Class Hierarchies, Library & Containers Quiz 1

1 / 50

What must be an operand of operator delete?

Stack

Array

Pointer

Queue

2 / 50

What is the Run-Time Type Information?

Information about the functions

Information about the given block

Information about the variables

Information about an object?s data type at runtime

3 / 50

If a class is derived privately from a base class then ______________________________

all the members are inherited by the class but are hidden and cannot be accessible

no members of the base class is inherited

no derivation of the class gives an error

all members are accessible by the derived class

4 / 50

Which symbol is used to create multiple inheritances?

Dot

Dollar

star

Comma

5 / 50

Which of the following describes the protected access specifier?

The variable is not visible to its block

The variable is visible everywhere

The variable is visible to its block and to it?s derived class

The variable is visible only outside inside the block

6 / 50

To which of the following access specifiers are applicable?

Functions

Member data

Protected members

Both Member data & Functions

7 / 50

Members of which access specifiers are not inherited?

Private

None of the mentioned

Protected

Public

8 / 50

Which specifier makes all the data members and functions of base class inaccessible by the derived class?

protected

private

public

both private and protected

9 / 50

What is the operation for .*?

It separates the first operand and the second operand

It combines the first operand and the second operand

It combines the first operand and the second operand and terminates third operand

It reduces the data size

10 / 50

Pick the correct statement.

Virtual function are different in definitions only

Virtual function can have different names in the base and derived class

Virtual function does early binding

Virtual function cannot be applied in Multiple Inheritance classes

11 / 50

What are the things are inherited from the base class?

All of the mentioned

Constructor and its destructor

Friends

Operator=() members

12 / 50

Which is the best design choice for using pointer to member function?

Interface

Class

Structure

Block

13 / 50

Which operators are part of RTTI?

dynamic_cast[]

typeid

both dynamic_cast<> & typeid

dynamic_cast()

14 / 50

Which operators are used in the free store?

both new & delete

new

delete

terminate

15 / 50

What will happen when introduce the interface of classes in a run-time polymorphic hierarchy?

Merging of interface from debugging

Merging of interface from implementation

Separation of interface from implementation

Separation of interface from debugging

16 / 50

How many specifiers are used to derive a class?

17 / 50

What is the order of Constructors call when the object of derived class B is declared, provided class B is derived from class A?

Constructor of A only

Constructor of B followed by A

Constructor of A followed by B

Constructor of B only

18 / 50

What is meant by standard c++ library?

It is a header file

Step by step process

It is the collection of class definitions for standard data structures and a collection of algorithms

Collection of algorithms

19 / 50

What type of class member is operator new?

static

smart

const

dynamic

20 / 50

To which type of class, We can apply RTTI?

Static

Encapsulation

Polymorphic

Derived

21 / 50

What should be used to point to a static class member?

Dynamic pointer

Normal pointer

Static pointer

Smart pointer

22 / 50

Which design patterns benefit from the multiple inheritances?

Code pattern

Adapter and observer pattern

Glue pattern

Star pattern

23 / 50

Which is best for coding the standard library for c++?

no trailing underscores on names

complex objects are returned by value

have a member-swap()

all of the mentioned

24 / 50

What is meant by type_info?

Used to hold the type information returned by the static_cast

Used to hold the type information returned by the dynamic_cast

Used to hold the type information returned by the typeid operator

Used to hold the type information returned by the static_id

25 / 50

Pick out the wrong header file about strings.

<regex>

<reg>

<ios>

26 / 50

Which concept of OOPs is shown by Virtual Functions?

Inheritance

Polymorphism

Encapsulation

Abstraction

27 / 50

What is the use of clog?

Standard logging stream

output stream

Input stream

Error stream

28 / 50

How can object be allocated outside the object lifetime?

char$

void*

int

float

29 / 50

What is a virtual function in C++?

Any member function of a class

All functions that are derived from the base class

All the members that are accessing base class data members

All the functions which are declared in the base class and is re-defined/overridden by the derived class

30 / 50

Which statement is incorrect about virtual function.

They are used to hide objects

They are used to achieve runtime polymorphism

All of the mentioned

Each virtual function declaration starts with the virtual keyword

31 / 50

What is meant by multiple inheritance?

Deriving a base class from derived class

Deriving a derived class from more than one base class

Deriving a derived base class

Deriving a derived class from base class

32 / 50

The concept of deciding which function to invoke during runtime is called ______________________

static binding

both late binding and dynamic linkage

late binding

dynamic linkage

33 / 50

Which is referred by pointers to member?

Referring to whole class

Static members of class objects

Dynamic members of class objects

Non-static members of class objects

34 / 50

Which is the correct syntax of declaring a virtual function?

virtual int func(){};

inline virtual func(){};

virtual int func();

inline virtual func();

35 / 50

Which operator is used to create the user-defined streams in c++?

Both >> & <<

36 / 50

Which is used to allocate and deallocate storage for objects during the execution?

Queue

Stack

Heap

Freestore

37 / 50

Pick out parameter for rehash method in unordered_set in c++?

type

size

hash

count

38 / 50

What is the order of Destructors call when the object of derived class B is declared, provided class B is derived from class A?

Destructor of A followed by B

Destructor of B only

Destructor of B followed by A

Destructor of A only

39 / 50

How many types of guarantees are there in exception class can have?

40 / 50

What does the cerr represent?

Standard logging stream

Standard error stream

Output stream

Input stream

41 / 50

Pick out the wrong header file.

42 / 50

What is Inheritance in C++?

Deriving new classes from existing classes

Wrapping of data into a single class

Classes with same names

Overloading of classes

43 / 50

What is a pure virtual function?

A virtual function that has no definition relative to the base class

Any function that is made virtual

A virtual function defined inside the base class

A virtual function that is defined inside the derived class

44 / 50

What is meant by vector in the container library contains?

It manages the length and size

It is a sequence container that encapsulates static size arrays

It is a sequence container that encapsulates dynamic size arrays

It manages the memory

45 / 50

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

Dynamic binding

Polymorphism

Constructor

Both Dynamic binding & Polymorphism

46 / 50

Which operator is used in pointer to member function?

->*

Both .* & ->*

47 / 50

Which classes are called as mixin?

Represent a secondary design

Standard logging stream

Classes express functionality which represents responsibilities

Represent a priary design

48 / 50

At which time does the static_cast can be applied?

Runtime construct

Compile-time construct

Both Compile-time & Runtime construct

Runtime deconstruct

49 / 50

What is the importance of mutable keyword?

It will not allow the data member to change within a const member function

It allows the data member to change within a const member function

It allows the data member to change outside a const member function

It will copy the values of the variable

50 / 50

Which access specifier is used where one wants data members to be accessed by other classes but not from outside objects?

protected

public

private

both protected and public

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