Trinity - CPP Interview Preparation Questions

C++ - QUESTIONS : PART 23

Classes refers to use of one or more classes within definition of another class, is called

Inheritance

Composition

Provision

None of them

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A class that have no pure virtual member functions, are called

Polymorphic class

Concrete class

Base class

Abstract clas

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In object oriented programming there are two distinct views, one is consumer and second is manufacturer view, that manufacturer's action are called

Functions

Operations

Methods

None of them

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A virtual member function is a member function that can

Be overridden by a subclass

Be derived from another class

Move to any class

None of them

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Specialization and derivation is another name of

Inheritance

Composition

Provision

Containment

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Object-oriented programming refers to use of

Derived classes

Virtual functions

PHP scripts

Both A and B

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A pure virtual function is initialized by

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An abstract base class is, that have

One or more pure virtual member functions

One or more child classes

One or more functions

All of them

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A class can serve as base class for many derived classes.

True

False

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When a class serves as base class for many derived classes, the situation is called:

polymorphism

hierarchical inheritance

hybrid inheritance

multipath inheritance

none of these

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When two or more classes serve as base class for a derived class, the situation is known as __________.

multiple inheritance

polymorphism

encapsulation

hierarchical inheritance

none of these

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Multiple inheritance leaves room for a derived class to have _______ members.

dynamic

private

public

ambiguous

none of these

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What is inheritance

Inheritance allows one class to reuse the state and behavior of another class.

It deals with dangling pointers

It deals with void pointers

It is type of class declaration

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What is abstract class

Whose objects cant be created

Whose objects can be created

Depends on class

None of above

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Which allows you to create a derived class that inherits properties from more than one base class?

Multilevel inheritance

Multiple inheritance

Hybrid Inheritance

Hierarchical Inheritance

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Which feature in OOP allows reusing code?

Polymorphism

Inheritance

Encapsulation

Data hiding

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class derived: public base1, public base2 { } is an example of

Polymorphic inheritance

Multilevel inheritance

Hierarchical inheritance

Multiple inheritance

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A class defined within another class is:

Nested class

Inheritance

Containership

Encapsulation

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C++ - QUESTIONS : PART 22

What is meant by containership?

class contains objects of other class types as its members

class contains objects of other class types as its objects

both a & b

none of the mentioned

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What does derived class does not inherit from the base class?

constructor and destructor

friends

operator = () members

all of the mentioned

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Which design patterns benefit from the multiple inheritance?

Adapter and observer pattern

Code pattern

Glue pattern

None of the mentioned

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What is meant by multiple inheritance?

Deriving a base class from derived class

Deriving a derived class from base class

Deriving a derived class from more than one base class

None of the mentioned

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Which symbol is used to create multiple inheritance?

Dot

Comma

Dollar

None of the mentioned

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Which of the following advantages we lose by using multiple inheritance?

Dynamic binding

Polymorphism

Both a & b

None of the mentioned

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When the inheritance is private, the private methods in base class are __________ in the derived class (in C++).

inaccessible

accessible

protected

public

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.Composition is often referred as "has-a" relation, whereas inheritance is referred as

with-relation

is-a relationship

to-a relationship

None of them

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A way to reuse existing classes to create new classes, is called

Composition

Inheritance

Containment

All of them

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Specialization and derivation is another name of

Inheritance

Composition

Provision

Containment

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Polymorphism is achieved by

Operators

Arrays

Constructors

Virtual function

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In object oriented programming there are two distinct views, one is consumer and second is manufacturer view, that consumer action are called

Functions

Operations

Methods

of them

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There are how many ways to use existing classes to define a new class?

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Composition is also called as

Containment

Provision

Aggregation

Both A and C

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When a data member of new class is an object of another class, it is called as

New class is a composite of other objects

New class is inherited

New class is aggregate of another

None of them

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We can define a new class from an existing class, by using

Inheritance

Composition

Constructors

Both A and B

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C++ allows objects of different types to respond differently to same function call, is called

Inheritance

Encapsulation

Polymorphism

None of them

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Polymorphism means

Many forms

Only one form

Hiding data

None of them

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