Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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An object has certain ____, like the make, model, and color of a car.
a. | keys | c. | indices | b. | attributes | d. | packets |
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2.
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An object’s ____ are the tasks or functions the object performs.
a. | messages | c. | instances | b. | commands | d. | methods |
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3.
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Your car performs a(n) ____ called OPERATE WIPERS when you send a message by
moving the proper control.
a. | method | c. | command | b. | instance | d. | objective |
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4.
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A(n) ____ represents a real person, place, event, or transaction.
a. | object | c. | command | b. | instance | d. | method |
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5.
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____ are characteristics that describe the object.
a. | Indices | c. | Packets | b. | Attributes | d. | Keys |
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6.
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A(n) ____ is a group of similar objects.
a. | aggregate | c. | class | b. | concatenation | d. | packet |
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7.
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A(n) ____ is a specific member of a class.
a. | key | c. | lifeline | b. | index | d. | instance |
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8.
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Your red Mustang is a(n) ____ of the CAR class.
a. | index | c. | metric | b. | key | d. | instance |
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9.
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The number of ____ needed to describe an object depends on the business
requirements of the information system and its users.
a. | attributes | c. | indices | b. | packets | d. | keys |
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10.
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In an object-oriented system, objects can ____ certain attributes from other
objects.
a. | relate | c. | inherit | b. | concatenate | d. | reformat |
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11.
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A(n) ____ defines specific tasks that an object can perform.
a. | attribute | c. | command | b. | method | d. | message |
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12.
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A ____ is a command that tells an object to perform a certain method.
a. | dictum | c. | statement | b. | message | d. | baseline |
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13.
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An object belongs to a group or category called a(n) ____.
a. | catalog | c. | index | b. | roster | d. | class |
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14.
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____ enables an object to derive one or more of its attributes from another
object.
a. | Concatenation | c. | Inheritance | b. | Encapsulation | d. | Polymorphism |
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15.
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In a use case, an external entity is called a(n) ____.
a. | benefit | c. | domain | b. | cost | d. | actor |
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16.
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A use case ____ is a visual summary of several related use cases within a system
or subsystem.
a. | description | c. | schematic | b. | diagram | d. | outline |
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17.
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When you construct a ____, you review the use case and identify the classes that
participate in the underlying business transaction.
a. | class diagram | c. | use case schematic | b. | sequence diagram | d. | DFD |
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True/False
Indicate whether the
statement is true or false.
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18.
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An object treats data and processes separately.
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19.
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Customer objects can perform specific tasks, such as placing an order or paying
a bill.
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20.
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Just as objects are similar to adjectives, attributes resemble verbs that
describe what and how an object does something.
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21.
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System analysts define an object’s attributes during the systems design
process.
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22.
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By limiting access to internal processes, an object prevents its internal code
from being altered by another object or process.
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23.
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All relationships have equal weight; none is stronger than any other.
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24.
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After you identify the objects, classes, and relationships, you are ready to
prepare an object relationship diagram that will provide an overview of the system.
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25.
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Use cases cannot interact with other use cases.
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26.
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When the outcome of one use case is incorporated by another use case, we say the
second use case uses the first case.
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27.
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When you identify use cases, it is important to keep all related transactions
separate.
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28.
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Class diagrams evolve into code modules, data objects, and other system
components.
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29.
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In a sequence diagram, classes that send or receive messages are shown at the
bottom of the diagram.
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30.
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In a state transition diagram, the states appear as rounded rectangles with the
state names inside.
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31.
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In a state transition diagram, the circle to the left is the final state.
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32.
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Sequence diagrams, state transition diagrams, and activity diagrams are dynamic
modeling tools that can help a systems analyst understand how objects behave and interact with the
system.
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33.
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If you do not use a CASE-generated model, it is not necessary that a diagram or
object definition be supported by documentation.
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Completion
Complete each
statement.
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34.
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You can view an object as a(n) ____________________, because a message to the
object triggers changes within the object without specifying how the changes must be carried
out.
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35.
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The black box concept is an example of ____________________, which means that
all data and methods are self-contained.
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36.
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A(n) ____________________ shows the object classes and relationships involved in
a use case.
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37.
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The ____________________ indicates when an object sends or receives a
message.
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38.
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A(n) ____________________ resembles a horizontal flowchart that shows the
actions and events as they occur.
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Matching
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Identify the letter of the choice that best matches the phrase or
definition. a. | class diagram | f. | activity
diagram | b. | CASE tools | g. | object modeling | c. | lifeline | h. | black box | d. | object relationship
diagram | i. | UML | e. | state transition diagram | j. | system boundary |
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39.
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Does not want or need outside interference.
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40.
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Shows objects and how they interact to perform business functions and
transactions.
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41.
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After you identify this, you place the use cases on the diagram, add the
actors, and show the relationships.
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42.
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In this, lines show relationships between classes and have labels identifying
the action that relates the two classes.
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43.
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Shows the order in which the actions take place and identify the
outcomes.
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44.
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Ensure consistency and provide common links so that once objects are described
and used in one part of the design, they can be reused multiple times without further effort.
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45.
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Requires many types of diagrams to represent the proposed system.
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