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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?

A lifeline Signup and view all the answers

How is a message represented in a sequence diagram?

As an arrow between activation boxes Signup and view all the answers

What is a combined fragment in a sequence diagram?

A subsequence of an interaction special in some way Signup and view all the answers

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

It becomes a broad box Signup and view all the answers

How can a message be labeled in a sequence diagram?

With a name, an argument list, and a return value Signup and view all the answers

What is not shown in a sequence diagram?

The object deletion process Signup and view all the answers

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

To show the live activation period of an object Signup and view all the answers