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

Choose the correct answer:

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

C1..*

D0..*

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.

Get Premium OMG-OCUP2-FOUND100 Questions as Interactive Web-Based Practice Test or PDF Real Exam Format Detailed Explanations Instant Access Get Your Practice Test

34 comments · newest first

Horace 10 months ago

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

Raul 11 months ago

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

Dalene 11 months ago

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

Leonora 11 months ago

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

Soledad 11 months ago

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

Carline 12 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?

Alesia 12 months ago

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

Jillian 12 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?

Iesha 1 year ago

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

Glory 1 year 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.

Elbert 1 year 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.

Otis 1 year ago

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

Mozell 1 year 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.

Ben 1 year 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.

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.

Chandra 1 year ago

↳ replying to Peggie

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

Sherita 1 year ago

↳ replying to Peggie

I believe it's C) 1..*

Claribel 1 year ago

↳ replying to Peggie

I think the answer is B) 1

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.

Tamesha 1 year ago

↳ replying to Herman

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.

Hortencia 1 year ago

↳ replying to Herman

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

Larae 1 year ago

↳ replying to Herman

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

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?

Rodolfo 1 year ago

↳ replying to Jacob

No problem! Happy to help.

Lyndia 1 year ago

↳ replying to Jacob

Oh, I see. Thanks for confirming!

Elsa 1 year ago

↳ replying to Jacob

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

Bambi 1 year ago

↳ replying to Jacob

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?

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.

Gerry 1 year ago

↳ replying to Tamra

I agree, C makes sense because it allows for multiple instances to be shown.

Leota 1 year ago

↳ replying to Tamra

I think you're right, C seems like the correct answer.

Ben 1 year ago

I think the answer is D. 0.* seems to be the correct option as an Object Diagram can show any number of class instances, including zero.

Asuncion 2 years ago

I'm not sure, but I think the answer is D) 0..* because it allows for zero or more instances.

Lenna 2 years ago

I disagree, I believe the answer is B) 1 because it shows exactly one instance.

Eileen 2 years ago

I think the answer is C) 1..* because it represents one or more instances.

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