspect.

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Sheron

4 months ago

I remember practicing a question similar to this, and I think option A might be the right approach since it involves specialization, but I’m not confident about the specifics.

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Virgilio

5 months ago

I think option B sounds familiar since it talks about using a template classifier, which we covered in class. But I'm not entirely sure if it's the best choice here.

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Daron

5 months ago

I'm not sure about the Template Classifier approach in Option B. That seems a bit complex for this type of question. I think I'll go with Option A and create specialized Vehicle subclasses.

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Jenise

5 months ago

I'm leaning towards Option C with the Enumeration Class. That seems like a straightforward way to provide a predefined set of propulsion system options.

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Dana

5 months ago

Okay, I think I've got it. The key is to find a way to limit the types of propulsion systems that can be used with the Vehicle class. Option B with the Template Classifier seems like the most appropriate approach.

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Vallie

5 months ago

Hmm, I'm a bit confused by the wording of the question. I'll need to re-read it a few times to make sure I understand the requirements and constraints.

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Nadine

5 months ago

This looks like a tricky UML modeling question. I'll need to think through the UML syntax and semantics carefully to determine the best approach.

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Aleta

5 months ago

Hmm, I'm a bit unsure about this one. Memcached can be tricky, and I don't want to make any assumptions. I'll carefully read through the options and try to apply my understanding of how Memcached works.

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Malcom

5 months ago

I remember a practice question about the FATF list, and it might relate to why a country gets flagged, but I can't recall the specifics on how that leads to any direct actions from the U.S.

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Hillary

9 months ago

I'm just glad we're not designing a vehicle that runs on unicorn tears. That would be a real headache!

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Felix

9 months ago

Shouldn't we just model every possible vehicle combination? That way, we can cover all the bases. Oh wait, that would be way too much work. Option B it is!

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