OMG Exam OMG-OCUP2-FOUND100 Topic 7 Question 20 Discussion

Represent the movement of data or objects between activities.

Can support multicast, meaning sending a single token to multiple recipients.

Can support transformation, where input tokens are altered or transformed into different output tokens.

Control Flows

Represent the sequence of execution between activities.

Generally carry control tokens to indicate when the next activity can begin.

Explanation for why Answer B is Correct

Multicast and Transformation:Object flows are specifically designed to handle more complex scenarios with multiple inputs, outputs, and the ability to transform data. Control Flows are focused on the order of execution and don't directly support these capabilities.

Analysis of Other Options:

A . Both object flows and control flows can pass...: While both can carry tokens, the specializations of multicast and transformation are unique to object flows.

C . Only control flows provide additional support...: This is incorrect. As mentioned above, these features are associated with object flows, not control flows.

D . Only object flows may reorder...: This is potentially true, but less central to the main difference between object flows and control flows, which is the ability of object flows to support multicast and transformation.

Reference

UML 2.5.1 Specification (Superstructure): Sections on Activity Diagrams, Object Flow, and Control Flowhttps://www.omg.org/spec/UML/2.5.1/