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

In UML sequence diagrams, a signal is typically represented as an asynchronous message without a return value. Asynchronous messages are often denoted with an open arrowhead, and they can represent the sending of a signal.

Looking at the diagram provided, 'p' is sent from 'v2[C]' to 'v3[B]' with an open arrowhead, which indicates that it is an asynchronous message. This fits the common representation of a signal, as it does not expect a response.

'A', 'B', and 'C' do not represent signals in the context of a sequence diagram: A) 'v' is not shown in the diagram; it might refer to a lifeline, which is not a signal. B) 'B' refers to a class or object type and not a message or signal. C) 'm' is represented as a synchronous message (as it has a return arrow), which is not typical for signals.

Therefore, the correct answer is:

D. p

In UML, when you need to reference an element from another package while inside a different package, you use the qualified name. A qualified name includes the package name followed by two colons and then the element name. This ensures that the reference is clear and unambiguous, especially when different packages may have elements with the same name.

The correct syntax for referring to elementOneof PackageP1from inside PackageP2isP1::One, where::is the scope resolution operator used to separate the package name from the element name.

Therefore, the correct answer is:

D. P1::One

The correct answer is Option C based on the UML 2 Foundation concepts for activities and pre/postconditions.

Analysis of the Diagram in Option C:

• The diagram depicts an activity named "Withdraw Money".
• There are two diamonds preceding the activity, representing preconditions. Preconditions are conditions that must be true before the activity can be executed.
• The text within the first diamond indicates that "the amount of money to withdraw is entered".
• The text within the second diamond indicates that "the account has sufficient funds".
• This aligns with the scenario where the user must enter a withdrawal amount and the account must have enough money to cover the withdrawal before the "Withdraw Money" activity can proceed.
• Following the activity, there's a diamond labeled "postcondition," indicating a condition that becomes true after the activity is completed.
• The text within the postcondition diamond states that "the account balance is updated." This reflects the scenario where the account balance is updated after a successful withdrawal.

Comparison with Other Options:

• Option A, B, and D do not explicitly show preconditions and postconditions using the diamond notation, making them less suited to represent the scenario where certain conditions need to be met before and after the action.

References

• UML 2.5.1 Specification (Superstructure): Sections on Activity Diagrams and Pre/Postconditions https://www.omg.org/spec/UML/2.4/Superstructure/PDF