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OMG Exam OMG-OCUP2-FOUND100 Topic 5 Question 29 Discussion

Actual exam question for OMG's OMG-OCUP2-FOUND100 exam
Question #: 29
Topic #: 5
[All OMG-OCUP2-FOUND100 Questions]

Choose the correct answer:

When is a state machine for an object created and ready to accept events?

Show Suggested Answer Hide 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 Marva at Mar 09, 2025, 07:42 AM

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Alverta
2 months ago
If the state machine isn't ready by the time the last state ends, does that mean it's... state-less? *ba dum tss*
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Sharee
10 days ago
Oh, got it. Thanks for clarifying!
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Renea
18 days ago
Haha, good one! But no, it's actually when the object has finished its initialization.
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Rusty
22 days ago
C) by the time the object has finished its initialization
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Nobuko
1 months ago
A) by the time the last state ends
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Joaquin
2 months ago
A is my pick. The state machine is created and ready to go by the time the last state ends. Simple as that. Although I'm probably overthinking this...
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Mitzie
1 months ago
I'm with A too. It makes sense that the state machine is ready by the time the last state ends.
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Herschel
1 months ago
I think it's C. The state machine is ready to accept events by the time the object has finished its initialization.
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Bettina
2 months ago
I agree, A is the correct answer. The state machine is indeed created by the time the last state ends.
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Hillary
3 months ago
Hmm, I'm leaning towards D. Seems like the state machine should only be ready when the whole system is up and running, ready to receive events. Gotta think about the bigger picture.
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Nikita
1 months ago
I agree with you, D makes more sense. It's important for the state machine to be ready when the whole system is up and running.
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Sharita
2 months ago
I see your point, but I still believe it's D. The state machine should wait until all objects in the system are ready to receive events.
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Melda
2 months ago
I think it's actually C. The state machine should be ready once the object has finished its initialization.
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Hana
3 months ago
I'm gonna go with B. The state machine should be ready as soon as the sequence diagrams start, right? That's when the object's lifecycle begins.
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Eileen
1 months ago
User 4: I'm gonna go with B. The state machine should be ready as soon as the sequence diagrams start, right? That's when the object's lifecycle begins.
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Julieta
1 months ago
User 3: I'm not sure, but I think it's A. The state machine should be ready by the time the last state ends.
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Beckie
2 months ago
User 2: I agree with Beckie, C makes sense. The object needs to be fully initialized before the state machine can accept events.
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Brittney
3 months ago
User 1: I think the correct answer is C. The state machine is created by the time the object has finished its initialization.
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Jeannine
3 months ago
C is the correct answer. The state machine is ready to accept events once the object has finished its initialization. That makes sense to me.
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Daron
2 months ago
Yes, that makes sense. The state machine is ready after the object finishes initialization.
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Deonna
2 months ago
I think C is the correct answer.
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Francine
3 months ago
I'm not sure, but I think it's A) by the time the last state ends.
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Cassandra
3 months ago
I agree with Dacia, because the state machine needs to be fully initialized before it can accept events.
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Dacia
3 months ago
I think the answer is C) by the time the object has finished its initialization.
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