OMG OMG Certifications OMG-OCUP-100 Questions & Answers

• Question 121:

  What is true concerning the UML model depicted in the exhibit?

  

  A. M is not a behavior of C since p and q are not defined within C.

  B. If M is a behavior in C, then a in C is the property represented by lifeline a in M.

  C. a and b are lifelines within C, as well as being the same entities as those referenced in M.

  D. The communication diagram on the left forms the base for the sequence diagram on the right.

  Correct Answer: B

• Question 122:

  Which kinds of diagram can be used to define an interaction in UML 2.0? (Choose three)

  A. class diagram

  B. sequence diagram

  C. state machine diagram

  D. communication diagram

  E. composite structure diagram

  F. interaction overview diagram

  Correct Answer: BDF

• Question 123:

  What is true about lifelines?

  A. represent a sequence of operation calls

  B. represent an individual participant in the interaction

  C. has traces of events following the sequence of messages

  D. in a sequence diagram, are horizontal or with a slight downward slope

  Correct Answer: B

• Question 124:

  What about event order is true for simple interactions? (Choose two)

  A. Events are ordered from top to bottom in a sequence diagram.

  B. Events are ordered from top to bottom of a lifeline in a simple sequence diagram.

  C. When messages represent operation calls, their sending and receiving events coincide in time.

  D. The send event of a complete message comes before the receive event of the same message.

  E. The start event of an execution occurrence will coincide in time with the event representing the call of that operation.

  Correct Answer: BD

• Question 125:

  In the exhibit, where is the execution occurrence in the sequence diagram named R?

  

  A. lifeline a

  B. lifeline b

  C. message denoted by r

  D. lifeline b in thin vertical rectangle

  E. message with identifier v (dashed line)

  F. at the arrowhead of the dashed message on lifeline a

  Correct Answer: D

• Question 126:

  There is an element identified as r in the exhibit. What does this element describe in a UML 2.0 interaction diagram?

  

  A. timing signal from b

  B. found message, found by b

  C. lost message originating from b

  D. synchronous message to the environment of R

  E. asynchronous message to the environment of R

  Correct Answer: E

• Question 127:

  Let us denote sending of p as !p and receiving p as ?p. he exhibit, what is correct about event occurrences of the interaction Q?

  

  A. !p will precede !q

  B. ?p will precede !r

  C. ?q may precede ?r

  D. !r will precede !q

  Correct Answer: A

• Question 128:

  What is a selector of a lifeline?

  A. a scheduler that chooses the next lifeline on which to run

  B. a specific lifeline that selects a resource from a resource pool

  C. a construct to select one lifeline out of all the lifelines in the diagram

  D. an expression selecting one out of a set; a general indexing mechanism

  Correct Answer: D

• Question 129:

  Which keyword denotes a lifeline that represents the object owning the lifeline?

  A. own

  B. self

  C. this

  D. object

  E. ncloser?

  Correct Answer: B

• Question 130:

  Which arrowhead shows that the message represents an operation call, rather than a signal, in UML 2.0?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: A