OMG Exam OMG-OCUP2-FOUND100 Topic 5 Question 26 Discussion

Actual exam question for OMG's OMG-OCUP2-FOUND100 exam

Question #: 26
Topic #: 5

[All OMG-OCUP2-FOUND100 Questions]

Choose the correct answer:

How many class instances can be shown on an Object Diagram?

C1..*

D0..*

Show Suggested Answer

Suggested Answer: C

In UML, an initial node is the starting point of an activity thread and represents the start of the flow in an activity diagram.According to the UML 2.5.1 specification, an initial node has no incoming edges and precisely one outgoing edge1. This means that only one activity can feed an initial node at the beginning of an activity thread, which aligns with option C.

The initial node is depicted as a filled circle and is used to show where the control starts within the activity. When the activity is invoked, control tokens are placed on the initial node and can then traverse the outgoing edge to the first action or activity node. The specification clearly states that there should be only one outgoing edge, ensuring that the flow of control is unambiguous at the start of the activity.

For further details and verification, you can refer to the UML 2.5.1 specification, particularly Chapter 15.7, which covers the Activity, ActivityFinalNode, InitialNode, and other related elements2.Additionally, the Object Management Group (OMG) provides resources and guidelines for the UML exams, including the types of questions that may appear and the knowledge areas covered3.

It's important to note that while multiple initial nodes can exist within a single activity diagram, each initial node can only be the source of one outgoing edge, and thus, only one activity can feed each initial node.

by Peggy at Jan 12, 2025, 03:58 PM

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Peggie

1 months ago

I'm going to have to roll the dice on this one. Who knew object diagrams could be so complicated? Maybe I should have taken a class on origami instead.

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Chandra

7 days ago

I'm not sure, but I'll go with D) 0..*

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Sherita

17 days ago

I believe it's C) 1..*

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Claribel

18 days ago

I think the answer is B) 1

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Herman

1 months ago

D for sure! 0.* is the way to go. Otherwise, how would you show an empty object diagram? Maybe the exam writers are trying to trick us with those other options.

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Tamesha

5 days ago

I'm not sure, but I think C might be the correct answer. It could represent one or more class instances on an Object Diagram.

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Hortencia

7 days ago

I think B could also be a valid answer, as you can have at least one class instance shown on an Object Diagram.

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Larae

9 days ago

I agree, D is the correct answer. 0.* allows for an empty object diagram.

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Jacob

2 months ago

I'm gonna go with B. I mean, an Object Diagram is all about a single instance of a class, right? Why would you need more than one?

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Rodolfo

11 days ago

No problem! Happy to help.

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Lyndia

12 days ago

Oh, I see. Thanks for confirming!

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Elsa

13 days ago

Yes, you're correct! The answer is B) 1.

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Bambi

1 months ago

I'm gonna go with B. I mean, an Object Diagram is all about a single instance of a class, right? Why would you need more than one?

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Tamra

2 months ago

Hmm, I'm not sure. I think it might be C since object diagrams are used to show specific instances of classes, and the notation 1..* indicates that there can be one or more instances.

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