Quiz2-SoftDesign-MakScie

In a sequence diagram, a lifeline represents:

• A sequence of operations

• A role or object in the interaction

• A control flow between activities

• A state of an object

The dashed vertical line in a sequence diagram is called:

• Activity flow

• Lifeline

• Execution specification

• Interaction fragment

A synchronous message in a sequence diagram is usually represented by:

• Solid line with open arrowhead

• Solid line with filled arrowhead

• Dashed line with open arrowhead

• Dashed line with filled arrowhead

What does an activation box (execution specification) denote?

• Object destruction

• Time during which an object is active

• Object creation

• Relationship between objects

Which message type shows object destruction?

• Lost message

• Found message

• Delete message

• Return message

Combined fragments in sequence diagrams are used for:

• Representing class relationships

• Representing alternative flows

• Representing object state transitions

• Representing inheritance

The return message in a sequence diagram is usually shown with:

• Solid line with filled arrowhead

• Dashed line with open arrowhead

• Dashed line with filled arrowhead

• Solid line with open arrowhead

Which UML element is NOT used in a sequence diagram?

• Lifeline

• Actor

• State node

• Activation box

Which diagram best complements sequence diagrams for describing system structure?

• Class diagram

• Activity diagram

• State diagram

• Use case diagram

In UML, an asynchronous message is represented by:

• Solid line with open arrowhead

• Solid line with filled arrowhead

• Dashed line with open arrowhead

• Dashed line with filled arrowhead