ECE 5010 Sequence Diagrams

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Questions and Answers

What type of diagrams are commonly used to illustrate the structure of a system in UML?

  • State machine and activity diagrams
  • Activity and state machine diagrams
  • Use case and sequence diagrams
  • Class and sequence diagrams (correct)

In UML, which diagrams are typically used to represent the interaction between different parts of a system?

  • Use case and class diagrams
  • State machine and activity diagrams
  • Sequence and communication diagrams (correct)
  • Sequence and state machine diagrams

Which type of diagram in UML is used to model the behavior of a system based on the changes in its states?

  • Sequence diagram
  • Class diagram
  • Activity diagram (correct)
  • Communication diagram

What UML diagram is commonly used to represent the flow of control from one activity to another within a system?

<p>Activity diagram (C)</p> Signup and view all the answers

Which type of UML diagram is utilized to model the behavior of discrete entities by specifying different states and transitions?

<p>State machine diagram (A)</p> Signup and view all the answers

What is UML primarily used for according to the text?

<p>Describing software systems (C)</p> Signup and view all the answers

Which term best describes UML based on the text?

<p>Semi-formal (D)</p> Signup and view all the answers

What are the parts of a class in UML according to the text?

<p>Name, attributes, operations, and destructors (B)</p> Signup and view all the answers

In C#, what is the UML terminology that corresponds to a class?

<p>Class (B)</p> Signup and view all the answers

What aspect of UML is highlighted by the statement 'Create diagrams only for important classes and interactions'?

<p>Structure modeling (C)</p> Signup and view all the answers

Which way of using UML involves creating interfaces for all subsystems specified but not implementation?

<p>UML as blueprint (D)</p> Signup and view all the answers

Which type of fragment is used to model alternative sequences in a sequence diagram?

<p>Alt fragment (A)</p> Signup and view all the answers

What does the head of a lifeline in a sequence diagram represent?

<p>Sender of a message (D)</p> Signup and view all the answers

In a sequence diagram, what does a continuous bar execution specification represent?

<p>Synchronous message (D)</p> Signup and view all the answers

What notation is used to depict object destruction in a sequence diagram?

<p>Large cross (×) (B)</p> Signup and view all the answers

Which type of message in a sequence diagram indicates that the sender waits for a response before continuing?

<p>Synchronous message (C)</p> Signup and view all the answers

In UML sequence diagrams, what do lifelines represent?

<p>Interaction partners (A)</p> Signup and view all the answers

What is the purpose of alt fragments in a sequence diagram?

<p>To model alternative sequences (A)</p> Signup and view all the answers

What does an opt fragment represent in a sequence diagram?

<p>A conditional optional interaction (C)</p> Signup and view all the answers

What is the purpose of loop fragments in a sequence diagram?

<p>To depict repeated interactions (D)</p> Signup and view all the answers

What does the body of a lifeline represent in a sequence diagram?

<p>Lifetime of the object (B)</p> Signup and view all the answers

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