CS304 Midterm Online Quiz

CS304-Midterm

1 / 50

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

New operator

Constructor of the class

Delete operator

Destructor of the class

2 / 50

Which operator can not be overloaded?

Script operator ( [] )

Assignment operator ( = )

The relation operator ( >= )

Conditional operator (? : )

3 / 50

What is true about function templates?

The compiler can only generate copy for the int type data

None of the given

The compiler generates only one copy of the function template

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

4 / 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+(double& obj);

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

Rational_number operator+( Rational_number & obj);

5 / 50

The >= operator can be overloaded

TRUE

FALSE

6 / 50

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

None of given

Primitive variables

Static variables

Instance variable

7 / 50

A C++ class is similar to --------------------

Library File

Header File

Structure

None of the given

8 / 50

Which part of an object exhibits its state?

Any public part

Any private part

Data

Operations

9 / 50

Which of the following are an advantage of OOP?

It provides an ability to create one user defined data type by extending the other

All of the given options

OOP makes it easy to re-use the code

It provides the facility of defining Abstract data types through which real world entities can be defined better

10 / 50

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

InstantiatedC++ How to Program, Fifth Edition

Define

Declared

Called

11 / 50

________ is/are used to access information hidden within an object?

Private member functions

Interface

Private data members

Both public and private members

12 / 50

A class can be identified from a statement by -------------

Noun

Pronoun

Adverb

Verb

13 / 50

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

Polymarphism

Abstraction

Encapsulation

Inheritance

14 / 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 a re-design of the hierarchy with changing the Operating System to a field rather than

Give the goahead for further design using the current scheme

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

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

15 / 50

To convert from a user-defined class to a basic type, you would most likely use

a built-in conversion operator

a one-argument constructor

a conversion operator that’s a member of the class

an overloaded = operator

16 / 50

Which operator can not be overloaded?

The relation operator ( >= )

Script operator ( [] )

Conditional operator (? : )

Assignment operator ( = )

17 / 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?

2, 4

1,2,3,4

1, 2, 3

1,3,5

18 / 50

A static member function cannot be declared

Explicit

Implicit

Virtual

Static

19 / 50

The concept of derived classes is involved in,

encapsulation

inheritance

array

structure

20 / 50

this pointers are not accessible for static member functions

FALSE

TRUE

21 / 50

Friend functions are _____________ functions of a class

data member

None of given

non-member

object member

22 / 50

Which one of the following is not an object association?

Aggregation

Composition

Simple Assocation

Inheritance

23 / 50

A static member function cannot be declared

Static

Implicit

Explicit

Virtual

24 / 50

this pointers are not accessible for static member functions

TRUE

FALSE

25 / 50

Which one is not keyword in C++?

B_op

const

operator

None of given

26 / 50

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

Composition

Separation

Aggregation

None of the given

27 / 50

For classes with common behavior, you can save effort by placing the common behavior in a __________

Base class

Named class

Derived Class

Deprived Class

28 / 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

take two arguments

take four arguments

return a value

create a named temporary object

29 / 50

We can get only one unique value which can be used by all the objects of that class by the use of,

dynamic variables

data members

static variables

instance variables

30 / 50

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

Adopt

Utilize

Borrow

Inherit

31 / 50

Which of the following may not be an integral part of an object?

Protected data members

All of given

Behavior

State

32 / 50

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

FALSE

TRUE

33 / 50

Which is not the Advantage of inheritance?

facilitating class libraries

avoiding the rewriting of code.

providing class growth through natural selection

providing a useful conceptual framework.

34 / 50

What a derived class can add?

New member functions and New friend functions

All of given

New data members

New constructors and destructor

35 / 50

Rational_number operator+(double& obj);

operator+(double& obj);

Rational_number operator+( Rational_number & obj);

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

36 / 50

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

Double

Chracter

Integer

37 / 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?

Overloading

Encapsulation

Templates

Data hiding

38 / 50

Static variable can be initialized more than once

FALSE

TRUE

39 / 50

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

Encapsulation

Polymorphism

Inheritance

Data hiding

40 / 50

What problem(s) may occur when we copy objects without using deep copy constructor?

System crash

All of the given

Dangling pointer

Memory Leakage

41 / 50

_______ is a relationship

abstraction

Polymarphism

Inheritance

encapsulation

42 / 50

An overloaded operator always requires one less argument than its number of operands

FALSE

TRUE

43 / 50

A static member function cannot be declared

Implicit

Virtual

Explicit

44 / 50

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

FALSE

TRUE

45 / 50

The find() algorithm

takes iterators as its first two arguments.

takes container elements as its first two arguments

finds matching sequences of elements in two containers

finds a container that matches a specified container

46 / 50

this pointers are not accessible for static member functions

FALSE

TRUE

47 / 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

48 / 50

In OOP a class is an example of _____

Abstract Type

None of the given

User Defined Type

Data Type

49 / 50

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

Encapsulation

Abstraction

both encapsulation and information hiding

Information Hiding

50 / 50

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

Have different copies of this variable

Can not access this variable

Have same copy of this variable

None of given

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