UML Diagrams Tutorial

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Questions and Answers

What is the main purpose of an interaction diagram?

  • To identify the actors in a system
  • To show the static structure of a system
  • To visualize how a system runs (correct)
  • To model the behavior of a single class

What symbol is used to represent an actor in an interaction diagram?

  • A rectangle with a bold border
  • A stick-person symbol (correct)
  • A box with an underlined name
  • A diamond shape

What is the vertical dimension of a sequence diagram?

  • The number of messages exchanged
  • Time (correct)
  • The complexity of the interaction
  • The number of objects involved

What is attached to each object or actor in a sequence diagram?

<p>A lifeline (C)</p> Signup and view all the answers

How is a message represented in a sequence diagram?

<p>As an arrow between activation boxes (A)</p> Signup and view all the answers

What is a combined fragment in a sequence diagram?

<p>A subsequence of an interaction special in some way (C)</p> Signup and view all the answers

What happens to a lifeline when an object is activated in a sequence diagram?

<p>It becomes a broad box (A)</p> Signup and view all the answers

How can a message be labeled in a sequence diagram?

<p>With a name, an argument list, and a return value (A)</p> Signup and view all the answers

What is not shown in a sequence diagram?

<p>The object deletion process (B)</p> Signup and view all the answers

What is the purpose of an activation box in a sequence diagram?

<p>To show the live activation period of an object (D)</p> Signup and view all the answers

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