CBSE Class 12 Computer Science Object Oriented Concepts MCQs

Question: In Object-oriented methodology, the focus is on which of the following entities ?

a) Data

b) Functions

c) Objects

d) All of the above

Answer: Objects

Question: Which of the following best suits to Java ?

a) A procedural programming language

b) An object oriented programming language

c) A Query language

d) All of the above

Answer: An object oriented programming language

Question: Which of the following is used to distinguish objects from each other?

a) Attributes

b) State

c) Behavior

d) All of the above

Answer: State

Question: Which of the following is used to define common features of similar objects?

a) Class

b) Object

c) Methods

d) All of the above

Answer: Class

Question: Which of the following is not a visibility symbol ?

a) ~

b) *

c) #

d) -

Answer: *

Question: Which of the following is provided using encapsulation ?

a) Data protection

b) Data sharing

c) Separation of data and methods

d) All of these

Answer: Data protection

Question: Which of the following is enabled by data abstraction ?

a) Data protection

b) Data hiding

c) To hide implementation details of method manipulating the data

d) All of these

Answer: To hide implementation details of method manipulating the data

Question: With which of the following options polymorphism cannot be achieved ?

a) Method overloading

b) Operator overloading

c) Data hiding

d) All of these

Answer: Data hiding

Question: An aggregation model refers to which of the following relationships ?

a) 'is-a' relationship

b) 'is-like' relationship

c) 'a-part-of relationship

d) All of these

Answer: 'is-a' relationship

Question: An inheritance model refers to which of the following relationships ?

a) 'is-a' relationship

b) 'has-a' relationship

c) 'a-part-of relationship

d) All of these

Answer: 'is-a' relationship

Question: In class diagram, composition is represented using which of the following symbols ?

a) Empty diamond symbol

b) Filled diamond symbol

c) Empty triangle symbol

d) All of these

Answer: Filled diamond symbol

Question: Object-oriented programming concepts started originating in the_______

a) 1950s

b) 1960s

c) 1970s

d) 1980s

Answer: 1960s

Question: Since mid______object-oriented programming had become the main programming paradigm used in the creation of new software.

a) 1950s

b) 1960s

c) 1970s

d) 1980s

Answer: 1980s

Question: Some of the popular programming languages that support______programming are C++, Java, C#, VB.net, ASP.net and PHP.

a) Object-oriented

b) Structural

c) Modular

d) Procedural

Answer: Object-oriented

Question: The way of programming can be divided into______categories.

a) Four

b) Three

c) Two

d) One

Answer: Two

Question: Java is a_____programming language.

a) Object-oriented

b) Structural

c) Modular

d) Procedural

Answer: Object-oriented

Question: The categories are______and object-oriented.

a) Objective

b) Structure/procedural

c) Modular

d) Functional

Answer: Structure/procedural

Question: In_______programming, the focus is on writing functions or procedures which operate on data.

a) Procedural

b) Modular

c) Functional

d) None of these

Answer: Procedural

Question: In object-oriented_____the focus is on objects which contain data and functionality together.

a) Pattern

b) Prototype

c) Paradigm

d) Example

Answer: Paradigm

Question: The power of object-oriented programming language enables the programmer to create modular, reusable and_____code.

a) Complete

b) Accomplished

c) Perfect

d) Executable

Answer: Executable

Question: Flexibility is gained by being able to change or replace______without disturbing other parts of code.

a) Modules

b) Parts

c) Functions

d) Methods

Answer: Modules

Question: Object-oriented programming uses_____as its fundamental building block.

a) Method

b) Class

c) Object

d) Procedure

Answer: Object

Question: A computer language is object-oriented if they support four specific object properties called

a) Abstraction

b) Encapsulation

c) Polymorphism and Inheritance

d) All of these

Answer: All of these

Question: C# is a______programming language.

a) Object-oriented

b) Structural

c) Modular

d) Procedural

Answer: Object-oriented

Question: In the real world______are the entities of which the world is comprised.

a) Methods

b) Classes

c) Objects

d) Procedures

Answer: Objects

Question: Some objects can be______things like person, car or a cup of coffee.

a) Abstract

b) Concrete

c) Real

d) Solid

Answer: Concrete

Question: Some objects may be______that do not represent things which can be touched or seen.

a) Abstract

b) Concrete

c) Real

d) Solid

Answer: Abstract

Question: All objects have unique______and are distinguishable from each other.

a) Personality

b) Objects

c) Procedures

d) Identity

Answer: Identity

Question: In object-oriented terminology characteristics are known as properties or_______

a) Features

b) Attributes

c) Values

d) States

Answer: Attributes

Question: To uniquely distinguish one person from other,the______of its characteristics is used.

a) Worth

b) Cost

c) Value

d) Property

Answer: Value

Question: When two people have same name, they can be distinguished using other attributes like______

a) Color

b) Name

c) Birth-date

d) Behavior

Answer: Birth-date

Question: To identifythe value of the attributes is used.

a) Personality

b) Objects

c) Procedures

d) Identity

Answer: Objects

Question: There is always a behavior associated with

a) Personality

b) Objects

c) Procedures

d) Identity

Answer: Objects

Question: The behavior of objects is also known as

a) Method

b) Technique

c) Process

d) Procedure

Answer: Method

Question: The_______of the object can change due to its behavior.

a) State

b) Method

c) Status

d) Class

Answer: State

Question: Object can be described in terms of

a) What it is called (identity)

b) What it is (its state)

c) What it does (behavior)

d) All of these

Answer: All of these

Question: In object-oriented programming, attributes that describe the object are also referred to as_____fields.

a) Information

b) Method

c) Data

d) Name

Answer: Data

Question: The data attributes and behavioral methods associated with an object are collectively referred to as its____or features.

a) Component

b) Associate

c) Part

d) Member

Answer: Member

Question: _______system uses the concept of class that enables to express the set of objects that are abstractly equivalent, differing only in the values of their attributes.

a) Object-oriented

b) Value-oriented

c) Data-oriented

d) All of these

Answer: Object-oriented

Question: ______can be considered as a blueprint for various objects.

a) Method

b) Class

c) Object

d) Member

Answer: Class

Question: A class is a_______for multiple objects with similar features.

a) Image

b) Representation

c) Template

d) Guide

Answer: Template

Question: A class describes a group of objects with similar______and common behaviour.

a) Features

b) Attributes

c) Values

d) States

Answer: Attributes

Question: _______in the same class share a common semantic purpose.

a) Methods

b) Classes

c) Objects

d) Members

Answer: Objects

Question: _______is a general concept used to embody all the common features of a particular set of objects.

a) Method

b) Class

c) Object

d) Member

Answer: Class

Question: The class______presents a collection of classes, constraints and relationship among classes.

a) Diagram

b) Map

c) Drawing

d) Figure

Answer: Diagram

Question: _______can be used to create models of object-oriented software to help with design of an application.

a) ULM

b) UML

c) LUM

d) MUL

Answer: UML

Question: _______is a visual modeling language defined and maintained by the Object Management Group.

a) ULM

b) UML

c) LUM

d) MUL

Answer: UML

Question: _______specifies several diagrams for representing different aspects of a software application.

a) ULM

b) UML

c) LUM

d) MUL

Answer: UML

Question: The purpose of the class________is to model the static view of an application.

a) Diagram

b) Map

c) Drawing

d) Figure

Answer: Diagram

Question: The class's diagrams are only diagrams which can be directly mapped with object-oriented.

a) Methods

b) Procedures

c) Languages

d) Attributes

Answer: Languages

Question: In class diagram, a class is represented with an icon using a rectangle split into______sections to present name, attributes and behaviour.

a) One

b) Two

c) Three

d) Four

Answer: Three

Question: In the class diagram, the name is in the______section.

a) Top

b) Middle

c) Centre

d) Bottom

Answer: Top

Question: In the class diagram, the attributes or methods are in the_____section.

a) Top

b) Middle

c) Centre

d) Bottom

Answer: Middle

Question: In the class diagram, the behaviour or operations are in the_____section.

a) Top

b) Middle

c) Centre

d) Bottom

Answer: Bottom

Question: Full form of UML is______

a) Unified Modelling Language

b) United Modelling Language

c) United Model of Languages

d) None of these

Answer: Unified Modelling Language

Question: Full form of OMG is______

a) Oriented Management Group

b) Oriented Managing Group

c) Object Management Group

d) Object Management Grouping

Answer: Object Management Group

Question: In UML notation, an attribute is declared using the following syntax :

a) [][:[=]]

b) [][:]]

c) [][:] ]

d)[:[=]]

Answer: [] [:]]

Question: In an attribute declaration, the______brackets are optional.

a) Round

b) Chain

c) Angle

d) Square

Answer: Square

Question: In an attribute declaration, the values should be specified in the_____brackets.

a) Round

b) Chain

c) Angle

d) Square

Answer: Angle

Question: In an attribute declaration, the______can be private, protected, public or package.

a) Visibility

b) Invisible

c) Evident

d) Obvious

Answer: Visibility

Question: In an attribute declaration, the private visibility is represented by_____symbol.

a) -

b) #

c) +

d) ~

Answer: -

Question: In an attribute declaration, the protected visibility is represented by______symbol.

a) -

b) #

c) +

d) ~

Answer: #

Question: In an attribute declaration, the public visibility is represented by_____symbol.

a) -

b) #

c) +

d) ~

Answer: +

Question: In an attribute declaration, the package visibility is represented by_____symbol.

a) -

b) #

c) +

d) ~

Answer: ~

Question: Attribute generally refers to a______

a) Variable

b) Property

c) Value

d) Class

Answer: Variable

Question: _______type and initial value identify the type of data stored and its value at the start of the program.

a) Data

b) Date

c) Value

d) Class

Answer: Data

Question: ______is an example of declaring attribute.

a) Name:- string;

b) Name : string

c) Name ++string

d) Name = string

Answer: Name : string

Question: In UML notation, an operation is declared using_____syntax:

a) [](parameter list separated by comma):

b) [](parameter list separated by comma):

c) [](parameter list separated by comma):

d) None of these.

Answer: [](parameter list separated by comma):

Question: ________diagrams are independent of the programming language used for coding an application.

a) ULM

b) UML

c) LUM

d) MUL

Answer: UML

Question: _______are presented using their state during execution of an application.

a) Methods

b) Procedures

c) Classes

d) Objects

Answer: Objects

Question: Objects are_______

a) Dynamic

b) Vibrant

c) Colorful

d) All of these

Answer: Dynamic

Question: An object is also called an______

a) Image

b) Illustration

c) Instance

d) Occurrence

Answer: Instance

Question: For any computer program, two or more elements are data and________

a) Method

b) Function

c) Information

d) Procedure

Answer: Function

Question: Structured/Procedural programming views the two core elements as______separate entities.

a) One

b) Two

c) Three

d) None of these

Answer: Two

Question: ________programming views the two coreentities as single entity.

a) Object-oriented

b) Structured

c) Procedural

d) Instance

Answer: Object-oriented

Question: In______programming, data can be altered by any component of the program.

a) Object-oriented

b) Structured

c) Procedural

d) Instance

Answer: Procedural

Question: In object-oriented programming, the problem of modification can be solved using______

a) Polymorphism

b) Abstraction

c) Messaging

d) Encapsulation

Answer: Encapsulation

Question: Data and the methods that______data are guarded against modification or misuse by other components of the program.

a) Change

b) Modify

c) Manipulate

d) Imitate

Answer: Manipulate

Question: The mechanism of providing protection to data and methods of a program is called______

a) Polymorphism

b) Abstraction

c) Messaging

d) Encapsulation

Answer: Encapsulation

Question: ______is possible by wrapping data and methods into a single unit known as class and declaring them as private.

a) Encapsulation

b) Abstraction

c) Messaging

d) Polymorphism

Answer: Encapsulation

Question: ________members of the class are not available directly to outside world.

a) Private

b) Public

c) Void

d) Static

Answer: Private

Question: Data can be made available via public______to the outside world.

a) Messages

b) Methods

c) Function

d) Declarations

Answer: Methods

Question: Encapsulation provides______hiding capability.

a) Information

b) Data

c) Code

d) Class

Answer: Data

Question: _______keeps the data safe from unintended actions and inadvertent access by outside objects.

a) Polymorphism

b) Abstraction

c) Messaging

d) Encapsulation

Answer: Encapsulation

Question: ________programming discourages direct access to common data by other programs.

a) Object-oriented

b) Structured

c) Procedural

d) Instance

Answer: Object-oriented

Question: Only the object that______the data can change its content.

a) Holds

b) Possesses

c) Owns

d) Creates

Answer: Owns

Question: Other objects can view or change this data by sending message to the "owner".

a) Vendor

b) Businessman

c) Owner

d) Viewer

Answer: Owner

Question: Data______is a process of representing the essential features of the objects without including implementation detail.

a) Polymorphism

b) Abstraction

c) Messaging

d) Encapsulation

Answer: Abstraction

Question: _______is a concept that hides the complexity; it says what it does, but not how it is done.

a) Polymorphism

b) Abstraction

c) Messaging

d) Encapsulation

Answer: Abstraction

Question: Data______thus is a technique that relies on the separation of interface and implementation.

a) Polymorphism

b) Abstraction

c) Messaging

d) Encapsulation

Answer: Abstraction

Question: A user defined______with necessary input data parameters also provides data abstraction.

a) Messages

b) Methods

c) Function

d) Declarations

Answer: Function

Question: The signature of the function means the name of the function, number and type of parameters and the return type of______

a) Parameters

b) Methods

c) Parts

d) Variables

Answer: Parameters

Question: Data_____provides the skeleton or templates for the programmers use. The system hides certain details of how data is stored, created and maintained.

a) Polymorphism

b) Abstraction

c) Messaging

d) Encapsulation

Answer: Abstraction

Question: All that is______to the rest of the world is the abstract behaviour of the data type.

a) Invisible

b) Hidden

c) Seen

d) Visible

Answer: Visible

Question: ______or structures (struct) in C/C++, classes / Java are examples for data abstraction.

a) ADVT

b) TDA

c) DAT

d) ADT

Answer: ADT

Question: Full form of ADT is________

a) Abstraction Date Type

b) Abstract Date Type

c) Abstract Data Type

d) Abstract Data Template

Answer: Abstract Data Type

Question: In___it is simply defined a data type and a set of operations on it. The implementation of operations is not seen.

a) ADVT

b) TDA

c) DAT

d) ADT

Answer: ADT

Question: Encapsulation_____data by making them inaccessible from outside.

a) Hides

b) Protects

c) Displays

d) Harms

Answer: Protects

Question: _______enables to represent data in which the implementation details are hidden.

a) Polymorphism

b) Abstraction

c) Messaging

d) Encapsulation

Answer: Abstraction

Question: In object-oriented terminology, a call to a method is referred to as a______

a) Message

b) Function

c) Call

d) Letter

Answer: Message

Question: ________represents 'has-a' or 'a-part-of relationship between classes.

a) Aggregation

b) Polymorphism

c) Work

d) Messaging

Answer: Aggregation

Question: ______represents non-exclusive relationship between two classes.

a) Polymorphism

b) Aggregation

c) Inheritance

d) Abstraction

Answer: Aggregation

Question: In_____the class that forms part of the owner class can exist independently.

a) Polymorphism

b) Aggregation

c) Inheritance

d) Abstraction

Answer: Aggregation

Question: The life of an______of the part class is not determined by the owner class.

a) Variable

b) Parameter

c) Operator

d) Object

Answer: Object

Question: Although the motherboard is part of the computer, it can exist as a separate item independent of the_______

a) Workstation

b) System

c) Computer

d) Processor

Answer: Computer

Question: Basic aggregation is represented using an empty_______symbol next to the whole class.

a) Square

b) Diamond

c) Triangle

d) Circle

Answer: Diamond

Question: ________represents exclusive relationship between two classes.

a) Composition

b) Aggregation

c) Inheritance

d) Abstraction

Answer: Composition

Question: ______is a strong type of aggregation where the lifetime of the part class depends on the existence of the owner class.

a) Composition

b) Aggregation

c) Inheritance

d) Abstraction

Answer: Composition

Question: If an object of aggregating class is deleted, its part_______object also gets deleted.

a) Function

b) Message

c) Class

d) Variable

Answer: Class

Question: When an object of class Person is deleted, the object of class Name is also______

a) Removed

b) Deleted

c) Detached

d) Attached

Answer: Deleted

Question: _______property suits best with Java.

a) A Structured Language

b) An Object-oriented Language

c) A Procedural Language

d) An Interpreting Language

Answer: An Object-oriented Language

Question: is provided while using encapsulation.

a) Data Protection

b) Data Hiding

c) Data Sharing

d) Data and Methods Separation

Answer: Data Protection

Question: The focus is on_____entity in an object-oriented methodology.

a) Functions

b) Data

c) Classes

d) Objects

Answer: Objects

Question: In class diagram, basic aggregation is represented using which of the following symbols ?

a) Empty triangle symbol

b) Filled triangle symbol

c) Filled diamond symbol

d) Empty diamond symbol

Answer: Empty diamond symbol

Question: The data type for NAME variable should be______

a) String

b) Char

c) Date

d) Int

Answer: String

Question: The data type for BIRTHDATE variable should be____

a) String

b) Char

c) Date

d) Int

Answer: Date

Question: The data type for GENDER variable should be

a) String

b) Char

c) Double

d) Int

Answer: Char

Question: The data type for NO_OF_STUDENTS variable should be_______

a) String

b) Char

c) Double

d) Int

Answer: Int

Question: _______is used to define common features of similar objects.

a) Class

b) Procedure

c) Object

d) Method

Answer: Method

Question: The output of the function sqrt(25) is_______

a) 5

b) 10

c) 15

d) 20

Answer: 5

Question: A user defined______with necessary input data parameters also provides data abstraction.

a) Messages

b) Methods

c) Function

d) Declarations

Answer: Function

Question: The signature of the function means the name of the function, number and type of parameters and the return type of______

a) Parameters

b) Methods

c) Parts

d) Variables

Answer: Parameters

Question: Data_____provides the skeleton or templates for the programmers use. The system hides certain details of how data is stored, created and maintained.

a) Polymorphism

b) Abstraction

c) Messaging

d) Encapsulation

Answer: Abstraction

Question: All that is______to the rest of the world is the abstract behaviour of the data type.

a) Invisible

b) Hidden

c) Seen

d) Visible

Answer: Visible

Question: ______or structures (struct) in C/C++, classes / Java are examples for data abstraction.

a) ADVT

b) TDA

c) DAT

d) ADT

Answer: ADT

Question: Full form of ADT is________

a) Abstraction Date Type

b) Abstract Date Type

c) Abstract Data Type

d) Abstract Data Template

Answer: Abstract Data Type

Question: In___it is simply defined a data type and a set of operations on it. The implementation of operations is not seen.

a) ADVT

b) TDA

c) DAT

d) ADT

Answer: ADT

Question: Encapsulation_____data by making them inaccessible from outside.

a) Hides

b) Protects

c) Displays

d) Harms

Answer: Protects

Question: _______enables to represent data in which the implementation details are hidden.

a) Polymorphism

b) Abstraction

c) Messaging

d) Encapsulation

Answer: Abstraction

Question: In object-oriented terminology, a call to a method is referred to as a______

a) Message

b) Function

c) Call

d) Letter

Answer: Message

Question: ________represents 'has-a' or 'a-part-of relationship between classes.

a) Aggregation

b) Polymorphism

c) Work

d) Messaging

Answer: Aggregation

Question: ______represents non-exclusive relationship between two classes.

a) Polymorphism

b) Aggregation

c) Inheritance

d) Abstraction

Answer: Aggregation

Question: In_____the class that forms part of the owner class can exist independently.

a) Polymorphism

b) Aggregation

c) Inheritance

d) Abstraction

Answer: Aggregation

Question: The life of an______of the part class is not determined by the owner class.

a) Variable

b) Parameter

c) Operator

d) Object

Answer: Object

Question: Although the motherboard is part of the computer, it can exist as a separate item independent of the_______

a) Workstation

b) System

c) Computer

d) Processor

Answer: Computer

Question: Basic aggregation is represented using an empty_______symbol next to the whole class.

a) Square

b) Diamond

c) Triangle

d) Circle

Answer: Diamond

Question: ________represents exclusive relationship between two classes.

a) Composition

b) Aggregation

c) Inheritance

d) Abstraction

Answer: Composition

Question: ______is a strong type of aggregation where the lifetime of the part class depends on the existence of the owner class.

a) Composition

b) Aggregation

c) Inheritance

d) Abstraction

Answer: Composition

Question: If an object of aggregating class is deleted, its part_______object also gets deleted.

a) Function

b) Message

c) Class

d) Variable

Answer: Class

Question: When an object of class Person is deleted, the object of class Name is also______

a) Removed

b) Deleted

c) Detached

d) Attached

Answer: Deleted

Question: _______property suits best with Java.

a) A Structured Language

b) An Object-oriented Language

c) A Procedural Language

d) An Interpreting Language

Answer: An Object-oriented Language

Question: is provided while using encapsulation.

a) Data Protection

b) Data Hiding

c) Data Sharing

d) Data and Methods Separation

Answer: Data Protection

Question: The focus is on_____entity in an object-oriented methodology.

a) Functions

b) Data

c) Classes

d) Objects

Answer: Objects

Question: In class diagram, basic aggregation is represented using which of the following symbols ?

a) Empty triangle symbol

b) Filled triangle symbol

c) Filled diamond symbol

d) Empty diamond symbol

Answer: Empty diamond symbol

Question: The data type for NAME variable should be______

a) String

b) Char

c) Date

d) Int

Answer: String

Question: The data type for BIRTHDATE variable should be____

a) String

b) Char

c) Date

d) Int

Answer: Date

Question: The data type for GENDER variable should be

a) String

b) Char

c) Double

d) Int

Answer: Char

Question: The data type for NO_OF_STUDENTS variable should be_______

a) String

b) Char

c) Double

d) Int

Answer: Int

Question: _______is used to define common features of similar objects.

a) Class

b) Procedure

c) Object

d) Method

Answer: Method

Question: The output of the function sqrt(25) is_______

a) 5

b) 10

c) 15

d) 20

Answer: 5

Question: _______is generally referred to as 'is-a-kind-of relationship between two classes.

a) Composition

b) Aggregation

c) Inheritance

d) Abstraction

Answer: Inheritance

Question: ________refers to the capability of defining a new class of objects that inherits the characteristics of another existing class.

a) Inheritance

b) Composition

c) Aggregation

d) Messaging

Answer: Inheritance

Question: In object-oriented terminology_______class is called sub class or child class or derived class.

a) Latest

b) New

c) Old

d) Super

Answer: New

Question: The existing class is called______class or parent class or base class.

a) Sub

b) New

c) Super

d) Child

Answer: Super

Question: The data_______and methods of the super class are available to objects in the sub class without rewriting their declarations.

a) Attributes

b) Properties

c) Operators

d) Features

Answer: Attributes

Question: The above feature (mention in above question provides) reusability where existing method can be reused without______

a) Introduction

b) Availability

c) Definition

d) Redefining

Answer: Redefining

Question: Additionally new data and method members can be added to the______class as an extension.

a) Sub

b) New

c) Super

d) Child

Answer: Sub

Question: In a class diagram, inheritance is represented using an arrow pointing to______class.

a) Sub

b) New

c) Super

d) Child

Answer: Super

Question: _________is another name for inheritance or 'is a'relationship.

a) Aggregation

b) Composition

c) Inheritance

d) Generalization

Answer: Generalization

Question: ________refers to a relationship between two classes where one class is a specialized version of another.

a) Aggregation

b) Composition

c) Inheritance

d) Generalization

Answer: Generalization

Question: Common attributes and methods are defined in______class.

a) Sub

b) New

c) Super

d) Child

Answer: Super

Question: _________class is a specialized version with additional attributes and methods.

a) Sub

b) New

c) Super

d) Child

Answer: Sub

Question: A_______can be derived using more than parent classes.

a) Method

b) Program

c) Class

d) Variable

Answer: Class

Question: When a class is derived from two or more classes, it is known as multiple________

a) Aggregation

b) Composition

c) Inheritance

d) Generalization

Answer: Inheritance

Question: In_____class inherits from other classes in order to share, reuse or extend functionality.

a) Aggregation

b) Composition

c) Inheritance

d) Generalization

Answer: Inheritance

Question: In_______classes do not inherit from other classes, but are 'composed of other classes.

a) Aggregation

b) Composition

c) Inheritance

d) Generalization

Answer: Composition

Question: _________as methodology is playing a significant role in analysis, design and implementation of software system.

a) Object-oriented

b) Structure-oriented

c) Procedure-oriented

d) Aggregation-oriented

Answer: Object-oriented

Question: When a class contains objects of other class, the container class is called______class or whole class or aggregating class.

a) Sub

b) Owner

c) Super

d) Whole

Answer: Owner

Question: The class that is contained in owner class is known as_______class or part class or aggregated class.

a) Sub

b) Owner

c) Subject

d) Super

Answer: Subject

Question: ________represents non-exclusive relationship between two classes.

a) Aggregation

b) Composition

c) Inheritance

d) Generalization

Answer: Aggregation

Question: represents exclusive relationship between two classes.

a) Aggregation

b) Composition

c) Inheritance

d) Generalization

Answer: Composition

Question: When there is 'is-a' or 'a-kind-of relationship between two classes, there is_____relationship.

a) Aggregation

b) Composition

c) Inheritance

d) Generalization

Answer: Inheritance

Question: General features or common features of two classes are implemented in the______class.

a) Sub

b) Owner

c) Subject

d) Super

Answer: Super

Question: Special features of two classes are implemented in sub class.

a) Sub

b) Owner

c) Subject

d) Super

Answer: Sub

Question: In class diagram, composition is represented using which of the following symbols ?

a) Empty triangle symbol

b) Filled triangle symbol

c) Filled diamond symbol

d) Empty diamond symbol

Answer: Filled diamond symbol

Question: An inheritance model refers to which of the following relationships ?

a) Has-a-relationship'

b) A-part-of relationship

c) Is-a-part-of relationship

d) Is-a' relationship

Answer: Is-a' relationship

Question: Which of the following is enabled by data abstraction ?

a) Data protection

b) Data hiding

c) Hide implementation details

d) Hide relationship details

Answer: Hide implementation details

Question: Polymorphism cannot be achieved by which of the following ?

a) Operator overloading

b) Data hiding

c) Method overloading

d) None of these

Answer: Data hiding

Question: Which of the following model refers to an aggregation ?

a) A-part-of relationship

b) Is-like' relationship

c) Is-a' relationship

d) Has-a' relationship

Answer: A-part-of relationship

Question: _______is used to distinguish objects from each other.

a) Attributes

b) Behaviour

c) State

d) All of these

Answer: State