Question 1

On a class diagram,an association is signified by a double-ended arrow that connects the participating object classes.

Accepted Answer

False

Question 2

An entity that has a well-defined role in the application domain and has state,behavior,and identity characteristics defines:
A)object
B)attribute
C)actor
D)class

Accepted Answer

A

Question 3

An entity that has a well-defined role in the application domain and has state,behavior,and identity characteristics defines:
A)object
B)attribute
C)actor
D)class

Accepted Answer

A

Question 4

Which of the following represents how an object acts and reacts?
A)behavior
B)class
C)state
D)encapsulation

Accepted Answer

Behavior refers to how an object acts and reacts in response to certain inputs or events. Classes are templates for objects, encapsulation refers to the hiding of object data, and state refers to the current condition of an object.

Question 5

In UML,a class is represented by:
A)a rectangle with three compartments separated by horizontal lines
B)a circle in which the activity name is recorded
C)a double-lined ellipse in which the activity name is recorded
D)a diamond in which the activity name is recorded

Accepted Answer

A rectangle with three compartments separated by horizontal lines is the standard representation of a class in UML. The top compartment contains the name of the class, the middle compartment contains the attributes of the class, and the bottom compartment contains the methods of the class.

Question 6

An aggregation expresses a Part-of relationship between a component object and an aggregate object.

Accepted Answer

An aggregation does express a Part-of relationship between a component object and an aggregate object.

Question 7

An operation is an indication of how many objects participate in a given relationship.

Accepted Answer

An operation is a function that describes a specific action that can be performed on one or more objects. It does not indicate how many objects participate in a relationship.

Question 8

An aggregation expresses a Part-of relationship between a component object and an aggregate object.

Accepted Answer

An aggregation represents the relationship between a whole object and its parts. It is a part-of relationship where the component objects exist independently of the aggregate object.

Question 9

Which of the following provides an external interface to a class?
A)constructor
B)operation
C)view
D)association

Accepted Answer

An operation provides an external interface to a class by defining the behavior that can be invoked by other objects or classes. Constructors are used to create objects of a class and are not considered part of the external interface. Views are used to represent different perspectives or abstractions of a class and are not directly accessible to external entities. Associations describe relationships between classes and do not provide direct access to a class's behavior.

Question 10

An object class is a logical grouping of objects that have the same attributes and behaviors.

Accepted Answer

This is the definition of an object class in object-oriented programming. Objects in a class share the same properties and methods, which are defined in the class.

Question 11

Operations provide an external interface to a class.

Accepted Answer

This statement is true. Operations (also known as methods) define the behavior of a class and provide an interface for external code to interact with the class. This allows for encapsulation and abstraction, as the internal workings of the class can be hidden from external code.

Question 12

The technique of hiding the internal implementation details of an object from its external view is called incorporation.

Accepted Answer

The technique of hiding the internal implementation details of an object from its external view is called encapsulation.

Question 13

Which of the following provides an external interface to a class?
A)constructor
B)operation
C)view
D)association

Accepted Answer

An operation is a method or function that provides an external interface to a class, allowing other classes or objects to interact with it. Constructors create new instances of a class, views are used for displaying data within a user interface, and associations define relationships between classes.

Question 14

Showing the static structure of an object-oriented model: the object classes,their internal structure,and the relationships in which they participate is the purpose of a:
A)class diagram
B)sequence diagram
C)collaboration diagram

Accepted Answer

A class diagram is specifically designed to show the static structure of an object-oriented model, including object classes, their internal structure, and the relationships in which they participate. Sequence diagrams and collaboration diagrams, on the other hand, are used to represent the dynamic behavior of a system.

Question 15

Multiplicity indicates how many objects participate in a given relationship.

Accepted Answer

Multiplicity is a concept in UML (Unified Modeling Language) that describes the number of instances of one class that are associated with instances of another class in a relationship. It is represented using the notation of * (many) or 1 (one).

Question 16

Which of the following represents how an object acts and reacts?
A)behavior
B)class
C)state
D)encapsulation

Accepted Answer

Behavior refers to how an object acts and reacts in response to certain inputs or stimuli. The other choices are not related to the way an object behaves.

Question 17

Which of the following encompasses an object's properties and the values those properties have?
A)behavior
B)class
C)state
D)encapsulation

Accepted Answer

The term "state" refers to an object's properties and the values those properties have. Therefore, option C is the correct answer. Option A refers to how an object interacts with the outside world, option B refers to a blueprint for creating objects with specified properties and behaviors, and option D refers to the concept of bundling data and behavior within a single entity.

Question 18

The technique of hiding the internal implementation details of an object from its external view is called:
A)disassociation
B)encryption
C)generalization

Accepted Answer

The answer of The technique of hiding the internal implementation...

Question 19

An association between the instances of one or more entity types that is of interest to the organization best defines:
A)occurrence
B)relationship
C)coupling
D)cardinality

Accepted Answer

An association between the instances of one or more entity types is referred to as a relationship. Relationships are important to an organization because they help to define how entities relate to one another and are used to enforce business rules and constraints within a database system. Option A, occurrence, refers to a specific instance of an entity type. Option C, coupling, refers to the degree of interdependence between software modules. Option D, cardinality, refers to the numerical relationships between entities, such as one-to-one, one-to-many, or many-to-many.

Question 20

Which of the following encompasses an object's properties and the values those properties have?
A)behavior
B)class
C)state
D)encapsulation

Accepted Answer

The term "state" refers to an object's current condition, including its properties (also known as attributes or fields) and the values associated with those properties. The state can change over time as the object's properties are updated or modified. Behavior (A) refers to an object's actions or methods, while class (B) refers to a blueprint or template for creating objects with specific properties and behavior. Encapsulation (D) is a concept related to object-oriented programming that refers to the bundling of an object's data and methods within a single entity, with access to those items restricted to specific methods or classes. While encapsulation can impact an object's state, it is not synonymous with state.

Quiz 17: Objected-Oriented Analysis and Design: Object Modeling-Class Diagrams

On a class diagram,an association is signified by a double-ended arrow that connects the participating object classes.

An entity that has a well-defined role in the application domain and has state,behavior,and identity characteristics defines:

An entity that has a well-defined role in the application domain and has state,behavior,and identity characteristics defines:

Which of the following represents how an object acts and reacts?

In UML,a class is represented by:

An aggregation expresses a Part-of relationship between a component object and an aggregate object.

An operation is an indication of how many objects participate in a given relationship.

An aggregation expresses a Part-of relationship between a component object and an aggregate object.

Which of the following provides an external interface to a class?

An object class is a logical grouping of objects that have the same attributes and behaviors.

Operations provide an external interface to a class.

The technique of hiding the internal implementation details of an object from its external view is called incorporation.

Which of the following provides an external interface to a class?

Showing the static structure of an object-oriented model: the object classes,their internal structure,and the relationships in which they participate is the purpose of a:

Multiplicity indicates how many objects participate in a given relationship.

Which of the following represents how an object acts and reacts?

Which of the following encompasses an object's properties and the values those properties have?

The technique of hiding the internal implementation details of an object from its external view is called:

An association between the instances of one or more entity types that is of interest to the organization best defines:

Which of the following encompasses an object's properties and the values those properties have?