Object Oriented Programming Mock Test 2

10%

Question 1 of 10

1. Copy constructor is a constructor which ________________

Creates an object by copying values from any other object of same class

Creates an object by copying values from another object of another class

Creates an object by initializing it with another previously created object of same class

Creates an object by copying values from first object created for that class

Question 1 of 10

Question 2 of 10

2. Default constructor must be defined, if parameterized constructor is defined and the object is to be created without arguments.

False

True

Question 2 of 10

Question 3 of 10

3. In multiple inheritance, if class C inherits two classes A and B as follows, which class constructor will be called first?

class A{ };
class B{ };
class C: public A, public B{  };

Can’t be determined

C()

B()

A()

Question 3 of 10

Question 4 of 10

4. Which among the following is not a level of abstraction?

Physical level

External level

Logical level

View level

Question 4 of 10

Question 5 of 10

5. It’s necessary to pass object by reference in copy constructor because ____________

It passes the address of new constructor to be created

Constructor is not called in pass by reference

It passes the address of new object to be created

Constructor is called in pass by reference only

Question 5 of 10

Question 6 of 10

6. Which among the following can restrict class members to get inherited?

Public

Private

All three

Protected

Question 6 of 10

Question 7 of 10

7. Which among the following is true for copy constructor?

Used when an object is passed by value to a function

It can be defined with zero arguments

Used when a function returns an object

The argument object is passed by reference

Question 7 of 10

Question 8 of 10

8. When and how many times a static constructor is called?

Created at time of object destruction

Called at first time when an object is created and only one time

Called whenever an object go out of scope

Called at first time when an object is created and called with every new object creation

Question 8 of 10

Question 9 of 10

9. For explicit call _________________

The destructor must be public

The destructor must be defined outside the class

The destructor must be private

The destructor must be protected

Question 9 of 10

Question 10 of 10

10. Which among the following is true?

First the constructor of child classes are called in the sequence of inheritance

First the constructor of parent classes are called in sequence of inheritance

First constructor called is of the object being created

Constructors are called randomly

Question 10 of 10