Object Oriented System Design MCQ: Practice Questions & Answers (English)

Object Oriented System DesignMediumProgramming Principles

1.

Which of the following concept is often expressed by the phrase, 'One interface, multiple methods'?

A

Abstraction

B

Polymorphism

C

Inheritance

D

Encapsulation

Object Oriented System DesignMediumProgramming Principles

2.

Which Keyword from the following is used to inherit properties from one class into another?

A

extends

B

subclasses

C

native

D

all of the mentioned

Object Oriented System DesignMediumProgramming Principles

3.

Which of the following supports the concept of hierarchical classification?

A

Polymorphism

B

Encapsulation

C

Abstraction

D

Inheritance

Object Oriented System DesignMediumProgramming Principles

4.

Which of the following is a mechanism by which object acquires the properties of another object?

A

Encapsulation

B

Abstraction

C

Inheritance

D

Polymorphism

Object Oriented System DesignMediumProgramming Principles

5.

How will a class protect the code inside it?

A

Using Access specifiers

B

Abstraction

C

Use of Inheritance

D

All of the mentioned

Object Oriented System DesignMediumProgramming Principles

6.

What is 'Basis of Encapsulation'?

A

object

B

class

C

method

D

all of the mentioned

Object Oriented System DesignMediumProgramming Principles

7.

Which of the these is the functionality of 'Encapsulation'?

A

Binds together code and data

B

Using single interface for general class of actions.

C

Reduce Complexity

D

All of the mentioned

Object Oriented System DesignMediumProgramming Principles

8.

Which of the following mechanisms is/are provided by Object Oriented Language to implement Object Oriented Model?

A

Encapsulation

B

Inheritance

C

Polymorphism

D

All of the mentioned

Object Oriented System DesignMediumProgramming Principles

9.

Which of the following is the functionality of 'Data Abstraction'?

A

Reduce Complexity

B

Binds together code and data

C

Parallelism

D

None of the mentioned

Object Oriented System DesignMediumObject Oriented Programming

10.

Which is a named memory location assigned a value by the program?

A

variable

B

literal

C

identifier

D

None of the mentioned

Object Oriented System DesignMediumObject Oriented Programming

11.

Which of the following is called as 'Compilation unit'?

A

Object file

B

Byte code

C

Source file

D

All of the mentioned

Object Oriented System DesignMediumObject Oriented Programming

12.

Java Compiler translates the source code into?

A

Machine code

B

Assembly code

C

Byte code

D

JVM code

Object Oriented System DesignMediumObject Oriented Programming

13.

Which of the following is/are advantage of using object oriented programming?

A

Code Reusability

B

Can create more than one instance of a class without interference

C

Platform independent

D

All of the mentioned

Object Oriented System DesignMediumObject Oriented Programming

14.

Which of the following approach is followed by Object Oriented Language during the execution of a program?

A

Bottom up approach

B

Top down approach

C

Both a and b

D

None of the mentioned

Object Oriented System DesignMediumObject Oriented Programming

15.

Which of the following Paradigm is followed by Object Oriented Language Design?

A

Process-Oriented Model

B

Data Controlling access to code.

C

Both a and b

D

None of the mentioned

Object Oriented System DesignMediumObject Oriented Programming

16.

Which of the following approach help us understand better about Real time examples, say Vehicle or Employee of an Organisation?

A

Procedural approach

B

Object Oriented approach

C

Both a and b

D

None of the mentioned

Object Oriented System DesignMediumFoundations Of Object Model

17.

Which of the following statements about object model is true I. Object model encourages the reuse of software and entire design of the application. II. Object model produces systems that are built upon stable intermediate forms. III. Object model reduce the inherent in developing complex systems. IV. None of the mentioned

A

I, III

B

I, II

C

I, II, III

D

IV

Object Oriented System DesignMediumFoundations Of Object Model

18.

_____________ is the property that distinguishes an active object from one that is not active.

A

Persistence

B

Typing

C

Aggregation

D

Concurrency

Object Oriented System DesignMediumFoundations Of Object Model

19.

Subclass represents _______________ abstractions

A

Generalized abstractions

B

Specialization abstractions

C

Both

D

None of the mentioned

Object Oriented System DesignMediumFoundations Of Object Model

20.

Superclass represents ______________ abstractions

A

Generalized abstractions

B

Specialization abstractions

C

Both

D

None of the mentioned

Object Oriented System Design : Practice Questions and Answers