What can an activity diagram be used for in use case modeling?

To depict the activities in the main and alternative sequences of a use case

To depict the sequence of activities executed by all the use cases in the system

To depict the sequence of external activities that the use case interacts with

To depict the sequence of active objects in a use case

How can a nonfunctional requirement be described in a use case model?

In a separate section of the use case description

What is a use case package?

A package describing the actors in the system

A package describing the use cases in the system

The package of objects that participate in the use case

A collection of objects with the same characteristics

A client or server in the system

What is an attribute?

A data value held by an object in a class

A relationship between two classes

A parameter of an operation or method

The return value from an operation

What is an association?

A relationship between two classes

A relationship between two objects

What is meant by the multiplicity of an association?

How many instances of one class relate to a single instance of another class.

The number of associations in a class

The number of associations between two classes

How many instances of one class relate to how many instances of another class

What is an association class?

A class that models an association between two or more classes

A class with multiple associations

A class that models an association between two or more objects

What is a generalization/specialization hierarchy?

An association between a generalized class and a specialized class

What is a composition hierarchy?

A strong form of a whole/part relationship

A weak form of a generalization/ specialization hierarchy

A strong form of a generalization/ specialization hierarchy

A weak form of a whole/part relationship

What is an aggregation hierarchy?

A weak form of a whole/part relationship

A weak form of a generalization/specialization hierarchy

A strong form of a generalization/specialization hierarchy

A strong form of a whole/part relationship

What does the system context class diagram define?

The boundary between the system and the external environment

The entity classes in the system

How the system interfaces to other systems

The context classes in the system

What is an entity class?

A class on an entity/relationship diagram

A class that interfaces to an external entity

What is a boundary object?

An object that communicates with an external object

An object that controls other objects

What is a control object?

An object that controls other objects

An object that depends on other objects

An object that communicates with an external object

An object that is controlled by other objects

What is a state-dependent control object?

An object that executes a state machine

An object that depends on a state machine

An object that communicates with a state machine

An object that controls a state machine

What is a coordinator object?

An object that makes decisions based on a state machine

An object that decides which entity object to interact with

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

By determining the software classes that communicate with the external classes

By selecting the external classes on the context diagram

By drawing the boundary between the hardware and software classes

What is a timer object?

An object that is awakened by an external timer

An object that interacts with a clock

What do class structuring criteria help with?

Structuring an application into classes

Defining the attributes of a class

Defining the associations of a class

Defining the operations of a class

What is the classification process for application classes analogous to?

Categorizing books in a library

Deciding how many copies of a book are needed

Finding the classrooms in a school

Identifying what labs the school has

What is the purpose of a stereotype in class structuring?

To label a class according to its class structuring criterion

To identify the objects that belong to the same class

To distinguish between external objects and software objects

To identify the association between two classes

What is a business logic object?

An object that defines business specific application logic

An object used in business applications

The internal logic of an object

A business object that determines whether a client request is logical

What does an interaction diagram depict?

Software objects and the sequence of their interactions

The state and transitions inside a control object

Classes and their relationships

The external objects communicating with the system

How is an actor depicted on an interaction diagram?

An instance of an actor can provide input to or receive output from a boundary object.

An actor has an association with the interaction diagram.

An actor can provide input to or receive output from a boundary object.

An actor can provide input to or receive output from a boundary class.

What does a sequence diagram depict?

Software objects and the sequence of their interactions

The sequence of external objects communicating with each other

Classes and their relationships

The external objects communicating with the system

What does a communication diagram depict?

Software objects and the sequence of their interactions

The sequence of external objects communicating with each other

Classes and their relationships

The external objects communicating with the system

What is the instance form of an interaction diagram?

Depicts one possible sequence of interactions among object instances

Depicts several object instances interacting with each other

Depicts all possible interactions among object instances

Depicts all object instances and their links to each other

What is the generic form of an interaction diagram?

Depicts all possible interactions among objects

Depicts several objects interacting with each other

Depicts one possible sequence of interactions among objects

Depicts all classes and their associations with each other

During dynamic interaction modeling, use cases are realized as follows:

Determine objects that participate in each use case and the sequence of interactions among them.

Determine external objects and the sequence in which they provide inputs to and receive outputs from each use case.

Determine sequence of interactions among use cases.

Determine how a use case is depicted through internal states and transitions between them.

Which of the following interactions could happen on an interaction diagram?

An external user sends a message to a user interaction object.

An external user sends a message to an entity object.

An external user sends a message to an I/O object.

An external user sends a message to a printer object.

Which of the following interactions is NOT likely to happen on an interaction diagram?

An input object sends a message to a printer object.

A user interaction object sends a message to an entity object.

An input object sends a message to a state-dependent control object.

A user interaction object sends a message to a proxy object.

What is a state in a state machine?

A recognizable situation that exists over an interval of time

A condition that is True or False

An input from the external environment

What is an event in a state machine?

A discrete signal that causes a change of state

An input from the external environment

The result of a state transition

What is an action in a state machine?

A computation that executes as a result of a state transition

An occurrence at a point in time

An interval between two successive events

What is an entry action in a state machine?

An action that is performed when the state is entered

An action that is performed when the state is left

An action that starts executing when the state is entered and completes executing when the state is left

An action that executes as a result of a state transition

What is an exit action in a state machine?

An action that is performed when the state is left

An action that is performed when the state is entered

An action that starts executing when the state is entered and completes executing when the state is left

An action that executes as a result of a state transition

What is a state transition into a composite state equivalent to?

A transition into only one of the substates

A transition into each of the substates

A transition into none of the substates

A transition into any one of the substates

What is a state transition out of a composite state equivalent to?

A transition out of each of the substates

A transition out of only one of the substates

A transition out of none of the substates

A transition out of any one of the substates

How does a composite state relate to a substate?

A composite state is decomposed into substates.

Composite states are composed into substates.

A composite state transitions to a substate.

A substate transitions to a composite state.

If two actions are shown on a given state transition, which of the following is true?

The two actions are independent of each other.

The two actions are dependent on each other.

One action provides an input to the other action.

The second action executes when the first action completes execution.

What does a state-dependent interaction involve?

A state-dependent control object

A state-dependent entity object

A state-dependent user interaction object

SWD392 Part II: Software Modeling

Authored by Công Thành Nguyễn

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a use case?

A case study involving users

A sequence of interactions between the user and the system

A sequence of interactions between the user and the objects in the system

A sequence of user inputs to the system

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is an actor in a use case?

An object inside the system

A person who performs on stage

An external entity that interacts with the system

The customer to whom the system will be delivered

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a primary actor?

The actor who goes on stage first

The actor that starts the use case

An actor that participates in the use case

An object inside the system

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a secondary actor?

The actor who goes on stage second

The actor that starts the use case

An actor that participates in the use case

An object inside the system

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is an alternative sequence in a use case?

A sequence that describes an error case

A sequence that is different from the main sequence

A sequence that describes interactions with a secondary actor

A sequence that describes interactions with a primary actor

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What can an inclusion use case be used for?

To describe an inclusive use case

To describe a lengthy interaction with an actor

To describe functionality that is common to more than one use case

To describe a use case that includes other use cases

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What can an extension use case be used for?

To describe a lengthy interaction with an actor

To describe functionality that is common to more than one use case

To describe the functionality of a use case that is extended by another use case(s)

To describe a conditional part of a different use case that is only executed under certain circumstances

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