Deck 2: The Concept of Object Orientation

Question 1

When using an object-oriented approach to software development we create models using ________, their relationships, and their interactions.

A) programs
B) system analysts
C) objects
D) project mangers

Answer 1

objects

Question 2

Object-oriented analysis and design, coupled with ________, is used as the most effective technique to build software and information systems.

A) object-oriented technology
B) implementation
C) requirement
D) maintenance

Answer 2

object-oriented technology

Question 3

An object is ________.

A) something that is perceived as an entity and referred to by name
B) something perceptible by one or more of the senses
C) something intelligible or perceptible by the mind
D) all of the above

Answer 3

all of the above

Question 4

An object is a thing and can be ________.

A) animate or inanimate
B) human or non-human
C) tangible or non-tangible
D) any of the above

Question 5

The identity of an object is identified by its ________.

A) name
B) presence
C) value
D) none of the above

Question 6

Attributes of an object constitute what an object ________, while operations describe what it ________.

A) does, is
B) is, does
C) has, predicts
D) suggests, presents

Question 7

Features, properties, or characteristics of an object are represented by its ________.

A) values
B) identity
C) attributes
D) name

Question 8

Attributes are usually paired with ________.

A) values
B) features
C) identity
D) name

Question 9

Consider the two phrases describing a telephone: has a microphone and can connect to the telephone network. These two phrases are ________ and ________, respectively.

A) attribute, operation
B) operation, attribute
C) state, attribute
D) state, operation

Question 10

An object is the subject of a sentence with an active voice, and the ________ expresses an operation.

A) action
B) subject
C) verb
D) voice

Question 11

A "student becomes a graduate" describes the ________ of object "student."

A) state
B) attribute
C) name
D) identity

Question 12

________ is the condition of an object at a certain stage in its lifetime.

A) Attribute
B) Identity
C) Operation
D) State

Question 13

An infant boy grows to be a 80-year-old man. The new state of the object is ________.

A) a grandfather
B) an old and rich man
C) an old and wise man
D) all or any of the above

Question 14

Class is a set of objects that share the same ________.

A) name
B) state
C) attributes and operations
D) all of the above

Question 15

"The employee name is Richard Smith and he checks the inventory periodically." In this sentence, "Richard Smith" is the ________ of attribute "name"

A) class
B) object
C) value
D) operation

Question 16

In object-oriented technique, the opposite of generalization is ________.

A) degeneralization
B) abstraction
C) specialization
D) none of the above

Question 17

An instance is the concrete manifestation of a ________.

A) class
B) object
C) state
D) attribute

Question 18

An object can be an instance of numerous classes that have ________ relationships to each other.

A) parallel
B) hierarchical
C) both A & B
D) none of the above

Question 19

A superclass results from ________ a set of classes.

A) generalizing
B) class hierarchy of
C) specializing
D) all of the above

Question 20

A subclass results from ________ a superclass.

A) generalization
B) class hierarchy of
C) specializing
D) all of the above

Question 21

The relationship among superclasses and subclasses is called ________.

A) generalization
B) class hierarchy
C) specializing
D) none of the above

Question 22

Information systems are composed of ________.

A) virtual objects
B) real objects
C) any object
D) computer objects

Question 23

A class is a(n)________ for a virtual object.

A) abstraction
B) template
C) collection
D) both A & B

Question 24

Which of the following is NOT a type of class for virtual objects?

A) computer class
B) business class
C) utility classes
D) control class

Question 25

When you use an ATM, encapsulation ensures that ________.

A) you are not burdened with the complexity of how the machine works
B) only operations that you are allowed are performed
C) the way the machine operates is not changed
D) all of the above

Question 26

The phrase "object as black box" refers to ________.

A) encapsulation
B) information hiding
C) generalization
D) both A & B

Question 27

Together, encapsulation and information hiding turn an object into a black box dividing the space in which the object lives into ________ and ________.

A) indoor, outdoor
B) private, public
C) upside, downside
D) general, specific

Question 28

Objects interact through ________ when offering services or operation to the public.

A) interfaces
B) business classes
C) public services
D) public operations

Question 29

A system development team is an example of a(n) ________ relationship

A) composition
B) generalization
C) aggregation
D) public class

Question 30

Human body is an example of a(n) ________ relationship.

A) composition
B) generalization
C) aggregation
D) public class

Question 31

"Art" is an example of a(n) ________.

A) abstract object
B) concrete object
C) real object
D) virtual object

Question 32

________ literally means "many shapes."

A) Polymath
B) Polynomial
C) Polymorphism
D) Polypheric

Question 33

In procedural languages, the basic building blocks of a program are ________.

A) procedures
B) objects
C) functions
D) A or C

Question 34

Object-oriented analysis relies on the ________ of information systems.

A) logical modeling
B) physical modeling
C) abstract modeling
D) concrete modeling

Question 35

Design develops the results of analysis into a(n) ________ model for building the system.

A) conceptual
B) abstract
C) concrete
D) physical

Question 36

Analysis of a system helps us discover the concepts of the real world and build a(n) ________ of the product.

A) conceptual model
B) abstract model
C) physical model
D) concrete model

Question 37

UML is a modeling language for ________ analysis and design

A) object-oriented system
B) unified modeling system
C) real world system
D) World Wide Web system

Question 38

From UML perspective, ________ view reflects the conceptual view of the system.

A) developer
B) owner
C) analyst
D) designer

Question 39

From UML perspective, ________ view reflects the logical view of the system.

A) developer
B) owner
C) architect
D) client

Question 40

From UML perspective, ________ view reflects the physical view of the system.

A) builder
B) owner
C) client
D) architect

Question 41

A Symphony is an instance of Classical Music that descends from Music which, in turn, is a child of Art..

Question 42

Object-oriented technology is a response to an ever-increasing demand for simple information systems.

Question 43

To understand object-oriented technology, methodology, and modeling, we don't need to understand objects.

Question 44

State is the condition of an object at a certain stage in its lifetime.

Question 45

The same object cannot be described by several states simultaneously.

Question 46

A class is a result of classification.

Question 47

Abstraction makes the distinction between entities.

Question 48

To say that somebody is "in a class of his own" really means that a person is so unique that he cannot be generalized into a class.

Question 49

An object cannot be an instance of numerous classes.

Question 50

The most generalized class is "thing."

Question 51

Virtual objects embody the same concepts as real objects, but are created from concepts instead of giving rise to them.

Question 52

In object-oriented vocabulary, utility classes are usually called entity classes.

Question 53

Attributes and operations of virtual objects are defined by their classes.

Question 54

The concept of information hiding is closely related to encapsulation.

Question 55

An object provides services through its interface.

Question 56

The term "interface" must be reinforced by the qualifier "private."

Question 57

An object cannot consist of more objects.

Question 58

The relationship of one object to its component objects is called aggregation.

Question 59

"Literature" is an abstract class because we have found it to be too general to satisfactorily represent a specific literary work.

Question 60

Polymorphism is closely related to inheritance.

Question 61

Smalltalk is one of the earlier object-oriented languages.

Question 62

Smalltalk was created by the Learning Research group at IBM.

Question 63

Complex products, regardless of the field to which they belong, do not need modeling.

Question 64

UML models are not compatible with object-oriented languages.

Question 65

UML offers a set of graphical elements that are combined to form diagrams. Each diagram is a visual presentation of the system.

Question 66

UML supports the three major activities of system development: analysis, design, and implementation.

Question 67

Dynamic modeling represents how the components of the system interact with the outside world and with each other to satisfy the structural requirements of the system.

Question 68

Structural modeling represents the components of the system and their interrelationships.

Question 69

Behavioral modeling represents the interaction of the system with the inside world.

Question 70

Grady Booch introduced "use case" modeling concept.

Question 71

Aggregation is a strict form of composition when the life of the part is tied to the life of the whole.

Question 72

A business class reflects a class of objects in the real world.

Question 73

"Instance" is used instead of the term "object" when the purpose is to emphasize the relationship between the object and the class.

Question 74

Virtual objects are created from real life instances.

Question 75

Real objects and virtual objects embody different concepts.

Question 76

Describe object-oriented information systems.

Question 77

Define the characteristics of a real object.

Question 78

Elaborate on the following: "An identity of an object is unique and unchanging."

Question 79

What is the difference between attribute and operation of an object?

Question 80

Describe the state of an object and explain its relation to attribute and object identity.