Systems Analysis And Design in a Changing World 6th Edition By John W. Satzinger - Test Bank

Systems Analysis And Design in a Changing World 6th Edition By John W. Satzinger – Test Bank

 

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Sample Questions Are Posted Below

 

SADCW-6ed Chapter 5: Extending the Requirements Models

 

TRUE/FALSE

 

1. An actor is always outside of the automation boundary.

 

ANS:  T                    PTS:   1                    REF:   p121

 

2. Two difference scenarios of a use case would normally be described in a single fully developed use case description.

 

ANS:  F                    PTS:   1                    REF:   p123

 

3. A good way to describe a use case scenario is with a state chart.

 

ANS:  F                    PTS:   1                    REF:   p132

 

4. Activity diagrams are not helpful when the flow of activities is too complex.

 

ANS:  F                    PTS:   1                    REF:   p125

 

5. An activity diagram and the flow of activities in a fully developed use case description serve the same purpose.

 

ANS:  T                    PTS:   1                    REF:   p125

 

6. Since an activity diagram is not object-oriented (e.g. no objects), it is not a standard model of the object-oriented Unified Modeling Language (UML).

 

ANS:  F                    PTS:   1                    REF:   p125

 

7. In a system sequence diagram the order of the messages is determined by numbering the messages.

 

ANS:  F                    PTS:   1                    REF:   p127

 

8. In a system sequence diagram a box refers to a class of objects.

 

ANS:  F                    PTS:   1                    REF:   p127

 

9. A true/false condition on a sequence diagram indicates whether the message can be processed or not.

 

ANS:  F                    PTS:   1                    REF:   p129

 

10. A loop frame and an asterisk mean the same thing in a sequence diagram.

 

ANS:  T                    PTS:   1                    REF:   p129

 

11. On a sequence diagram, a message represents a service request.

 

ANS:  T                    PTS:   1                    REF:   p127

 

12. An Opt frame and an Alt frame do essentially the same thing.

 

ANS:  F                    PTS:   1                    REF:   p130

 

13. An Opt frame and a true/false condition on a message serve essentially the same purpose.

 

ANS:  T                    PTS:   1                    REF:   p129

 

14. Activity diagrams are not helpful in developing system sequence diagrams (SSDs).

 

ANS:  F                    PTS:   1                    REF:   p130

 

15. In the object-oriented approach to systems development, the flow of information is achieved by sending messages either to and from actors or back and forth between internal objects.

 

ANS:  T                    PTS:   1                    REF:   p126

 

16. In an interaction diagram, messages are sent and received by individual objects, not by classes.

 

ANS:  T                    PTS:   1                    REF:   p127

 

17. In a sequence diagram, a message is considered to be an action that is invoked on the destination object.

 

ANS:  T                    PTS:   1                    REF:   p127

 

18. Activity diagrams cannot be used to describe processes that involve automated system activities.

 

ANS:  F                    PTS:   1                    REF:   p126

 

19. In an activity diagram, a separate use case may used as part of the workflow.

 

ANS:  T                    PTS:   1                    REF:   p126

 

MULTIPLE CHOICE

 

1. Another way to think of a actor using a use case is as a(n) _______.

a.	external entity	c.	system
b.	person	d.	role

 

 

ANS:  D                    PTS:   1                    REF:   p121

 

2. A unique set of internal activities within a use case which represents a unique path through the use case is called a(n) _______.

a.	workflow	c.	scenario
b.	sequence of activities	d.	critical path

 

 

ANS:  C                    PTS:   1                    REF:   p121

 

3. In a fully developed use case description the postcondition data describes what conditions?

a.	The status condition of the use case.	c.	The condition of the actor.
b.	The existence of domain model objects.	d.	The data that is output by the system.

 

 

ANS:  B                    PTS:   1                    REF:   p123

 

4. In a fully developed use case description the exception conditions represent what?

a.	What conditions might cause the system to crash.
b.	What conditions prevent the system from successfully completing the use case.
c.	What conditions will confuse the actor.
d.	Where the system might have “bugs” and produce erroneous results.

 

 

ANS:  B                    PTS:   1                    REF:   p123

 

5. In a fully developed use case description, the flow of activities is most similar to what?

a.	An activity diagram	c.	A state chart diagram
b.	A class diagram	d.	A system sequence diagram

 

 

ANS:  A                    PTS:   1                    REF:   p123

 

6. Numbering exception conditions, which often uses hierarchical numbering, in a fully developed use case description is helpful to _______.

a.	tie exception conditions to other diagrams or descriptions
b.	show which exception conditions are subordinate to other exceptions
c.	provide an identifier for each exception condition
d.	tie the exception condition to a processing step

 

 

ANS:  D                    PTS:   1                    REF:   p124

 

7. In a fully developed use case description normally the preconditions describe what?

a.	What objects must exist prior to the use case executes.
b.	What data the actor must have before the use case executes.
c.	Who the actors are that invoke the use case.
d.	What business conditions must occur before the use case is invoked.

 

 

ANS:  A                    PTS:   1                    REF:   p124

 

Which is correct?

a.	A	c.	C
b.	B	d.	D

 

 

ANS:  B                    PTS:   1                    REF:   p105, 107, 126

 

9. Which of the following is the best model to use to document the inputs and the outputs to a system?

a.	State chart diagram	c.	Activity diagram
b.	Fully developed use case description	d.	System sequence diagram

 

 

ANS:  D                    PTS:   1                    REF:   p126

 

10. A vehicle object is denoted with the following label.

a.	vehicle	c.	Vehicle
b.	Vehicle	d.	:Vehicle

 

 

ANS:  D                    PTS:   1                    REF:   p127

 

11. In UML terminology in a sequence diagram, a message refers to a(n) _______.

a.	input data	c.	event
b.	communication between actors	d.	action

 

 

ANS:  D                    PTS:   1                    REF:   p127

 

12. In a sequence diagram a horizontal dashed line represents what?

a.	A return message	c.	A lifeline
b.	An input message	d.	An event

 

 

ANS:  A                    PTS:   1                    REF:   p127

 

13. In a sequence diagram the syntax of a message is given by the following:

[A] B := C (D) The letter B represents what?

a.	message name	c.	true/false condition
b.	return value	d.	parameter list

 

 

ANS:  B                    PTS:   1                    REF:   p129

 

14. In a sequence diagram the message-name is usually given in what format?

a.	verb-noun	c.	action-object
b.	noun-verb	d.	object-action

 

 

ANS:  A                    PTS:   1                    REF:   p127

 

15. If the True/False condition on a message evaluates to false in a sequence diagram, which of the following is correct?

a.	The message is false.	c.	The message is not processed.
b.	The message has no return value.	d.	The message is not sent.

 

 

ANS:  D                    PTS:   1                    REF:   p129

 

16. Which of the following documents information about classes that are part of the problem domain of the user?

 

a.	Activity diagram	c.	Use case diagram
b.	State machine diagram	d.	System sequence diagram

 

 

ANS:  B                    PTS:   1                    REF:   p132

 

17. For real-world objects the state of an object is the same as its _______ .

a.	lifeline	c.	attribute values
b.	status condition	d.	persistence

 

 

ANS:  B                    PTS:   1                    REF:   p133

 

18. In a transition label in a state machine the syntax is A(B)[C]/D.  The D stands for what?

a.	transition name	c.	action expression
b.	true/false condition	d.	input parameters

 

 

ANS:  C                    PTS:   1                    REF:   p134

 

19. The guard-condition on a transition indicates what?

a.	Whether the transition fires.	c.	Whether the object is in the correct state.
b.	Whether the action-expression executes.	d.	Whether the trigger message is received.

 

 

ANS:  A                    PTS:   1                    REF:   p135

 

20. An action-expression occurs when?

a.	Before the object leaves the origin state.
b.	After the object enters the destination state.
c.	Before the object enters the destination state.
d.	Before the transition fires.

 

 

ANS:  C                    PTS:   1                    REF:   p135

 

21. On a systems sequence diagram, ____ indicate(s) a true/false condition.

a.	( )	c.	{ }
b.	[ ]	d.	*

 

 

ANS:  B                    PTS:   1                    REF:   p129

 

22. In a state machine diagram, a state is represented by a(n) ____.

a.	oval	c.	square
b.	black dot	d.	arrow

 

 

ANS:  A                    PTS:   1                    REF:   p134

 

23. To document ____, draw a composite state with the lower portion divided into multiple compartments for each concurrent path of behavior.

a.	simple nested states	c.	concurrent behavior of different objects
b.	concurrent behavior of a single object	d.	simple paths

 

 

ANS:  B                    PTS:   1                    REF:   p135-146

 

24. Which of the following is NOT an element in a transition label?

a.	trigger	c.	guard condition
b.	transition name	d.	action expression

 

 

ANS:  A                    PTS:   1                    REF:   p134

 

25. A message event causes what to happen?

a.	An activity to finish.	c.	A guard condition to be evaluated.
b.	A message to fire.	d.	A transition to fire.

 

 

ANS:  D                    PTS:   1                    REF:   p133-134

 

26. Which of the following is NOT a step in the development of a state machine diagram?

a.	List all the status conditions for an object.
b.	Identify state exiting transitions.
c.	Expand the name of each state to identify concurrent activities.
d.	Sequence the state-transition fragments.

 

 

ANS:  C                    PTS:   1                    REF:   p137-138

 

27. A state machine diagram is used to document the states and transitions of a(n) ________.

a.	Business process	c.	Message
b.	Use case	d.	Object

 

 

ANS:  D                    PTS:   1                    REF:   p132-134

 

28. The ____ are the primary models from which other models draw information.

a.	statechart diagram and the problem domain class diagram.
b.	system sequence diagram and the activity diagram
c.	use case diagram and the problem domain class diagram
d.	use case description and the use case diagram

 

 

ANS:  C                    PTS:   1                    REF:   p143

 

29. Which of the following is NOT an advantage of object-oriented modeling with several models is that _____.

a.	developing new models allows the analyst to discard unnecessary diagrams.
b.	developing new models ensures a consistency in the requirements.
c.	developing new models helps correct previously drawn diagrams
d.	developing new models helps gain deeper understanding of user requirements.

 

 

ANS:  A                    PTS:   1                    REF:   p143

 

MULTIPLE RESPONSE

 

1. Two types of interaction diagrams are: (Choose two)

a.	Activity diagrams	d.	Class diagrams
b.	Sequence diagrams	e.	Communication diagrams
c.	State chart diagrams	f.	Package diagrams

 

 

ANS:  B, E                PTS:   2                    REF:   p126

 

2. Two methods to show a repeating message are: (Choose two)

a.	Dashed arrow	d.	Opt frame
b.	Brackets  [  ]	e.	Loop frame
c.	Asterisk *	f.	Alt frame

 

 

ANS:  C, E                PTS:   2                    REF:   p129

 

3. Two methods to show a return value are: (Choose two)

a.	value :=	d.	:= value
b.	[ value ]	e.	Solid arrow with value
c.	( value )	f.	Dashed arrow with value

 

 

ANS:  A, F                PTS:   2                    REF:   p127-129

 

COMPLETION

 

1. A textual model that describes the processing details of a use case is called a(n) ________.

 

ANS:  use case description

 

PTS:   2                    REF:   p121

 

2. Use cases may have different “paths” or sequence of steps through the use case.  These different paths are called _______ .

 

ANS:

scenarios

scenario

instance

instances

use case instance

use case instances

 

PTS:   2                    REF:   p121

 

3. A certain set of values or statuses that must exist before a use case begins is called a(n) _______.

 

ANS:

precondition

pre-condition

 

PTS:   2                    REF:   p122

 

4. A certain set of values or statuses that must exist after a use case completes its processing is called a(n) _______.

 

ANS:

postcondition

post-condition

 

PTS:   2                    REF:   p122

 

5. The diagram model that is useful to document the flow of activities on a fully developed use case description is called a(n) _______ diagram.

 

ANS:  activity

 

PTS:   2                    REF:   p125

 

6. A diagram that shows the messages between an actor and the system is called a(n) _______.

 

ANS:

system sequence diagram

system-sequence diagram

 

PTS:   2                    REF:   p126

 

7. Vertical dashed lines on a system sequence diagram are used to depict a(n) what?

 

ANS:

lifeline

object lifeline

 

PTS:   2                    REF:   p127

 

8. An arrow on a system sequence diagram is used to depict a(n) what?

 

ANS:  message

 

PTS:   2                    REF:   p127

 

9. A box in a system sequence diagram refers to a(n) what?

 

ANS:  object

 

PTS:   2                    REF:   p127

 

10. On a sequence diagram when multiple messages are included within a repeating loop a(n) _______  is used to document it.

 

ANS:  loop frame

 

PTS:   2                    REF:   p129

 

11. On a sequence diagram a short notation that indicates a repeating message is a(n) _______.

 

ANS:

asterisk

*

 

PTS:   2                    REF:   p129

 

12. In a sequence diagram the syntax of a message is given by the following:

[A] B := C (D) The letter D represents what?

 

ANS:

parameter-list

parameter list

parameters

input parameters

 

PTS:   2                    REF:   p129

 

13. In a sequence diagram the syntax of a message is given by the following:

[A] B := C (D) The letter B represents what?

 

ANS:

return-value

return-values

return value

return values

 

PTS:   2                    REF:   p129

 

14. To show if-then-else condition on a sequence diagram use a(n) ______.

 

ANS:

alt frame

alt-frame

 

PTS:   2                    REF:   p129

 

15. A condition during an object’s life when it satisfies some criterion is called a(n) _______.

 

ANS:  state

 

PTS:   2                    REF:   p132

 

16. The movement of an object from one state to another is done through the process of a(n) _______.

 

ANS:  transition

 

PTS:   2                    REF:   p134

 

17. A UML diagram that shows the life of an object in states and transitions is called a(n) _______.

 

ANS:

state machine diagram

state-machine diagram

state machine

state-machine

 

PTS:   2                    REF:   p134

 

18. When an object moves from one state to another the ending state is called a(n) _______ .

 

ANS:

destination state

destination

 

PTS:   2                    REF:   p134

 

19. The beginning state of an object when its states are diagrammed is called a(n) _______.

 

ANS:

pseudostate

pseudo-state

 

PTS:   2                    REF:   p134

 

20. In a state-machine diagram when an object is in multiple states at the same time it is called _______.

 

ANS:

concurrency

concurrent state

concurrent states

 

PTS:   2                    REF:   p135

 

21. In a state-machine diagram when one state is high-level in that it contains other states of an object, it is called a(n) ______.

 

ANS:  composite state

 

PTS:   2                    REF:   p135

 

ESSAY

 

1. Briefly describe the purpose of a system sequence diagram.

 

ANS:

A system sequence diagram (SSD) is used to describe the flow of information into and out of the automated system. Thus, an SSD documents the inputs and the outputs and identifies the interaction between actors and the system.

 

PTS:   5                    REF:   p126

 

2. List three types of frame notation in sequence diagrams.

 

ANS:

Loop frame

Opt frame

Alt frame

 

PTS:   5                    REF:   p130, 128