SWD4

What does the system context class diagram define?

• (a) The entity classes in the system

• (b) How the system interfaces to other systems

• (c) The boundary between the system and the external environment

• (d) The context classes in the system

What is an entity class?

• (a) A class on an entity/relationship diagram

• (b) A class that stores data

• (c) A class that interfaces to an external entity

• (d) An external class

What is a boundary object?

• (a) An external object

• (b) An object that stores data

• (c) An object that communicates with an external object

• (d) An object that controls other objects

What is a control object?

• (a) An object that depends on other objects

• (b) An object that communicates with an external object

• (c) An object that controls other objects

• (d) An object that is controlled by other objects

What is a state-dependent control object?

• (a) An object that depends on a state machine

• (b) An object that communicates with a state machine

• (c) An object that controls a state machine

• (d) An object that executes a state machine

What is a coordinator object?

• (a) A manager object

• (b) An object that makes decisions based on a state machine

• (c) A decision-making object

• (d) An object that decides which entity object to interact with

How would you determine a boundary class from the context diagram?

• (a) By looking at it

• (b) By selecting the external classes on the context diagram

• (c) By determining the software classes that communicate with the external classes

• (d) By drawing the boundary between the hardware and software classes

What is a timer object?

• (a) An external clock

• (b) An internal clock

• (c) An object that is awakened by an external timer

• (d) An object that interacts with a clock

What do class structuring criteria help with?

• (a) Structuring an application into classes

• (b) Defining the attributes of a class

• (c) Defining the associations of a class

• (d) Defining the operations of a class

What is the classification process for application classes analogous to?

• (a) Categorizing books in a library

• (b) Deciding how many copies of a book are needed

• (c) Finding the classrooms in a school

• (d) Identifying what labs the school has