Deck 6: Behavioral Modeling

Question 1

When an object sends a message to itself in a sequence diagram, that is referred to as _____.

A) recursive-messaging
B) self-messaging
C) self-delegation
D) recursive-delegation
E) none of the above

Answer 1

C

Question 2

A systems analyst draws a lifeline with an X at the end. This lifeline represents _____.

A) a message that cannot be delivered
B) an object that is destroyed at a point in time
C) a message that is delivered at that point in time
D) an object that is complete at that point in time
E) an object that arrives at its final destination

Answer 2

B

Question 3

A(n) _____ describes information about an object.

A) attribute
B) behavior
C) operation
D) message
E) instance

Answer 3

A

Question 4

_____ are information that is sent to objects to tell it to execute one of its behaviors.

A) attributes
B) operations
C) messages
D) instances
E) use-cases

Question 5

Which of the following objects would be most likely to be destroyed at some point in time in a sequence diagram?

A) customer
B) order
C) order item
D) invoice
E) shopping cart

Question 6

When arranging actors and objects on a sequence diagram, it is nice to list them _____.

A) in alphabetical order down the side of the diagram
B) in alphabetical order across the top of the diagram
C) in order in which they participate in the sequence down the side of the diagram
D) in order in which they participate in the sequence across the top of the diagram
E) actors and objects are not both shown on a sequence diagram

Question 7

In a communication diagram, a(n) _____ between actors and objects is shown with an undirected line.

A) procedure calls
B) data flow
C) association
D) message
E) relationship

Question 8

A set of rules are used for performing the verification and validation walkthrough of behavioral model. One of the rules is: if there is a message on the sequence diagram, there must be _________________on the communications diagram, and vice versa.

A) a communication
B) a message
C) a behavior
D) a dependence
E) an association

Question 9

On a sequence diagram, an object name of Students:List would indicate that _____.

A) Students is an instance of the List class that contains individual student objects
B) List is an instance of the Students class
C) List is a method of the Students class
D) the Students and Lists objects are combined for that step in the sequence diagram
E) a message is being passed from the Students class to the List class

Question 10

The two types of interaction diagrams are ______________ diagrams.

A) use-case and sequence
B) class and sequence
C) sequence and communication
D) object and communication
E) statechart and object

Question 11

The modeling focus of the interaction diagram is at the _____ level while the modeling focus on the class diagram is at the _____ level.

A) class, object
B) interaction, class
C) class, interaction
D) object, class
E) high, low

Question 12

The acronym CRUD stands for _____.

A) create, read, update, delete
B) create, reference, underline, delete
C) create, re-do, underline, delete
D) collaborate, read, update, delete
E) collaborate, reference, update, discard

Question 13

The order of messages on a sequence diagram goes from ____ to _____.

A) right to left
B) bottom to top
C) left to right
D) top to bottom
E) left to right, top to bottom

Question 14

The focus in a sequence diagram is on __________________

A) How actors interact with objects to realize a given use case
B) Messages sent by actors to other objects
C) when an object is being created
D) when messages are being destroyed
E) time ordering of messages being passed between objects

Question 15

The first step in building a sequence diagram is to _____.

A) set the context
B) identify which objects will participate
C) set the lifeline for each object
D) add the focus of control to each object's lifeline
E) validate the sequence diagram

Question 16

A(n) _____ is an instantiation of a class.

A) attribute
B) behavior
C) operation
D) message
E) object

Question 17

An analyst depicts the static view of an information system with _____.

A) use-case models
B) structural models
C) behavioral models
D) interaction diagrams
E) statechart diagrams

Question 18

A behavioral state machine is a dynamic model that shows the different state through which a single _____ passes through its life in response to events, along with its responses and actions

A) object
B) actor
C) use case
D) sequence diagram
E) communication diagram

Question 19

The external behavior of a system is described by _____.

A) functional models
B) structural models
C) behavioral models
D) interaction diagrams
E) statechart diagrams

Question 20

Analysts use _____ to show the objects that participate in a use case and the messages that pass between the objects over time for one particular use case.

A) structural models
B) sequence diagrams
C) collaboration diagram
D) class diagrams
E) behavioral state machines

Question 21

A message with the information [aStudent exists] will be sent only when this condition is true.

Question 22

A sequence diagram can only be drawn to represent a single scenario in a use case.

Question 23

Both the communication diagram and the sequence diagram can show return messages.

Question 24

It is possible for an object to create another object, resulting in the message going directly to the object, not its lifeline.

Question 25

The first step in drawing a communication diagram is to identify which objects and associations between the objects participate in the communication.

Question 26

A set of rules are used for performing the verification and validation walkthrough of behavioral model. One of the rules is: all _______________ contained in a behavior state machine must be associated with a message being sent on a sequence and communication diagram, and it must be classified as a (C)reate, (U)pdate, or (D)elete message in a CRUDE matrix.

A) messages
B) behaviors
C) transitions
D) associations
E) dependences

Question 27

The behavioral state diagram shows the different states that an object passes through in response to events, together with its responses and actions.

Question 28

In a CRUD matrix, C represents Create.

Question 29

CRUD matrices are created by creating a matrix that lists the classes across the top and down the side.

Question 30

When an object sends a message to itself, it is called self-messaging.

Question 31

Each object can both send and receive messages.

Question 32

When creating a CRUD matrix, you should use the letter U to represent Underline.

Question 33

Conditions on conditional messages in communication diagrams are placed in [ ] symbols.

Question 34

Modeling the real world in behavioral models is relatively easy.

Question 35

The destruction of temporary objects is shown on sequence diagrams with an X at the end of the lifeline.

Question 36

If you are interested in the time ordering of the messages in a system, you should use a communication diagram.

Question 37

The initial state in a behavioral state diagram represents the point at which the object begins to exist.

Question 38

A set of rules are used for performing the verification and validation walkthrough of behavioral model. One of the rules is: all entries in a CRUDE matrix imply _____________ being sent from an actor or object to another actor or object

A) a message
B) a transition
C) an association
D) a guard condition
E) a behavior

Question 39

Actors and objects are placed on a sequence diagram in no particular order.

Question 40

As behavioral models are developed, it is likely that the use cases and structural models will have to be modified.

Question 41

On a behavioral state diagram, an arrow is used to represent a transition.

Question 42

The following symbol represents the destruction of a temporary object in a sequence diagram.

Question 43

CRUD matrices are useful in the step "Set the Context" of building a collaboration diagram?

Question 44

An execution occurrence in a sequence diagram denotes when an object is sending or receiving messages.

Question 45

Identification of the initial, final and states of the object is the final steps of building a behavioral state diagram.

Question 46

In a behavioral state diagram, an action is non-atomic in nature while an activity is atomic and cannot be interrupted.

Question 47

Return messages in a sequence diagram are often shown using dashed lines with arrows labeled with the return value.

Question 48

An execution occurrence in a sequence diagram is represented using thick dashed lines with arrows that are placed on top of the life lines.

Question 49

A final state in a behavioral state diagram is shown using a small filled circle.

Question 50

An action is an atomic, non-decomposable process that cannot be interrupted.

Question 51

The communication diagram is used for modeling process flow.

Question 52

In a behavioral state diagram, an event changes a value(s) that describes an object which in turn changes the object's state.

Question 53

A guard condition is a Boolean expression, which allows a transition to occur only if a condition is satisfied.

Question 54

A rectangle with rounded corners is used to represent an initial state on a behavioral state diagram.

Question 55

An activity in a behavioral state diagram represents the movement of an object from one state to another.

Question 56

One of the guidelines for creating sequence diagram is: Place the initiator of the scenario on the right of diagram.

Question 57

If a class represents only temporary objects, then there should be a D in the column of the CRUD matrix.

Question 58

Adding messages is the last step in building a communication diagram?

Question 59

For sequence, communication and behavioral state diagrams, a frame indicates the context of the diagram

Question 60

Events are the triggers that cause an object to move from one state to another.

Question 61

Explain the syntax for drawing behavioral state diagrams.

Question 62

Explain the term transition.

Question 63

What does the acronym CRUD stand for? Why would an analyst create a CRUD matrix during his analysis?

Question 64

How does a communication diagram differ from a sequence diagram? Why would an analyst choose to draw a communication diagram?

Question 65

Explain the terms event, action and activity.

Question 66

Identify the steps that an analyst would follow in building a communication diagram.

Question 67

Describe behavioral state machines.

Question 68

Only create behavioral state machine for "complex" objects.

Question 69

What is a sequence diagram used for? Why would an analyst choose a sequence diagram over a communication diagram?

Question 70

Think of an employee object. What are several of the possible states that that object may have over time? Which of these states would be the initial state? Which would be the final state?

Question 71

If there is a message on the sequence diagram, there must be an association on the communications diagram, and vice versa.

Question 72

Using detail and descriptive names for states when creating behavioral state machine.

Question 73

Describe communication diagrams.

Question 74

Every actor and object included on a sequence diagram must be included as an actor and an object on a communication diagram, and vice versa.

Question 75

When drawing a sequence diagram, the analyst uses lifelines and a symbol to represent the execution occurrence. It is also possible for an object to be destroyed at some point in time. Explain these three concepts - what is a lifeline, what does the execution occurrence mean, and how it is possible that an object can be destroyed in a use case. Show the diagramming symbols used to represent each of these concepts.

Question 76

Describe sequence diagrams.

Question 77

List and describe the steps an analyst would follow in building a behavioral state diagram.

Question 78

Some entries in a CRUDE matrix does not imply a message being sent from an actor or object to another actor or object.

Question 79

List the steps that an analyst should go through to build a sequence diagram.

Question 80

When looking at a CRUD matrix, why would it be important to see "D" in a column for a temporary object, or to not see "D" or "U" in a column for objects in a data warehouse?