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Total Questions: 20

1. Which of the members are referred by this pointer usually (Java)?

A. Members of class where this is used

B. Member of the parent class where this is used

C. Members that are passed as argument to the object

D. Pointers are not applicable in java

Correct Answer is : Members of class where this is used

2. How to refer to method of nested class?

A. enclosingClassObject.innerClassObject.method();

B. innerClassObject.method();

C. method();

D. depends on where the method is being called

Correct Answer is : depends on where the method is being called

3. How many objects can be referenced from same variables?

A. One at a time

B. Many at a time

C. Many using array name

D. 7 at max at same time

Correct Answer is : One at a time

4. Java handles memory dynamically and references are deleted as soon as they are out of scope.

A. TRUE

B. FALSE

Correct Answer is : TRUE

5. Which among the following is true?

A. Object referencing refers to methods address

B. Object referencing refers to variable of object

C. Object referencing points to same address, if assigned by variables

D. Object referencing is used to point methods

Correct Answer is : Object referencing points to same address, if assigned by variables

6. Invoking a method on a particular object is ____________ sending a message to that object.

A. Different from

B. Same as

C. Somewhat similar

D. Part of

Correct Answer is : Same as

7. Can reference to an object be returned from a method?

A. Yes, always possible

B. Yes, but not always

C. No, never possible

D. No, Not possible because referred element would be destroyed

Correct Answer is : Yes, but not always

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

A. To create instance of a function

B. To create instance of a program

C. To create instance of class

D. To create instance of structures

Correct Answer is : To create instance of class

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

A. To create instance of a function

B. To create instance of a program

C. To create instance of class

D. To create instance of structures

Correct Answer is : To create instance of class

10. Which among the following is not a property of an object?

A. Identity

B. Properties

C. Attributes

D. Names

Correct Answer is : Names

11. Which among the following is not a property of an object?

A. Identity

B. Properties

C. Attributes

D. Names

Correct Answer is : Names

12. What is function object?

A. An object with a single function

B. An object with only functions

C. An object with more than one function

D. An object with no functions

Correct Answer is : An object with a single function

13. What is function object?

A. An object with a single function

B. An object with only functions

C. An object with more than one function

D. An object with no functions

Correct Answer is : An object with a single function

14. Immutable object are used ______________________

A. To set up as a fixed state

B. To set up variable object

C. To set up an object of abstract class

D. To set up an object of derived class

Correct Answer is : To set up as a fixed state

15. Immutable object are used ______________________

A. To set up as a fixed state

B. To set up variable object

C. To set up an object of abstract class

D. To set up an object of derived class

Correct Answer is : To set up as a fixed state

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

A. First class object

B. Derived class object

C. Container object

D. Enclosure object

Correct Answer is : Container object

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

A. First class object

B. Derived class object

C. Container object

D. Enclosure object

Correct Answer is : Container object

18. What are singleton objects?

A. The only two objects of a class throughout the program

B. The only object of a class throughout the program

C. The objects that are alive throughout the program

D. The objects that are created and then deleted without use

Correct Answer is : The only object of a class throughout the program

19. What are singleton objects?

A. The only two objects of a class throughout the program

B. The only object of a class throughout the program

C. The objects that are alive throughout the program

D. The objects that are created and then deleted without use

Correct Answer is : The only object of a class throughout the program

20. Object cout and cin _________________

A. Can be used directly with << and >> symbols respectively

B. Can be used directly with >> and << symbols respectively

C. Must be used as a function which accepts 2 arguments

D. Must be used as a function which accepts 3 arguments

Correct Answer is : Can be used directly with << and >> symbols respectively