OMG-OCUP2-FOUND100 Exam - 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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Horace

7 months ago

Agreed, 1..* is the way to go for flexibility!

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Raul

7 months ago

0..* makes sense too, but I lean towards 1..*.

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Dalene

7 months ago

Wait, can you really show zero instances? That seems odd.

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Leonora

8 months ago

I thought it was just 1, but I guess not.

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Soledad

8 months ago

It's definitely 1..* for multiple instances!

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Carline

8 months ago

I’m a bit confused. I thought it could only show one instance at a time, but now I’m not so sure. Is it really option B?

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Alesia

8 months ago

I feel like I read somewhere that an object diagram can represent zero or more instances, so could it be D?

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Jillian

8 months ago

I remember practicing a question like this, and I think it was about showing the relationship between classes. Maybe it's option C?

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Iesha

9 months ago

I think an object diagram can show multiple instances, but I'm not sure if it's 1..* or 0..*.

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Glory

9 months ago

I'm not too confident on this, but my best guess is that the answer is C. I seem to recall that Object Diagrams can depict 1 or more class instances, but I'll need to verify that.

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Elbert

9 months ago

I'm leaning towards B. I think Object Diagrams can only show a single class instance, but I'm not 100% certain. I'll review my notes to double-check.

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Otis

9 months ago

Easy one! The answer is D. Object Diagrams can show 0 or more class instances, so 0..* is the correct choice.

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Mozell

9 months ago

Hmm, I'm a bit confused on this one. I know Object Diagrams are used to show object instances, but I'm not sure about the exact number that can be shown. I'll have to think this through carefully.

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Ben

9 months ago

I'm pretty sure the answer is C. An Object Diagram can show one or more class instances, so 1..* is the correct answer.

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Peggie

1 year 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

1 year ago

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

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Sherita

1 year ago

I believe it's C) 1..*

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Claribel

1 year ago

I think the answer is B) 1

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Herman

1 year 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

1 year 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

1 year 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

1 year ago

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

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Jacob

1 year 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

1 year ago

No problem! Happy to help.

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Lyndia

1 year ago

Oh, I see. Thanks for confirming!

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Elsa

1 year ago

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

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Bambi

1 year 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

1 year 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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