OMG-OCUP2-FOUND100 Exam Dumps : OMG Certified UML Professional 2 (OCUP 2) - Foundation Level

In UML, a behavioral feature is a feature of a classifier that specifies an aspect of the behavior of its instances. A behavioral feature is implemented (realized) by a method. Operations are a kind of behavioral feature; they are the specifications of transformations or queries that can be requested from an object of the classifier.

Here's why the other options are not correct:

A) "Method" is not a behavioral feature; it is a realization of one. B) "Function" is more of a programming concept than a UML term and would likely be modeled as an operation if it's part of a classifier. D) "Constraint" is not a behavioral feature but a restriction on some aspect of a classifier or a stereotype. E) "Method Invocation" is not a feature; it's an action that invokes a method. F) "Classifier behavior" is a broader concept that defines the behavior characteristic of classifiers as a whole, not a behavioral feature in itself.

Therefore, the correct answer is:

C. Operation

The provided image depicts a state machine fragment containing an invalid transition. The state machine has a single state labeled "S1" with an incoming and outgoing transition labeled "e".

According to the UML 2 Foundation documents, a transition in a state machine cannot originate from and target the same state. This type of loopback transition within a single state is not permitted.

Here's a breakdown of why other options are incorrect:

• Option A (A transition requires a trigger or guard) is not necessarily true. Transitions can exist without explicit triggers or guards, although their presence is often recommended for clarity and modeling complex behavior.
• Option B (A guard condition is not allowed on the initial transition) is valid. Guard conditions are indeed not allowed on the initial transition of a state machine, but the issue in the diagram is the loopback, not the presence or absence of a guard.
• Option C (A trigger is not allowed on the transition to the final state) is not always true. Final states can have outgoing transitions with triggers under specific circumstances (e.g., for hierarchical state machines). However, the error here concerns the loopback nature of the transition.

References:

• UML Specification (Superstructure) Version 2.5.1, specifically sections covering state transitions (Section 14.2.3.7). You can find it on the OMG website: https://www.omg.org/spec/UML/2.5.1

In UML, when a class diagram shows an operation with a parameter that has a multiplicity of [0..1], it indicates that the parameter is optional. The range [0..1] means that the parameter can have 0 or 1 occurrence. This does not mean it accepts a collection, nor does it specify the values it accepts (it specifies how many times the parameter can occur).

The correct interpretation of the parameterpar1 : Integer [0..1]is:

A. It is optional.

B is incorrect because the multiplicity [0..1] does not mean a collection of items; rather, it signifies that the parameter can be omitted or present, but not multiple times. C is incorrect because the multiplicity [0..1] does not constrain the values to 0 or 1; it refers to the number of instances of the parameter. D is incorrect because [0..1] is not a range of values but a range of occurrences or instances of the parameter.

Therefore, the correct answer is:

A. It is optional.