Discuss OMG OMG-OCUP2-FOUND100 Exam Topic 5 Question 17

Choose the correct answer:

How many activities can feed an initial node at the beginning of an activity thread?

B0..*

D1..*

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.

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34 comments · newest first

Gerardo 10 months ago

I’m leaning towards D, 1..* seems more logical.

Jonell 11 months ago

I agree with B, makes sense for flexibility.

Virgina 11 months ago

Wait, is it really B? I thought it had to be at least 1.

Bernardo 11 months ago

Definitely B! Multiple activities can start it.

Emilio 11 months ago

I think it's B, 0..* can feed an initial node.

Sherita 12 months ago

I’m confused about this one. I thought an initial node could only have one activity feeding into it, but now I’m second-guessing myself.

Dorthy 12 months ago

I’m leaning towards option D, but I’m not completely confident. I just remember that an initial node usually has at least one activity.

Dan 12 months ago

I remember practicing a question like this, and I think it was about how many activities can start a process. I feel like it could be 0..*.

Lashaunda 1 year ago

I think the initial node can have multiple activities feeding into it, but I'm not sure if it's 0..* or 1..*.

Miriam 1 year ago

This question is really testing our understanding of the underlying concepts. I'll need to review my notes to make sure I have the right approach.

Magdalene 1 year ago

I've got a good feeling about option B - 0..*. That seems to capture the flexibility of the number of activities that can feed an initial node.

Tiffiny 1 year ago

Okay, let me break this down step-by-step. I need to understand what an "initial node" and "activity thread" mean in this context.

Yolande 1 year ago

I'm not entirely sure about this, but I think the answer might be C - 1. That seems to make the most sense to me.

Louvenia 1 year ago

Hmm, this looks like a tricky one. I'll need to think it through carefully.

Marvel 1 year ago

Okay, let me read through the options again and see if I can spot the incorrect one.

Whitney 2 years ago

The correct answer is clearly D, 1..*. Anything else would be like trying to feed a black hole - good luck with that!

Clarence 2 years ago

I gotta say, this question is making my head spin. Is it just me, or does activity threading sound like a bad pick-up line?

Geraldo 2 years ago

↳ replying to Clarence

C) 1

Carry 2 years ago

↳ replying to Clarence

B) 0..*

Veta 2 years ago

↳ replying to Clarence

A) 0

Aretha 2 years ago

I believe it's D) 1..* because there can be multiple activities feeding an initial node.

Dominic 2 years ago

I agree with Stefany, it's C) 1 because only one activity can feed an initial node.

Buddy 2 years ago

Hmm, I thought it was 0..* for the initial node, but maybe I'm wrong. Let me re-read the question.

Monroe 2 years ago

↳ replying to Buddy

I agree, it's definitely 0..*

Lenna 2 years ago

↳ replying to Buddy

I'm not sure, but I think it's 0..*

Nicholle 2 years ago

↳ replying to Buddy

I believe it's 0..* as well

Edward 2 years ago

↳ replying to Buddy

I think it's 0..*

Pearlie 2 years ago

I think it's B) 0..*

Stefany 2 years ago

C) 1

Rosita 2 years ago

A single activity can feed an initial node? That's news to me! I'm going with D, 1..*.

James 2 years ago

↳ replying to Rosita

D) 1..* seems to be the correct answer.

Theola 2 years ago

↳ replying to Rosita

I'm not sure, but I'll go with D) 1..* as well.

Cordell 2 years ago

↳ replying to Rosita

I agree, D) 1..* sounds right.

Rosendo 2 years ago

↳ replying to Rosita

I think it's D) 1..*

OMG-OCUP2-FOUND100 Exam - Topic 5 Question 17 Discussion