Chapter 8 State Machine Diagrams - OMG SysML Distilled Questions And Answers Already Graded A+

Classifier behavior - The behavior that begins executing the moment a block is instantiated and generally finishes executing when that instance is destroyed. What is a drawback of a state machine diagram? - It is limited to describing the behavior of blocks that actually have defined states. Not all blocks have such defined states. stateMachine - The only allowable model element type for a state machine diagram. Named elements contained in state machines - Vertices and Transitions What is the notation for a simple state? - A round-cornered rectangle, colloquially referred to as a round-angle. What are the three internal behaviors that a state can perform? - Entry, exit, and do. T/F A simple state must display all of its internal behaviors and internal transitions in a diagram. - False. This is optional. T/F The behaviors displayed in a state must always be performed. - False. They are optional or have a chance of not occurring. Opaque Expressions - Language-specific statements of behavior Opague expressions can specify these three kind of behaviors existing in the model - An Activity, An Interaction, or Another State Machine Entry behavior - the first behavior executed upon entering that state.T/F Entry Behavior are atomic, meaning they must finish executing before the state machine can process a new event occurrence. - True Exit behavior - The last behavior executed before leaving that state, which happens when an event occurrence causes the state machine to transition to a new state. T/F Exit Behaviors are also atomic. - True T/F A state machine may rest in a given state for some nondeterministic period before transition to a new state. - True