A.Diagrams are used to communicate parts of the model

B.Models are only graphical

C.A diagram contains all system details

D.Diagrams and models are equivalent

A.Block Definition Diagram

B.Sequence Diagram

C.Package Diagram

D.Activity Diagram

A.A parallel activity

B.An internal state transition

C.The interaction or communication between two lifelines

D.A decision-making point

A.To show the sequence of interactions between system components

B.To capture system-level requirements

C.To model interactions between actors and the system

D.To define the structure of a system by specifying its components and their relationships

A.A message that triggers the system to change states

B.A message that must receive a response before the interaction continues

C.A message that terminates the interaction

D.A message that is sent asynchronously