OOAD Chapter 5: Activity Diagram

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Questions and Answers

What is represented by a rectangular box in an object node?

A control token
An activity edge
A noun and its state (correct)
A verb phrase

What is the direction of the flow of control and objects in an activity diagram?

Across the page and from top to bottom
Up the page and from right to left
Diagonally across the page
Down the page and from left to right (correct)

What is the primary difference between a control token and a data token?

Control tokens are used for activity edges, while data tokens are used for object nodes
Control tokens do not contain data, while data tokens do (correct)
Control tokens are used for control flow, while data tokens are used for data flow
Control tokens are used for object nodes, while data tokens are used for activity edges

What should be used to name activities and actions in an activity diagram?

Verb phrases (D) Signup and view all the answers

When should an activity diagram be used?

When making a dynamic model of any process (B) Signup and view all the answers

What is the purpose of using [else] guard in an activity diagram?

To indicate every branch (B) Signup and view all the answers

What is the term for an activity edge that is a channel for control tokens?

Control flow (C) Signup and view all the answers

Who are the authors of the book 'The Unified Modeling Language User Guide'?

Booch, Rumbaugh, and Jacobson (C) Signup and view all the answers

What is the term for an activity edge that is a channel for data tokens?

Data flow (D) Signup and view all the answers

What is the rule for token flow through nodes in an activity diagram?

The same rules apply to control and data tokens, except that data is extracted from consumed tokens and added to produced tokens (A) Signup and view all the answers