Which of these are true with respect to the message arrows?
A)the synchronous message arrow is used when a sending individual continues execution after sending the message
B)the asynchronous message arrow is used when a sending individual suspends execution after sending the message
C)the dashed arrow is used either to show the return of control from a synchronous message or to create a new entity
D)all of the mentioned

Question

Quizplus · Accepted Answer

The dashed arrow in sequence diagrams is indeed used to show the return of control from a synchronous message or to create a new entity. The descriptions of synchronous and asynchronous message arrows in options A and B are reversed; in a synchronous message, the sender waits for the receiver to process the message and possibly return a response before continuing, while in an asynchronous message, the sender continues execution without waiting for a response.

Which of These Are True with Respect to the Message