OMG OMG Certifications OMG-OCUP-200 Questions & Answers

• Question 101:

  For what does an interaction operator define semantics?

  A. a particular message

  B. a particular interaction

  C. a particular combined fragment

  D. a particular interaction fragment

  Correct Answer: C

• Question 102:

  What is a combined fragment?

  A. the combination of decomposed lifelines

  B. an interaction occurrence covering more than one lifeline

  C. a construct with interaction operands and an interaction operator

  D. more than one interaction combined in an interaction overview diagram

  Correct Answer: C

• Question 103:

  In the exhibit, what represents an interaction occurrence?

  

  A. a

  B. b

  C. c

  D. d

  Correct Answer: C

• Question 104:

  What is true about guards on interaction operands?

  A. must always cover all lifelines covered by the operand

  B. should not refer to any dynamic variables, i.e., to attributes of the lifelines

  C. must cover the same lifelines on all interaction operands within one combined fragment

  D. must only cover one lifeline, namely the one lifeline having the first event occurrence of the interaction operand

  Correct Answer: D

• Question 105:

  Where is an interaction constraint placed?

  A. always at the top of an interaction

  B. directly outside the combined fragment

  C. above the first event within an interaction operand

  D. either on the top of an operand or at the bottom of an operand

  Correct Answer: C

• Question 106:

  What is the notation for gates?

  A. circular disc at the interaction frame

  B. point on the fragment frame with an optional name

  C. small arrow either into or out from the fragment frame

  D. small rectangle on the fragment frame with associated name

  Correct Answer: B

• Question 107:

  In the exhibit, what are the valid traces for Cont1?

  

  A. either two p messages or two q messages

  B. either p followed by q or q followed by p

  C. only a p message followed by a q message

  D. any combination of two p messages and two q messages

  Correct Answer: B

• Question 108:

  Assume !p denotes sending of p, ?p the reception of p. In the exhibit, what traces are valid? (Choose three)

  

  A.

  B.

  C.

  D.

  E.

  F.

  Correct Answer: ABE

• Question 109:

  What does it mean when message m is ignored in a combined fragment?

  A. If m happens, the system should abort.

  B. Nothing happens within the fragment until m appears.

  C. Message m appears only in illegal traces of the fragment.

  D. One or more m messages may appear at any point within the fragment.

  Correct Answer: D

• Question 110:

  In the exhibit, what is true about Mstrict?

  

  A. The whole Mstrict has only one legal trace.

  B. Sending r precedes sending p in all legal traces.

  C. Sending q precedes reception of r in all legal traces.

  D. Within the strict combined fragment, sending a signal will immediately be followed by the reception of that signal.

  Correct Answer: C