Object Oriented Programming Practice Test 4

1. Which feature of OOP reduces the use of nested classes?

Inheritance

Encapsulation

Abstraction

Binding

2. Which among the following keyword can be used to free the allocated memory for an object?

delete

either delete or free

only delete

free

3. If an object is passed by address, will be constructor be called?

No, temporary object is created

Yes, to initialize the members

Yes, to allocate the memory

No, values are copied

4. Objects type ____________________

Can be changed in runtime

Can be changed in compile time

May or may not get changed

Can’t be changed in runtime

5. Which object can be used to access the standard input?

System.inner

System.stdin

console.input

cin

6. Does use of object reference in assignment or passing means copy of the object is being used?

No, because the copy would not help to make changes to main object

Yes, because the reference directly means using address

Yes, because the reference directly means the constructors are involved

No, because the copy would create a new temporary variable

7. Which among the following is the main use of object?

To create instance of a function

To create instance of class

To create instance of structures

To create instance of a program

8. What are singleton objects?

The only two objects of a class throughout the program

The objects that are created and then deleted without use

The objects that are alive throughout the program

The only object of a class throughout the program

9. When is the memory allocated for an object?

When object constructor is called

When object is initialized to another object

At declaration of object

At compile time

10. Which object can be used to contain other objects?

Derived class object

Enclosure object

Container object

First class object