CS304 Midterm Online Quiz

CS304-Midterm

1 / 50

Assume a class Derv that is privately derived from class Base. An object of class Derv located in main() can access

private members of Derv

protected members of Derv

public members of Derv.

protected members of Base

2 / 50

Static variable can be initialized more than once

FALSE

TRUE

3 / 50

Static variable can be initialized more than once.

FALSE

TRUE

4 / 50

C++ compiler does not allow to dynamically allocate memory for objects

TRUE

FALSE

5 / 50

Using encapsulation we can achieve

Implementation independence

All of given options

Least interdependencies among modules

Information hiding

6 / 50

this pointers are not accessible for static member functions

FALSE

TRUE

7 / 50

A member function having the same name as that of a class and a ~ sign with it is called,

Setter

Constructor

Destructor

Getter

8 / 50

Which operator can not be overloaded?

The relation operator ( >= )

Conditional operator (? : )

Assignment operator ( = )

Script operator ( [] )

9 / 50

A generic class showing all the common attributes and a behavior of other classes represents a very important feature in oop called --------

Encapsulation

Polymarphism

Inheritance

Abstraction

10 / 50

Which of the following is not an example of multiple inheritances?----------

Mermaid

None of the given

Woman

Amphibious Vehicle

11 / 50

Identify which of the following overloaded operator function’s declaration is appropriate for the given call? Rational_number_1 + 2.325 Where Rational_number_1 is an object of user defined class Rational_number

operator+(double& obj);

Rational_number operator+( Rational_number & obj);

Rational_number operator+(Rational_number &obj, double& num);

Rational_number operator+(double& obj);

12 / 50

Inheritance is a way to - Please choose one

providing class growth through natural selection

improve data hiding and encapsulation

pass arguments to objects of classes

make general classes into more specific classes.

13 / 50

_______ remain in memory even when all objects of a class have been destroyed

None of given

Instance variable

Static variables

Primitive variables

14 / 50

When a variable is define as static in a class then all object of this class,

Have same copy of this variable

Have different copies of this variable

Can not access this variable

None of given

15 / 50

The return type of a constructor is of -------------

Double

Integer

Chracter

16 / 50

Consider the code below, class Fred { public: Fred(); ... }; int main() { Fred a[10]; Fred* p = new Fred[10]; ... } Select the best option,

Produce an error

Fred a[10]; calls the default constructor 11 times Fred* p = new Fred[10]; calls the default constructor 11 times

Fred a[10]; calls the default constructor 09 times Fred* p = new Fred[10]; calls the default constructor 10 times

Fred a[10]; calls the default constructor 10 times Fred* p = new Fred[10]; calls the default constructor 10 times

17 / 50

Given the following class class Base{ int Age=33; } How you can improve above class with respect to accessing the field Age?

Define the variable Age as protected and create a set method that returns it and a get method that updates it

Define the variable Age as private

Define the variable Age as protected

Define the variable Age as private and create a get method that returns it and a set method that updates it

18 / 50

In object orientated programming, a class of objects cans _____________ properties from another class of objects

Borrow

Adopt

Utilize

Inherit

19 / 50

The process of hiding unwanted details from users is called __________

Protection

Encapsulation

Abstraction

Argumentation

20 / 50

Suppose there is an object of type Person, which of the following can be considered as one of its attributes

Age

Both Name and Age

Work()

Name

21 / 50

__________ satisfy the condition of polymorphism

all of the given

Diamond

Carbon

Coal

22 / 50

Friend class and friend function can be used as an alternate to each other

FALSE

TRUE

23 / 50

The compiler won’t object if you overload the * operator to perform division

FALSE

TRUE

24 / 50

Rational_number operator+( Rational_number & obj);

operator+(double& obj);

Rational_number operator+(Rational_number &obj, double& num);

Rational_number operator+(double& obj);

25 / 50

a’A static member function can be called, even when a class is not __________

Declared

Called

Define

InstantiatedC++ How to Program, Fifth Edition

26 / 50

What is true about function templates?

None of the given

The compiler generates a copy of function respective to each type of data

The compiler generates only one copy of the function template

The compiler can only generate copy for the int type data

27 / 50

The technique in which we visualize our programming problems according to real life’s problems is called ----------------

structured programming

non of the given

procedural programming

object oriented Programming

28 / 50

An employee working in an organization has 1.Name 2.Past experience 3.Age 4.Relatives 5.Hobbies in spare times Keeping in view the principle of abstraction, which of the above information the company needs to save as employee’s record?

1, 2, 3

2, 4

1,2,3,4

1,3,5

29 / 50

this pointers are not accessible for static member functions

FALSE

TRUE

30 / 50

We achieve independence of internal implementation from its external interface through-----------

Abstraction

Encapsulation

Information Hiding

both encapsulation and information hiding

31 / 50

Assume a class C with objects obj1, obj2, and obj3. For the statement obj3 = obj1 - obj2 to work correctly, if the overloaded - operator must

create a named temporary object

take two arguments

take four arguments

return a value

32 / 50

In order to define a class template, the first line of definition must be:

typename <template T>

Class <Template T>

Template Class <ClassName>

template <typename T>

33 / 50

___________, which means if A declares B as its friend it does NOT mean that A can access private data of B. It only means that B can access all data of A

NO Friendship between classes

Friendship is two way only

Any kind of friendship

Friendship is one way only

34 / 50

Your chief Software designer has shown you a sketch of the new Computer parts system she is about to create. At the top of the hierarchy is a Class called Computer and under this are two child classes. One is called LinuxPC and one is called WindowsPC. The main difference between the two is that one runs the Linux operating System and the other runs the Windows System (of course another difference is that one needs constant re-booting and the other runs reliably). Under the WindowsPC are two Sub classes one called Server and one Called Workstation. How might you appraise your designers work?

Ask for the option of WindowsPC to be removed as it will soon be obsolete

Ask for a re-design of the hierarchy with changing the Operating System to a field rather than

Change the hierarchy to remove the need for the superfluous Computer Class

Give the goahead for further design using the current scheme

35 / 50

Which operator can not be overloaded?

Assignment operator ( = )

Conditional operator (? : )

The relation operator ( >= )

Script operator ( [] )

36 / 50

The statement objA=objB; will cause a compiler error if the objects are of different classes

TRUE

FALSE

37 / 50

Suppose you have been given the following design, "A person has a name, age, address and sex. You are designing a class to represent a type of person called a patient. This kind of person may be given a diagnosis, have a spouse and may be alive". Given that the person class has already been created, what of the following would be appropriate to include when you design the patient class?

registration date and diagnosis

diagnosis and age

age and sex

sex and diagnosis

38 / 50

Classes like TwoDimensionalShape and ThreeDimensionalShape would normally be concrete, while classes like Sphere and Cube would normally be abstract

TRUE

FALSE

39 / 50

In order to free the memory occupied by the object, we use -------------

Shallow Copy

Deep Copy

Constructor

Destructor

40 / 50

A non-virtual member function is defined in a base class and overridden in a derived class; if that function is called through a base-class pointer to a derived class object, the derived-class version is used

TRUE

FALSE

41 / 50

this pointers are not accessible for static member functions

TRUE

FALSE

42 / 50

Which of the following is the best approach if it is required to have more than one functions having exactly same functionality and implemented on different data types?

Templates

Encapsulation

Data hiding

Overloading

43 / 50

Which operator can not be overloaded?

Assignment operator ( = )

The relation operator ( >= )

Script operator ( [] )

Conditional operator (? : )

44 / 50

In OOP a class is an example of _____

Abstract Type

User Defined Type

None of the given

Data Type

45 / 50

What a derived class can add?

All of given

New data members

New constructors and destructor

New member functions and New friend functions

46 / 50

A template provides a convenient way to make a family of

functions and classes

programs and algorithms

classes and exceptions

variables and data members

47 / 50

Which construct is the source for the creation of an object?

Constructor of the class

New operator

Destructor of the class

Delete operator

48 / 50

Which one of the following features of OOP is used to derive a class from another?

Encapsulation

Polymorphism

Data hiding

Inheritance

49 / 50

The life of sub object is not dependant on the life of master class in ___________

None of the given

Composition

Aggregation

Separation

50 / 50

A static member function cannot be declared

Implicit

Explicit

Virtual

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